{"id":2256,"date":"2026-08-06T01:39:26","date_gmt":"2026-08-06T01:39:26","guid":{"rendered":"https:\/\/onpowbutton.com\/news\/\/"},"modified":"2026-08-06T01:39:26","modified_gmt":"2026-08-06T01:39:26","slug":"normally-open-switch-vs-normally-closed-switch","status":"publish","type":"post","link":"https:\/\/onpowbutton.com\/ar\/news\/normally-open-switch-vs-normally-closed-switch\/","title":{"rendered":"\u0623\u064a\u0647\u0645\u0627 \u0623\u0643\u062b\u0631 \u0623\u0645\u0627\u0646\u064b\u0627\u060c \u0627\u0644\u0645\u0641\u062a\u0648\u062d \u0639\u0627\u062f\u0629\u064b (NO) \u0623\u0645 \u0627\u0644\u0645\u063a\u0644\u0642 \u0639\u0627\u062f\u0629\u064b (NC)\u061f"},"content":{"rendered":"<p>\u0639\u0646\u062f \u0627\u062e\u062a\u064a\u0627\u0631 \u0645\u0641\u062a\u0627\u062d \u0628\u0648\u0645\u0628\u064a\u0647 (\u0632\u0631 \u0636\u063a\u0637)\u060c \u0623\u0648 \u0645\u0641\u062a\u0627\u062d \u0646\u0647\u0627\u064a\u0629 \u0627\u0644\u0633\u0641\u0631\u060c \u0623\u0648 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href=\"https:\/\/onpowbutton.com\/ar\/products\/\">\u0645\u0641\u0627\u062a\u064a\u062d \u0645\u0641\u062a\u0648\u062d\u0629 \u0639\u0627\u062f\u0629 \u0648\u0645\u0641\u0627\u062a\u064a\u062d \u0645\u063a\u0644\u0642\u0629 \u0639\u0627\u062f\u0629<\/a> \u0639\u0645\u0644.<\/p>\n<p><!-- \u56fe\u72471 --><img decoding=\"async\" src=\"https:\/\/onpowbutton.com\/wp-content\/uploads\/2026\/07\/outdoor-equipment-control-panel-waterproof-push-button.webp\" alt=\"Industrial waterproof push button control panel\" \/><\/p>\n<hr \/>\n<h2>\u0645\u0627 \u0647\u0648 \u0627\u0644\u0645\u0641\u062a\u0627\u062d \u0627\u0644\u0645\u0641\u062a\u0648\u062d \u0639\u0627\u062f\u0629\u064b\u061f<\/h2>\n<p>A <a href=\"https:\/\/onpowbutton.com\/ar\/metal-push-button-switch\/\">\u0645\u0641\u062a\u0627\u062d \u0645\u0641\u062a\u0648\u062d \u0639\u0627\u062f\u0629\u064b<\/a> (\u0645\u0641\u062a\u0627\u062d \u0645\u0641\u062a\u0648\u062d \u0639\u0627\u062f\u0629\u064b) \u062a\u0643\u0648\u0646 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\u0623\u0643\u062b\u0631 \u0623\u0645\u0627\u0646\u0627\u064b.<\/p>\n<p>\u0627\u0644\u0633\u0628\u0628 \u0627\u0644\u0631\u0626\u064a\u0633\u064a \u0647\u0648 \u0623\u0646 \u062f\u0627\u0626\u0631\u0629 NC \u064a\u0645\u0643\u0646 \u0623\u0646 \u062a\u0633\u0627\u0639\u062f \u0641\u064a \u0627\u0643\u062a\u0634\u0627\u0641 \u0623\u0639\u0637\u0627\u0644 \u0645\u0639\u064a\u0646\u0629 \u0642\u062f \u062a\u0638\u0644 \u0645\u062e\u0641\u064a\u0629 \u0644\u0648\u0644\u0627 \u0630\u0644\u0643.<\/p>\n<p>\u0639\u0644\u0649 \u0633\u0628\u064a\u0644 \u0627\u0644\u0645\u062b\u0627\u0644\u060c \u062a\u062e\u064a\u0644 \u0623\u0646 \u0633\u0644\u0643\u0627\u064b \u0627\u0646\u0642\u0637\u0639 \u0641\u064a \u062f\u0627\u0626\u0631\u0629 \u0623\u0645\u0627\u0646:<\/p>\n<ul>\n<li>\u0641\u064a \u062f\u0627\u0626\u0631\u0629 \u0627\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u0639\u0627\u062f\u064a (NC)\u060c \u064a\u0624\u062f\u064a \u0627\u0644\u0633\u0644\u0643 \u0627\u0644\u0645\u0642\u0637\u0648\u0639 \u0625\u0644\u0649 \u0641\u062a\u062d \u0627\u0644\u062f\u0627\u0626\u0631\u0629 \u0648\u064a\u0645\u0643\u0646 \u0623\u0646 \u064a\u0637\u0644\u0642 \u0627\u0633\u062a\u062c\u0627\u0628\u0629 \u062a\u0648\u0642\u0641 \u0623\u0648 \u0639\u0637\u0644.<\/li>\n<li>\u0641\u064a \u062f\u0627\u0626\u0631\u0629 \u0645\u0646 \u0646\u0648\u0639 \"\u0645\u0641\u062a\u0648\u062d\u0629 \u0639\u0627\u062f\u0629\" (NO)\u060c \u062a\u0643\u0648\u0646 \u0627\u0644\u062f\u0627\u0626\u0631\u0629 \u0645\u0641\u062a\u0648\u062d\u0629 \u0628\u0627\u0644\u0641\u0639\u0644 \u0623\u062b\u0646\u0627\u0621 \u0627\u0644\u062a\u0634\u063a\u064a\u0644 \u0627\u0644\u0639\u0627\u062f\u064a\u060c \u0644\u0630\u0627 \u0642\u062f \u0644\u0627 \u064a\u062a\u0645 \u0627\u0643\u062a\u0634\u0627\u0641 \u0627\u0644\u0633\u0644\u0643 \u0627\u0644\u0645\u0642\u0637\u0648\u0639 \u0639\u0644\u0649 \u0627\u0644\u0641\u0648\u0631.<\/li>\n<\/ul>\n<p>\u0644\u0647\u0630\u0627 \u0627\u0644\u0633\u0628\u0628 \u062a\u064f\u0633\u062a\u062e\u062f\u0645 \u0646\u0642\u0627\u0637 \u0627\u0644\u062a\u0648\u0635\u06cc\u0644 \u0627\u0644\u0645\u063a\u0644\u0642\u0629 \u0639\u0627\u062f\u0629\u064b \u0641\u064a \u062f\u0648\u0627\u0626\u0631 \u0627\u0644\u0625\u064a\u0642\u0627\u0641 \u0627\u0644\u0637\u0627\u0631\u0626 \u0648\u0623\u0646\u0638\u0645\u0629 \u0627\u0644\u062a\u062d\u0643\u0645 \u0627\u0644\u0623\u062e\u0631\u0649 \u0627\u0644\u0645\u062a\u0639\u0644\u0642\u0629 \u0628\u0627\u0644\u0633\u0644\u0627\u0645\u0629.<\/p>\n<p>\u0648\u0645\u0639 \u0630\u0644\u0643\u060c \u0647\u0630\u0627 \u0644\u0627 \u064a\u0639\u0646\u064a \u0623\u0646 \u0643\u0644 \u0645\u0641\u062a\u0627\u062d \u0645\u063a\u0644\u0642 \u0639\u0627\u062f\u0629\u064b (NC) \u0622\u0645\u0646 \u062a\u0644\u0642\u0627\u0626\u064a\u0627\u064b \u0623\u0648 \u0623\u0646 \u0623\u064a \u0645\u0641\u062a\u0627\u062d \u0645\u0641\u062a\u0648\u062d \u0639\u0627\u062f\u0629\u064b (NO) \u063a\u064a\u0631 \u0622\u0645\u0646.<\/p>\n<p>\u062a\u0639\u062a\u0645\u062f \u0633\u0644\u0627\u0645\u0629 \u0623\u064a \u0646\u0638\u0627\u0645 \u0639\u0644\u0649 \u0639\u062f\u0629 \u0639\u0648\u0627\u0645\u0644\u060c \u0645\u0646\u0647\u0627:<\/p>\n<ul>\n<li>\u0648\u0638\u064a\u0641\u0629 \u0627\u0644\u062f\u0627\u0626\u0631\u0629<\/li>\n<li>\u062a\u0635\u0645\u064a\u0645 \u0646\u0638\u0627\u0645 \u0627\u0644\u062a\u062d\u0643\u0645<\/li>\n<li>\u0645\u0633\u062a\u0648\u0649 \u0627\u0644\u0623\u0645\u0627\u0646 \u0627\u0644\u0645\u0637\u0644\u0648\u0628<\/li>\n<li>\u0637\u0631\u064a\u0642\u0629 \u0627\u0644\u062a\u0648\u0635\u064a\u0644<\/li>\n<li>\u0646\u0648\u0639 \u0627\u0644\u0645\u0641\u062a\u0627\u062d<\/li>\n<li>\u0628\u064a\u0626\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/li>\n<li>\u0645\u0639\u0627\u064a\u064a\u0631 \u0627\u0644\u0633\u0644\u0627\u0645\u0629 \u0630\u0627\u062a \u0627\u0644\u0635\u0644\u0629<\/li>\n<\/ul>\n<p>\u0646\u0648\u0639 \u062c\u0647\u0629 \u0627\u0644\u0627\u062a\u0635\u0627\u0644 \u0647\u0648 \u062c\u0632\u0621 \u0648\u0627\u062d\u062f \u0641\u0642\u0637 \u0645\u0646 \u062a\u0635\u0645\u064a\u0645 \u0627\u0644\u0633\u0644\u0627\u0645\u0629 \u0627\u0644\u0634\u0627\u0645\u0644.<\/p>\n<hr \/>\n<h2>\u0644\u0645\u0627\u0630\u0627 \u062a\u064f\u0633\u062a\u062e\u062f\u0645 \u0646\u0642\u0627\u0637 \u0627\u0644\u0627\u062a\u0635\u0627\u0644 \u0627\u0644\u0645\u063a\u0644\u0642\u0629 \u0639\u0627\u062f\u0629\u064b \u0641\u064a \u062f\u0648\u0627\u0626\u0631 \u0627\u0644\u0625\u064a\u0642\u0627\u0641 \u0627\u0644\u0637\u0627\u0631\u0626\u061f<\/h2>\n<p>\u0623\u0646\u0638\u0645\u0629 \u0627\u0644\u0625\u064a\u0642\u0627\u0641 \u0627\u0644\u0637\u0627\u0631\u0626 \u0645\u0635\u0645\u0645\u0629 \u0644\u0625\u064a\u0642\u0627\u0641 \u0627\u0644\u0622\u0644\u0629 \u0623\u0648 \u062a\u0642\u0644\u064a\u0644 \u0627\u0644\u062d\u0631\u0643\u0629 \u0627\u0644\u062e\u0637\u0631\u0629 \u0639\u0646\u062f \u062d\u062f\u0648\u062b \u0637\u0627\u0631\u0626.<\/p>\n<p>\u0645\u0644\u0627\u0645\u0633 \u0645\u063a\u0644\u0642 \u0639\u0627\u062f\u0629\u064b (NC) \u0645\u0641\u064a\u062f \u0644\u0623\u0646 \u062f\u0627\u0626\u0631\u0629 \u0627\u0644\u0623\u0645\u0627\u0646 \u062a\u0638\u0644 \u0645\u063a\u0644\u0642\u0629 \u0623\u062b\u0646\u0627\u0621 \u0627\u0644\u062a\u0634\u063a\u064a\u0644 \u0627\u0644\u0639\u0627\u062f\u064a. \u0648\u0625\u0630\u0627 \u062a\u0645 \u0627\u0644\u0636\u063a\u0637 \u0639\u0644\u0649 \u0632\u0631 \u0627\u0644\u0625\u064a\u0642\u0627\u0641 \u0627\u0644\u0637\u0627\u0631\u0626\u060c \u064a\u0646\u0641\u062a\u062d \u0627\u0644\u0645\u0644\u0627\u0645\u0633 \u0648\u064a\u0642\u0627\u0637\u0639 \u0627\u0644\u062f\u0627\u0626\u0631\u0629.<\/p>\n<p>\u0642\u062f \u064a\u0633\u062a\u062c\u064a\u0628 \u062a\u0635\u0645\u064a\u0645 \u0627\u0644\u062a\u062d\u0643\u0645 \u0627\u0644\u0639\u062f\u062f\u064a (NC) \u0623\u064a\u0636\u0627\u064b \u0644\u0645\u0634\u0643\u0644\u0627\u062a \u062a\u0648\u0635\u064a\u0644 \u0645\u0639\u064a\u0646\u0629.<\/p>\n<p>\u0639\u0644\u0649 \u0633\u0628\u064a\u0644 \u0627\u0644\u0645\u062b\u0627\u0644\u060c \u0625\u0630\u0627 \u0623\u0635\u0628\u062d \u0627\u0644\u0633\u0644\u0643 \u0645\u0641\u0643\u0643\u0627\u064b \u0623\u0648 \u0627\u0646\u0642\u0637\u0639:<\/p>\n<ol>\n<li>\u062a\u0646\u0641\u062a\u062d \u0627\u0644\u062f\u0627\u0626\u0631\u0629.<\/li>\n<li>\u0646\u0638\u0627\u0645 \u0627\u0644\u062a\u062d\u0643\u0645 \u064a\u0643\u062a\u0634\u0641 \u0627\u0644\u0627\u0646\u0642\u0637\u0627\u0639.<\/li>\n<li>\u0642\u062f \u062a\u062a\u0648\u0642\u0641 \u0627\u0644\u0622\u0644\u0629 \u0623\u0648 \u062a\u062f\u062e\u0644 \u0641\u064a \u0648\u0636\u0639 \u0622\u0645\u0646.<\/li>\n<\/ol>\n<p>\u063a\u0627\u0644\u0628\u0627\u064b \u0645\u0627 \u064a\u064f\u0637\u0644\u0642 \u0639\u0644\u0649 \u0647\u0630\u0627 \u0627\u0644\u0645\u0628\u062f\u0623 \u0627\u0633\u0645 \u0627\u0644\u062a\u0634\u063a\u064a\u0644 \u0627\u0644\u0641\u0627\u0634\u0644 \u0628\u0623\u0645\u0627\u0646.<\/p>\n<p>\u064a\u0647\u062f\u0641 \u0627\u0644\u062a\u0635\u0645\u064a\u0645 \u0627\u0644\u0622\u0645\u0646 \u0645\u0646 \u0627\u0644\u0623\u0639\u0637\u0627\u0644 \u0625\u0644\u0649 \u062a\u0648\u062c\u064a\u0647 \u0627\u0644\u0646\u0638\u0627\u0645 \u0646\u062d\u0648 \u062d\u0627\u0644\u0629 \u0623\u0643\u062b\u0631 \u0623\u0645\u0627\u0646\u0627\u064b \u0639\u0646\u062f \u062d\u062f\u0648\u062b \u0639\u0637\u0644\u060c \u0628\u062f\u0644\u0627\u064b \u0645\u0646 \u0627\u0644\u0633\u0645\u0627\u062d \u0644\u0644\u0622\u0644\u0629 \u0628\u0645\u0648\u0627\u0635\u0644\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644 \u062f\u0648\u0646 \u0627\u0643\u062a\u0634\u0627\u0641 \u0627\u0644\u0645\u0634\u0643\u0644\u0629.<\/p>\n<p>\u0645\u0639 \u0630\u0644\u0643\u060c \u064a\u0639\u062a\u0645\u062f \u0627\u0644\u0633\u0644\u0648\u0643 \u0627\u0644\u062f\u0642\u064a\u0642 \u0639\u0644\u0649 \u0646\u0638\u0627\u0645 \u0627\u0644\u062a\u062d\u0643\u0645 \u0648\u0643\u064a\u0641\u064a\u0629 \u062a\u0635\u0645\u064a\u0645 \u062f\u0627\u0626\u0631\u0629 \u0627\u0644\u0623\u0645\u0627\u0646.<\/p>\n<p><!-- \u56fe\u72472 --><img decoding=\"async\" src=\"https:\/\/onpowbutton.com\/wp-content\/uploads\/2026\/07\/emergency-stop-push-button-switches.webp\" alt=\"Emergency stop push button switches\" \/><\/p>\n<hr \/>\n<h2>\u0645\u062a\u0649 \u064a\u062c\u0628 \u0639\u0644\u064a\u0643 \u0627\u062e\u062a\u064a\u0627\u0631 \u0645\u0641\u062a\u0627\u062d \u0645\u0641\u062a\u0648\u062d \u0639\u0627\u062f\u0629\u064b\u061f<\/h2>\n<p>\u0627\u062e\u062a\u0631 \u0645\u0641\u062a\u0627\u062d\u0627\u064b \u0639\u0627\u062f\u064a\u0627\u064b \u0645\u0641\u062a\u0648\u062d\u0627\u064b \u0639\u0646\u062f\u0645\u0627 \u062a\u0631\u064a\u062f \u062d\u062f\u0648\u062b \u0625\u062c\u0631\u0627\u0621 \u0623\u0648 \u0625\u0634\u0627\u0631\u0629 \u0641\u0642\u0637 \u0628\u0639\u062f \u062a\u0646\u0634\u064a\u0637 \u0627\u0644\u0645\u0641\u062a\u0627\u062d.<\/p>\n<p>\u0642\u062f \u064a\u0643\u0648\u0646 \u0639\u062f\u0645 \u0627\u0644\u0627\u062a\u0635\u0627\u0644 \u0645\u0646\u0627\u0633\u0628\u0627\u064b \u0644\u0640:<\/p>\n<h3>\u0623\u0632\u0631\u0627\u0631 \u062a\u0634\u063a\u064a\u0644 \u0627\u0644\u0622\u0644\u0627\u062a<\/h3>\n<p>\u0639\u0627\u062f\u0629\u064b\u060c \u064a\u062c\u0628 \u0623\u0644\u0627 \u062a\u0628\u062f\u0623 \u0627\u0644\u0622\u0644\u0629 \u0641\u064a \u0627\u0644\u0639\u0645\u0644 \u062a\u0644\u0642\u0627\u0626\u064a\u0627\u064b \u0628\u0639\u062f \u0639\u0648\u062f\u0629 \u0627\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a. \u064a\u062a\u0637\u0644\u0628 \u0632\u0631 \u0627\u0644\u062a\u0634\u063a\u064a\u0644 (NO) \u0639\u0645\u062f\u0627\u064b \u0645\u0642\u0635\u0648\u062f\u0627\u064b \u0645\u0646 \u0627\u0644\u0645\u0634\u063a\u0644.<\/p>\n<h3>\u0625\u0634\u0627\u0631\u0627\u062a \u0648\u0625\u062f\u062e\u0627\u0644\u0627\u062a \u0627\u0644\u062a\u062d\u0643\u0645<\/h3>\n<p>\u064a\u0645\u0643\u0646 \u0644\u0645\u0641\u062a\u0627\u062d \u0645\u0641\u062a\u0648\u062d \u0639\u0627\u062f\u0629\u064b (NO) \u0625\u0631\u0633\u0627\u0644 \u0625\u0634\u0627\u0631\u0629 \u0639\u0646\u062f \u0627\u0644\u0636\u063a\u0637 \u0639\u0644\u064a\u0647\u060c \u0645\u062b\u0644 \u062a\u0634\u063a\u064a\u0644 \u0645\u0635\u0628\u0627\u062d\u060c \u0623\u0648 \u062a\u0646\u0634\u064a\u0637 \u0645\u0631\u062d\u0644 (\u0631\u064a\u0644\u0627\u064a)\u060c \u0623\u0648 \u0628\u062f\u0621 \u0639\u0645\u0644\u064a\u0629.<\/p>\n<h3>\u0623\u0632\u0631\u0627\u0631 \u0627\u0644\u0636\u063a\u0637 \u0627\u0644\u0644\u062d\u0638\u064a\u0629<\/h3>\n<p>\u062a\u0633\u062a\u062e\u062f\u0650\u0645 \u0627\u0644\u0639\u062f\u064a\u062f \u0645\u0646 \u0627\u0644\u0623\u0632\u0631\u0627\u0631 \u0627\u0644\u0636\u0627\u063a\u0637\u0629 \u0627\u0644\u0644\u062d\u0638\u064a\u0629 \u0646\u0642\u0627\u0637 \u062a\u0648\u0635\u064a\u0644 \u0645\u0641\u062a\u0648\u062d\u0629 \u0639\u0627\u062f\u0629\u064b (NO) \u0644\u0623\u0646 \u0627\u0644\u062f\u0627\u0626\u0631\u0629 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a\u0629 \u062a\u064f\u063a\u0644\u0642 \u0641\u0642\u0637 \u0623\u062b\u0646\u0627\u0621 \u0627\u0644\u0636\u063a\u0637 \u0639\u0644\u0649 \u0627\u0644\u0632\u0631.<\/p>\n<h3>\u0627\u0644\u0625\u062c\u0631\u0627\u0621\u0627\u062a \u0627\u0644\u062a\u064a \u064a\u0628\u062f\u0623\u0647\u0627 \u0627\u0644\u0645\u0633\u062a\u062e\u062f\u0645<\/h3>\n<p>\u0625\u0630\u0627 \u0643\u0627\u0646 \u0627\u0644\u063a\u0631\u0636 \u0647\u0648 \u0628\u062f\u0621 \u0648\u0638\u064a\u0641\u0629 \u0623\u0648 \u062a\u0645\u0643\u064a\u0646\u0647\u0627 \u0623\u0648 \u062a\u0646\u0634\u064a\u0637\u0647\u0627 \u0623\u0648 \u062a\u0634\u063a\u064a\u0644\u0647\u0627\u060c \u063a\u0627\u0644\u0628\u0627\u064b \u0645\u0627 \u064a\u0643\u0648\u0646 \u0645\u0644\u0627\u0645\u0633 \u0627\u0644\u0625\u063a\u0644\u0627\u0642 \u0627\u0644\u0639\u0627\u062f\u064a (NO) \u0647\u0648 \u0627\u0644\u062e\u064a\u0627\u0631 \u0627\u0644\u0645\u0646\u0637\u0642\u064a.<\/p>\n<hr \/>\n<h2>\u0645\u062a\u0649 \u064a\u062c\u0628 \u0639\u0644\u064a\u0643 \u0627\u062e\u062a\u064a\u0627\u0631 \u0645\u0641\u062a\u0627\u062d \u0645\u063a\u0644\u0642 \u0639\u0627\u062f\u0629\u061f<\/h2>\n<p>\u0627\u062e\u062a\u0631 \u0645\u0641\u062a\u0627\u062d\u0627\u064b \u0645\u063a\u0644\u0642\u0627\u064b \u0641\u064a \u0627\u0644\u0639\u0627\u062f\u0629 (Normally Closed) \u0639\u0646\u062f\u0645\u0627 \u064a\u062d\u062a\u0627\u062c \u0627\u0644\u062f\u0648\u0627\u0626\u0631 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a\u0629 \u0625\u0644\u0649 \u0627\u0644\u0628\u0642\u0627\u0621 \u0646\u0634\u0637\u0629 \u0623\u062b\u0646\u0627\u0621 \u0627\u0644\u062a\u0634\u063a\u064a\u0644 \u0627\u0644\u0639\u0627\u062f\u064a \u0648\u0627\u0644\u0627\u0646\u0641\u062a\u0627\u062d \u0639\u0646\u062f \u062d\u062f\u0648\u062b \u0625\u062c\u0631\u0627\u0621 \u0633\u0644\u0627\u0645\u0629 \u0623\u0648 \u0639\u0637\u0644.<\/p>\n<p>\u0642\u062f \u064a\u0643\u0648\u0646 \u0627\u062a\u0635\u0627\u0644 (NC) \u0645\u0646\u0627\u0633\u0628\u0627\u064b \u0644\u0640:<\/p>\n<h3>\u0623\u0632\u0631\u0627\u0631 \u0627\u0644\u062a\u0648\u0642\u0641 \u0627\u0644\u0637\u0627\u0631\u0626<\/h3>\n<p>\u062a\u064f\u0633\u062a\u062e\u062f\u0645 \u0646\u0642\u0627\u0637 \u0627\u0644\u062a\u0644\u0627\u0645\u0633 \u0627\u0644\u0645\u063a\u0644\u0642\u0629 \u0639\u0627\u062f\u0629\u064b (NC) \u0628\u0634\u0643\u0644 \u0648\u0627\u0633\u0639 \u0641\u064a \u062f\u0648\u0627\u0626\u0631 \u062a\u062d\u0643\u0645 \u0627\u0644\u0625\u064a\u0642\u0627\u0641 \u0627\u0644\u0637\u0627\u0631\u0626 \u0644\u0623\u0646 \u0627\u0644\u0636\u063a\u0637 \u0639\u0644\u0649 \u0627\u0644\u0632\u0631 \u064a\u0624\u062f\u064a \u0625\u0644\u0649 \u0641\u062a\u062d \u0627\u0644\u062f\u0627\u0626\u0631\u0629.<\/p>\n<h3>\u0623\u063a\u0637\u064a\u0629 \u0627\u0644\u062d\u0645\u0627\u064a\u0629 \u0648\u0623\u062c\u0647\u0632\u0629 \u0627\u0644\u062a\u0639\u0634\u064a\u0642<\/h3>\n<p>\u064a\u0645\u0643\u0646 \u0644\u062f\u0627\u0631\u0644\u0629 \u0645\u063a\u0644\u0642\u0629 (NC) \u0645\u0631\u0627\u0642\u0628\u0629 \u0645\u0627 \u0625\u0630\u0627 \u0643\u0627\u0646 \u0628\u0627\u0628 \u0627\u0644\u062d\u0645\u0627\u064a\u0629 \u0623\u0648 \u0648\u0627\u0642\u064a \u0627\u0644\u0622\u0644\u0629 \u0644\u0627 \u064a\u0632\u0627\u0644 \u0641\u064a \u0627\u0644\u0648\u0636\u0639 \u0627\u0644\u0635\u062d\u064a\u062d.<\/p>\n<h3>\u0643\u0634\u0641 \u0627\u0644\u0623\u0639\u0637\u0627\u0644<\/h3>\n<p>\u0625\u0630\u0627 \u062a\u0645 \u0641\u0635\u0644 \u0633\u0644\u0643\u060c \u0641\u0642\u062f \u062a\u0641\u062a\u062d \u0627\u0644\u062f\u0627\u0626\u0631\u0629 \u0648\u062a\u0633\u0645\u062d \u0644\u0644\u0646\u0638\u0627\u0645 \u0628\u0627\u0643\u062a\u0634\u0627\u0641 \u062e\u0637\u0623 \u0645\u062d\u062a\u0645\u0644.<\/p>\n<h3>\u0625\u064a\u0642\u0627\u0641 \u0627\u0644\u0648\u0638\u0627\u0626\u0641<\/h3>\n<p>\u062a\u0633\u062a\u062e\u062f\u0645 \u0627\u0644\u0639\u062f\u064a\u062f \u0645\u0646 \u0623\u0632\u0631\u0627\u0631 \u0627\u0644\u0625\u064a\u0642\u0627\u0641 \u0646\u0642\u0627\u0637 \u062a\u0648\u0635\u064a\u0644 \u0645\u063a\u0644\u0642\u0629 \u0639\u0627\u062f\u0629\u064b (NC) \u0644\u0623\u0646 \u0627\u0644\u0636\u063a\u0637 \u0639\u0644\u0649 \u0627\u0644\u0632\u0631 \u064a\u0624\u062f\u064a \u0625\u0644\u0649 \u0642\u0637\u0639 \u062f\u0627\u0626\u0631\u0629 \u0627\u0644\u062a\u062d\u0643\u0645.<\/p>\n<hr \/>\n<h2>NO \u0645\u0642\u0627\u0628\u0644 NC: \u0645\u0642\u0627\u0631\u0646\u0629 \u0633\u0631\u064a\u0639\u0629<\/h2>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"8\">\n<thead>\n<tr>\n<th><strong>\u0645\u064a\u0632\u0629<\/strong><\/th>\n<th><strong>\u0645\u0641\u062a\u0648\u062d \u0627\u0639\u062a\u064a\u0627\u062f\u064a\u0627\u064b<\/strong><\/th>\n<th><strong>\u0645\u063a\u0644\u0642 \u0639\u0627\u062f\u0629\u064b<\/strong><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u062d\u0627\u0644\u0629 \u0627\u0644\u062f\u0627\u0626\u0631\u0629 \u0627\u0644\u0637\u0628\u064a\u0639\u064a\u0629<\/td>\n<td>\u0627\u0641\u062a\u062d<\/td>\n<td>\u0645\u063a\u0644\u0642<\/td>\n<\/tr>\n<tr>\n<td>\u0627\u0644\u062a\u064a\u0627\u0631 \u064a\u062a\u062f\u0641\u0642 \u0628\u0634\u0643\u0644 \u0637\u0628\u064a\u0639\u064a<\/td>\n<td>\u0644\u0627<\/td>\n<td>\u0646\u0639\u0645<\/td>\n<\/tr>\n<tr>\n<td>\u062a\u063a\u064a\u064a\u0631\u0627\u062a \u0646\u0642\u0627\u0637 \u0627\u0644\u062a\u0644\u0627\u0645\u0633 \u0639\u0646\u062f \u0627\u0644\u062a\u0646\u0634\u064a\u0637<\/td>\n<td>\u064a\u063a\u0644\u0642<\/td>\n<td>\u064a\u0641\u062a\u062d<\/td>\n<\/tr>\n<tr>\n<td>\u062f\u0627\u0644\u0629 \u0634\u0627\u0626\u0639\u0629<\/td>\n<td>\u0627\u0628\u062f\u0623 \u0623\u0648 \u0641\u0639\u0651\u0644<\/td>\n<td>\u0625\u064a\u0642\u0627\u0641 \u0623\u0648 \u0645\u0631\u0627\u0642\u0628\u0629<\/td>\n<\/tr>\n<tr>\n<td>\u062a\u0637\u0628\u064a\u0642 \u0646\u0645\u0648\u0630\u062c\u064a<\/td>\n<td>\u0632\u0631 \u0627\u0644\u0628\u062f\u0621<\/td>\n<td>\u0632\u0631 \u0627\u0644\u0637\u0648\u0627\u0631\u0626<\/td>\n<\/tr>\n<tr>\n<td>\u064a\u0645\u0643\u0646 \u0623\u0646 \u064a\u0633\u0627\u0639\u062f \u0641\u064a \u0627\u0643\u062a\u0634\u0627\u0641 \u0627\u0644\u0623\u0633\u0644\u0627\u0643 \u0627\u0644\u062a\u0627\u0644\u0641\u0629<\/td>\n<td>\u0639\u0627\u062f\u0629\u064b \u0645\u0627 \u064a\u0643\u0648\u0646 \u0645\u062d\u062f\u0648\u062f\u0627\u064b<\/td>\n<td>\u063a\u0627\u0644\u0628\u0627\u064b \u0645\u0627 \u064a\u0643\u0648\u0646 \u0623\u0643\u062b\u0631 \u0641\u0639\u0627\u0644\u064a\u0629<\/td>\n<\/tr>\n<tr>\n<td>\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0634\u0627\u0626\u0639 \u0641\u064a \u062f\u0648\u0627\u0626\u0631 \u0627\u0644\u0623\u0645\u0627\u0646<\/td>\n<td>\u064a\u0639\u062a\u0645\u062f \u0639\u0644\u0649 \u0627\u0644\u062a\u0637\u0628\u064a\u0642<\/td>\n<td>\u0627\u0644\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0627\u0644\u0645\u062a\u0643\u0631\u0631<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<hr \/>\n<h2>\u0647\u0644 \u064a\u0645\u0643\u0646 \u0623\u0646 \u064a\u062d\u062a\u0648\u064a \u0627\u0644\u0645\u0641\u062a\u0627\u062d \u0639\u0644\u0649 \u0646\u0642\u0627\u0637 \u0627\u062a\u0635\u0627\u0644 \u0645\u0641\u062a\u0648\u062d\u0629 (NO) \u0648\u0645\u063a\u0644\u0642\u0629 (NC) \u0645\u0639\u0627\u064b\u061f<\/h2>\n<p>\u0646\u0639\u0645. \u062a\u062a\u0648\u0641\u0631 \u0627\u0644\u0639\u062f\u064a\u062f \u0645\u0646 \u0645\u0641\u0627\u062a\u064a\u062d \u0627\u0644\u0623\u0632\u0631\u0627\u0631 \u0627\u0644\u0636\u063a\u0637\u064a\u0629 \u0627\u0644\u0635\u0646\u0627\u0639\u064a\u0629 \u0628\u062a\u0643\u0648\u064a\u0646\u0627\u062a \u0646\u0642\u0627\u0637 \u062a\u0648\u0635\u064a\u0644 \u0645\u0641\u062a\u0648\u062d\u0629 (NO) \u0648\u0645\u063a\u0644\u0642\u0629 (NC) \u0639\u0644\u0649 \u062d\u062f \u0633\u0648\u0627\u0621.<\/p>\n<p>\u0642\u062f \u064a\u062d\u062a\u0648\u064a \u0627\u0644\u0645\u062d\u0648\u0644 \u0639\u0644\u0649:<\/p>\n<ul>\n<li>1 \u0646\u062a\u0631\u0627\u062a<\/li>\n<li>1NC<\/li>\n<li>1 \u0645\u0641\u062a\u0648\u062d + 1 \u0645\u063a\u0644\u0642<\/li>\n<li>\u062b\u0646\u0627\u0626\u064a \u0623\u0643\u0633\u064a\u062f \u0627\u0644\u0646\u064a\u062a\u0631\u0648\u062c\u064a\u0646<\/li>\n<li>2NC<\/li>\n<li>\u0645\u062c\u0645\u0648\u0639\u0627\u062a \u0627\u0644\u0627\u062a\u0635\u0627\u0644 \u0627\u0644\u0645\u062a\u0639\u062f\u062f\u0629<\/li>\n<\/ul>\n<p>\u064a\u0645\u0643\u0646 \u0644\u0645\u0641\u062a\u0627\u062d \u064a\u062c\u0645\u0639 \u0628\u064a\u0646 \u0646\u0642\u0627\u0637 \u062a\u0648\u0635\u064a\u0644 \u0645\u0641\u062a\u0648\u062d\u0629 \u0639\u0627\u062f\u0629\u064b (NO) \u0648\u0645\u063a\u0644\u0642\u0629 \u0639\u0627\u062f\u0629\u064b (NC) \u0623\u062f\u0627\u0621 \u0648\u0638\u0627\u0626\u0641 \u0645\u062e\u062a\u0644\u0641\u0629 \u062f\u0627\u062e\u0644 \u0646\u0641\u0633 \u0646\u0638\u0627\u0645 \u0627\u0644\u062a\u062d\u0643\u0645.<\/p>\n<p>\u0639\u0644\u0649 \u0633\u0628\u064a\u0644 \u0627\u0644\u0645\u062b\u0627\u0644:<\/p>\n<ul>\n<li>\u064a\u0645\u0643\u0646 \u0644\u062c\u0647\u0629 \u0627\u0644\u0627\u062a\u0635\u0627\u0644 \u0627\u0644\u0645\u0641\u062a\u0648\u062d\u0629 \u0639\u0627\u062f\u0629\u064b (NO) \u0625\u0631\u0633\u0627\u0644 \u0625\u0634\u0627\u0631\u0629 \u0628\u062f\u0621 \u0623\u0648 \u062a\u062d\u0643\u0645.<\/li>\n<li>\u064a\u0645\u0643\u0646 \u0644\u062c\u0647\u0629 \u0627\u0644\u0627\u062a\u0635\u0627\u0644 \u0627\u0644\u0645\u063a\u0644\u0642\u0629 \u0639\u0627\u062f\u0629\u064b (NC) \u0645\u0642\u0627\u0637\u0639\u0629 \u062f\u0627\u0626\u0631\u0629 \u0623\u062e\u0631\u0649 \u0623\u0648 \u062a\u0648\u0641\u064a\u0631 \u0645\u0631\u0627\u0642\u0628\u0629 \u0644\u0644\u062d\u0627\u0644\u0629.<\/li>\n<\/ul>\n<p>\u064a\u0645\u0643\u0646 \u0623\u0646 \u064a\u0624\u062f\u064a \u0630\u0644\u0643 \u0625\u0644\u0649 \u062a\u0628\u0633\u064a\u0637 \u062a\u0635\u0645\u064a\u0645 \u0644\u0648\u062d\u0629 \u0627\u0644\u062a\u062d\u0643\u0645 \u0648\u062a\u0648\u0641\u064a\u0631 \u0627\u0644\u0645\u0632\u064a\u062f \u0645\u0646 \u0627\u0644\u0645\u0631\u0648\u0646\u0629.<\/p>\n<p>\u0642\u0628\u0644 \u0627\u0644\u0634\u0631\u0627\u0621\u060c \u062a\u062d\u0642\u0642 \u062c\u064a\u062f\u0627\u064b \u0645\u0646 \u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u0645\u0641\u062a\u0627\u062d \u0644\u0623\u0646 \u062a\u0643\u0648\u064a\u0646\u0627\u062a \u0646\u0642\u0627\u0637 \u0627\u0644\u062a\u0644\u0627\u0645\u0633 \u0627\u0644\u0645\u062a\u0627\u062d\u0629 \u0642\u062f \u062a\u062e\u062a\u0644\u0641 \u062d\u0633\u0628 \u0627\u0644\u0637\u0631\u0627\u0632.<\/p>\n<hr \/>\n<h2>\u0647\u0644 \u0627\u0644\u0645\u063a\u0644\u0642 \u0639\u0627\u062f\u0629\u064b \u0623\u0643\u062b\u0631 \u0623\u0645\u0627\u0646\u0627\u064b \u0645\u0646 \u0627\u0644\u0645\u0641\u062a\u0648\u062d\u061f<\/h2>\n<p>\u0644\u0627\u060c \u0648\u0644\u0627 \u062a\u064f\u0639\u062f\u0651 \u0643\u0627\u0631\u0648\u0644\u064a\u0646\u0627 \u0627\u0644\u0634\u0645\u0627\u0644\u064a\u0629 \u0622\u0645\u0646\u0629 \u062a\u0644\u0642\u0627\u0626\u064a\u0627\u064b \u0641\u064a \u0643\u0644 \u0645\u0648\u0642\u0641.<\/p>\n<p>\u063a\u0627\u0644\u0628\u0627\u064b \u0645\u0627 \u064a\u064f\u0641\u0636\u0644 \u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0646\u0642\u0637\u0629 \u062a\u0648\u0635\u064a\u0644 \u0645\u063a\u0644\u0642\u0629 \u0639\u0627\u062f\u0629\u064b (NC) \u0644\u0645\u0631\u0627\u0642\u0628\u0629 \u0627\u0644\u0633\u0644\u0627\u0645\u0629\u060c \u0644\u0623\u0646 \u0627\u0644\u062f\u0627\u0626\u0631\u0629 \u0627\u0644\u0645\u0641\u062a\u0648\u062d\u0629 \u064a\u0645\u0643\u0646 \u0623\u0646 \u062a\u0634\u064a\u0631 \u0625\u0644\u0649 \u0623\u0646\u0647 \u0642\u062f \u062a\u0645 \u0627\u0644\u0636\u063a\u0637 \u0639\u0644\u0649 \u0632\u0631 \u0623\u0648 \u0623\u0646 \u0647\u0646\u0627\u0643 \u062a\u0639\u0637\u0644\u0627\u064b \u0645\u062d\u062a\u0645\u0644\u0627\u064b \u0641\u064a \u0627\u0644\u0627\u062a\u0635\u0627\u0644. \u0648\u0645\u0639 \u0630\u0644\u0643\u060c \u0641\u0625\u0646 \u0627\u0644\u0633\u0644\u0627\u0645\u0629 \u062a\u0639\u062a\u0645\u062f \u0639\u0644\u0649 \u062a\u0635\u0645\u064a\u0645 \u0627\u0644\u0646\u0638\u0627\u0645 \u0628\u0627\u0644\u0643\u0627\u0645\u0644.<\/p>\n<p>\u0639\u0644\u0649 \u0633\u0628\u064a\u0644 \u0627\u0644\u0645\u062b\u0627\u0644\u060c \u0642\u062f \u064a\u0643\u0648\u0646 \u0645\u0641\u062a\u0627\u062d \u0627\u0644\u062a\u0634\u063a\u064a\u0644 \u0627\u0644\u0639\u0627\u062f\u064a \u0627\u0644\u0645\u0641\u062a\u0648\u062d (NO) \u0647\u0648 \u0627\u0644\u062e\u064a\u0627\u0631 \u0627\u0644\u0623\u0643\u062b\u0631 \u0623\u0645\u0627\u0646\u0627\u064b \u0644\u062a\u0634\u063a\u064a\u0644 \u0627\u0644\u0622\u0644\u0629\u060c \u0644\u0623\u0646 \u0627\u0644\u0622\u0644\u0629 \u064a\u062c\u0628 \u0623\u0646 \u062a\u062a\u0637\u0644\u0628 \u0625\u062c\u0631\u0627\u0621\u064b \u0645\u062a\u0639\u0645\u062f\u064b\u0627 \u0642\u0628\u0644 \u0627\u0644\u0628\u062f\u0621.<\/p>\n<p>\u0627\u0644\u0633\u0624\u0627\u0644 \u0627\u0644\u0623\u0641\u0636\u0644 \u0647\u0648:<\/p>\n<p><strong>\u0645\u0627\u0630\u0627 \u064a\u062c\u0628 \u0623\u0646 \u064a\u062d\u062f\u062b \u0639\u0646\u062f \u062a\u0641\u0639\u064a\u0644 \u0627\u0644\u0645\u0641\u062a\u0627\u062d \u0623\u0648 \u0641\u0635\u0644\u0647 \u0623\u0648 \u062a\u0644\u0641\u0647\u061f<\/strong><\/p>\n<p>\u0625\u0630\u0627 \u0643\u0627\u0646 \u064a\u0646\u0628\u063a\u064a \u0639\u0644\u0649 \u0627\u0644\u0646\u0638\u0627\u0645 \u0627\u0644\u062a\u0648\u0642\u0641 \u0623\u0648 \u0627\u0644\u062f\u062e\u0648\u0644 \u0641\u064a \u062d\u0627\u0644\u0629 \u0622\u0645\u0646\u0629 \u0639\u0646\u062f \u0627\u0646\u0642\u0637\u0627\u0639 \u0627\u0644\u062f\u0627\u0626\u0631\u0629\u060c \u0641\u0642\u062f \u064a\u0643\u0648\u0646 \u0645\u0644\u0627\u0645\u0633 \u0627\u0644\u0625\u063a\u0644\u0627\u0642 \u0627\u0644\u0639\u0627\u062f\u064a (NC) \u0645\u0646\u0627\u0633\u0628\u0627\u064b.<\/p>\n<p>\u0625\u0630\u0627 \u0643\u0627\u0646 \u0627\u0644\u0646\u0638\u0627\u0645 \u064a\u062c\u0628 \u0623\u0646 \u064a\u0639\u0645\u0644 \u0641\u0642\u0637 \u0628\u0639\u062f \u0623\u0646 \u064a\u0624\u062f\u064a \u0625\u062c\u0631\u0627\u0621 \u0645\u062a\u0639\u0645\u062f \u0625\u0644\u0649 \u0625\u063a\u0644\u0627\u0642 \u0627\u0644\u062f\u0627\u0626\u0631\u0629\u060c \u0641\u0642\u062f \u064a\u0643\u0648\u0646 \u062a\u0644\u0627\u0645\u0633 \u0645\u0641\u062a\u0648\u062d \u0639\u0627\u062f\u0629\u064b (NO) \u0623\u0643\u062b\u0631 \u0645\u0644\u0627\u0621\u0645\u0629.<\/p>\n<hr \/>\n<h2>\u0643\u064a\u0641\u064a\u0629 \u0627\u062e\u062a\u064a\u0627\u0631 \u0645\u0641\u062a\u0627\u062d \u0627\u0644\u062a\u0648\u0635\u064a\u0644 \u0627\u0644\u0645\u0641\u062a\u0648\u062d (NO) \u0623\u0648 \u0627\u0644\u0645\u063a\u0644\u0642 (NC) \u0627\u0644\u0645\u0646\u0627\u0633\u0628<\/h2>\n<p>\u0642\u0628\u0644 \u0627\u062e\u062a\u064a\u0627\u0631 \u0627\u0644\u0645\u0641\u062a\u0627\u062d\u060c \u0636\u0639 \u0641\u064a \u0627\u0639\u062a\u0628\u0627\u0631\u0643 \u0627\u0644\u0623\u0633\u0626\u0644\u0629 \u0627\u0644\u062a\u0627\u0644\u064a\u0629.<\/p>\n<h3>\u0661. \u0645\u0627 \u0627\u0644\u0630\u064a \u064a\u064f\u0637\u0644\u0628 \u0645\u0646 \u0627\u0644\u0645\u0641\u062a\u0627\u062d \u0641\u0639\u0644\u0647\u061f<\/h3>\n<p>\u0647\u0644 \u0627\u0644\u0645\u0641\u062a\u0627\u062d \u0645\u062e\u0635\u0635 \u0644\u0640:<\/p>\n<ul>\n<li>\u0628\u062f\u0621 \u062a\u0634\u063a\u064a\u0644 \u0622\u0644\u0629\u061f<\/li>\n<li>\u0625\u064a\u0642\u0627\u0641 \u0622\u0644\u0629\u061f<\/li>\n<li>\u0625\u0637\u0644\u0627\u0642 \u0625\u0634\u0627\u0631\u0629\u061f<\/li>\n<li>\u062a\u0646\u0634\u064a\u0637 \u0627\u0644\u0645\u0631\u062d\u0644\u061f<\/li>\n<li>\u0645\u0631\u0627\u0642\u0628\u0629 \u062d\u0627\u0631\u0633 \u0623\u0645\u0646\u061f<\/li>\n<li>\u0645\u0642\u0627\u0637\u0639\u0629 \u062f\u0627\u0626\u0631\u0629 \u0627\u0644\u062a\u062d\u0643\u0645\u061f<\/li>\n<\/ul>\n<p>\u0627\u0644\u0648\u0638\u064a\u0641\u0629 \u0627\u0644\u0645\u0637\u0644\u0648\u0628\u0629 \u0647\u064a \u0639\u0627\u062f\u0629 \u0627\u0644\u0639\u0627\u0645\u0644 \u0627\u0644\u0623\u0648\u0644 \u0627\u0644\u0630\u064a \u064a\u062c\u0628 \u0645\u0631\u0627\u0639\u0627\u062a\u0647.<\/p>\n<h3>\u0662. \u0645\u0627\u0630\u0627 \u064a\u062c\u0628 \u0623\u0646 \u064a\u062d\u062f\u062b \u0625\u0630\u0627 \u0627\u0646\u0642\u0637\u0639 \u0633\u0644\u0643\u061f<\/h3>\n<p>\u0628\u0627\u0644\u0646\u0633\u0628\u0629 \u0644\u0644\u062f\u0648\u0627\u0626\u0631 \u0627\u0644\u0645\u062a\u0639\u0644\u0642\u0629 \u0628\u0627\u0644\u0633\u0644\u0627\u0645\u0629\u060c \u064a\u062c\u0628 \u0645\u0631\u0627\u0639\u0627\u0629 \u0643\u064a\u0641 \u064a\u062c\u0628 \u0623\u0646 \u064a\u0633\u062a\u062c\u064a\u0628 \u0627\u0644\u0646\u0638\u0627\u0645 \u0644\u0623\u0633\u0644\u0627\u0643 \u0645\u0641\u0635\u0648\u0644\u0629 \u0623\u0648 \u062a\u0627\u0644\u0641\u0629.<\/p>\n<p>\u0625\u0630\u0627 \u0643\u0627\u0646 \u064a\u0646\u0628\u063a\u064a \u0644\u0644\u0646\u0638\u0627\u0645 \u0623\u0646 \u064a\u062a\u0648\u0642\u0641 \u0639\u0646\u062f \u0627\u0646\u0642\u0637\u0627\u0639 \u0627\u0644\u062f\u0627\u0626\u0631\u0629\u060c \u0641\u0642\u062f \u062a\u0648\u0641\u0631 \u062a\u0647\u064a\u0626\u0629 \u0627\u0644\u0645\u063a\u0644\u0642 \u0639\u0627\u062f\u0629\u064b \u062a\u0635\u0645\u064a\u0645\u0627\u064b \u0623\u0643\u062b\u0631 \u0645\u0644\u0627\u0621\u0645\u0629.<\/p>\n<h3>3. \u0647\u0644 \u0627\u0644\u062a\u0637\u0628\u064a\u0642 \u062d\u0631\u062c \u0645\u0646 \u0627\u0644\u0646\u0627\u062d\u064a\u0629 \u0627\u0644\u0623\u0645\u0646\u064a\u0629\u061f<\/h3>\n<p>\u0642\u062f \u062a\u062a\u0637\u0644\u0628 \u0623\u0646\u0638\u0645\u0629 \u0627\u0644\u062a\u0648\u0642\u0641 \u0627\u0644\u0637\u0627\u0631\u0626\u060c \u0648\u0648\u0627\u0642\u064a\u0627\u062a \u0627\u0644\u0622\u0644\u0627\u062a\u060c \u0648\u0623\u062c\u0647\u0632\u0629 \u0627\u0644\u062a\u0639\u0634\u064a\u0642 \u0627\u0644\u0648\u0642\u0627\u0626\u064a\u0629 \u0645\u0643\u0648\u0646\u0627\u062a \u0625\u0633\u0644\u0627\u0645\u064a\u0629 \u0625\u0636\u0627\u0641\u064a\u0629 \u0648\u0623\u0646\u0638\u0645\u0629 \u062a\u062d\u0643\u0645 \u0645\u062a\u062e\u0635\u0635\u0629.<\/p>\n<p>\u0644\u0627 \u062a\u0642\u0645 \u0628\u062a\u062d\u062f\u064a\u062f \u0627\u0644\u0645\u0641\u062a\u0627\u062d \u0628\u0646\u0627\u0621\u064b \u0639\u0644\u0649 \u0645\u0627 \u0625\u0630\u0627 \u0643\u0627\u0646 \u0645\u0641\u062a\u0648\u062d\u0627\u064b \u0639\u0627\u062f\u064a\u0627\u064b (NO) \u0623\u0648 \u0645\u063a\u0644\u0642\u0627\u064b \u0639\u0627\u062f\u064a\u0627\u064b (NC) \u0641\u0642\u0637. \u062a\u062d\u0642\u0642 \u0645\u0646 \u0645\u062a\u0637\u0644\u0628\u0627\u062a \u0627\u0644\u0633\u0644\u0627\u0645\u0629 \u0630\u0627\u062a \u0627\u0644\u0635\u0644\u0629 \u0644\u0644\u062a\u0637\u0628\u064a\u0642 \u0628\u0623\u0643\u0645\u0644\u0647.<\/p>\n<h3>4. \u0645\u0627 \u0647\u0648 \u0627\u0644\u062a\u0642\u064a\u064a\u0645 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a \u0627\u0644\u0645\u0637\u0644\u0648\u0628\u061f<\/h3>\n<p>\u062a\u062d\u0642\u0642 \u0645\u0646 \u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u0645\u0641\u062a\u0627\u062d\u060c \u0628\u0645\u0627 \u0641\u064a \u0630\u0644\u0643:<\/p>\n<ul>\n<li>\u0627\u0644\u062c\u0647\u062f \u0627\u0644\u0645\u0642\u0646\u0646<\/li>\n<li>\u0627\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u0645\u0642\u0646\u0646<\/li>\n<li>\u062a\u0642\u064a\u064a\u0645 \u062c\u0647\u0627\u062a \u0627\u0644\u0627\u062a\u0635\u0627\u0644<\/li>\n<li>AC or DC compatibility<\/li>\n<li>Load type<\/li>\n<li>\u0627\u0644\u062d\u064a\u0627\u0629 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a\u0629<\/li>\n<\/ul>\n<p>A switch with the correct contact type may still be unsuitable if its electrical rating does not match the application.<\/p>\n<h3>5. What Operating Environment Will the Switch Face?<\/h3>\n<p>Consider:<\/p>\n<ul>\n<li>Water exposure<\/li>\n<li>Dust<\/li>\n<li>Oil<\/li>\n<li>Vibration<\/li>\n<li>High or low temperatures<\/li>\n<li>Outdoor installation<\/li>\n<\/ul>\n<p>For demanding industrial environments, an appropriate protection rating may be important.<\/p>\n<hr \/>\n<h2>Choosing ONPOW Normally Open and Normally Closed Switches<\/h2>\n<p><a style=\"color: red;\" href=\"https:\/\/onpowbutton.com\/ar\/\"><strong>\u0623\u0648\u0646\u0628\u0648<\/strong><\/a> offers industrial push button switches with a range of normally open switch and normally closed switch contact options.<\/p>\n<p>Depending on the product series, buyers can select different configurations to support functions such as:<\/p>\n<ul>\n<li>Machine start and stop control<\/li>\n<li>Emergency stop operation<\/li>\n<li>\u0644\u0648\u062d\u0627\u062a \u0627\u0644\u062a\u062d\u0643\u0645 \u0627\u0644\u0635\u0646\u0627\u0639\u064a\u0629<\/li>\n<li>Equipment monitoring<\/li>\n<li>Automation systems<\/li>\n<li>Custom control applications<\/li>\n<\/ul>\n<p>ONPOW push button switches are available in different mounting sizes, materials, actuator styles, illumination options, and protection levels. This allows buyers to choose a switch based on both electrical requirements and installation conditions.<\/p>\n<p>When selecting an ONPOW switch, check the product specifications to confirm the available NO and NC contact configurations for the chosen model.<\/p>\n<hr \/>\n<p><!-- \u56fe\u72473 --><img decoding=\"async\" src=\"https:\/\/onpowbutton.com\/wp-content\/uploads\/2026\/07\/Certificate.webp\" alt=\"ONPOW product certificates\" \/><\/p>\n<hr \/>\n<h2>\u0623\u0633\u0626\u0644\u0629 \u0645\u062a\u0643\u0631\u0631\u0629<\/h2>\n<h3>Is normally closed safer than normally open?<\/h3>\n<p>For many safety circuits, an NC switch is considered more suitable because a broken wire or disconnected connection may open the circuit and trigger a fault or stop response. However, safety depends on the complete system design.<\/p>\n<h3>Is an emergency stop button normally open or normally closed?<\/h3>\n<p>Emergency stop buttons commonly use normally closed contacts. Pressing the button opens the safety circuit and sends a stop signal.<\/p>\n<h3>Is a start button normally open or normally closed?<\/h3>\n<p>A machine start button commonly uses a normally open contact. Pressing the button closes the circuit and sends a start command.<\/p>\n<h3>What does 1NO and 1NC mean?<\/h3>\n<p>1NO means one normally open contact. 1NC means one normally closed contact.<\/p>\n<p>A 1NO + 1NC configuration includes one normally open contact and one normally closed contact.<\/p>\n<h3>Can I use an NO switch as a stop button?<\/h3>\n<p>An NO contact can be used in some control designs, but it may not provide the same fault-monitoring behaviour as an NC stop circuit. The correct configuration depends on the control system and safety requirements.<\/p>\n<h3>Can I use an NC switch as a start button?<\/h3>\n<p>An NC switch can be used for certain control functions, but it is generally not the typical choice for a standard machine start command. A normally open contact is often more suitable because the operator must actively close the circuit to start the machine.<\/p>\n<hr \/>\n<h2>\u062e\u0648\u0627\u0637\u0631 \u0623\u062e\u064a\u0631\u0629<\/h2>\n<p>When comparing a normally open switch with a normally closed switch, neither contact type is universally best.<\/p>\n<p>A normally open switch is commonly used to start, activate, or trigger a function. A normally closed switch is often preferred for stop functions, safety monitoring, and applications where an interrupted circuit should produce a safe response.<\/p>\n<p>For many safety-related circuits, NC contacts provide an important fail-safe advantage. However, the final choice should always be based on the application, electrical requirements, control system, and relevant safety standards.<\/p>\n<p>Before purchasing, confirm the required contact configuration and review the switch specifications carefully. Choosing the correct NO or NC contact can improve system reliability, simplify control design, and support safer equipment operation.<\/p>","protected":false},"excerpt":{"rendered":"<p>When choosing a push button switch, limit switch, sensor, or safety control device, many buyers ask the same question: Which is safer, a normally open switch or a normally closed switch? The short answer is: A normally closed (NC) switch is generally safer for safety-critical circuits because it can provide fail-safe monitoring. However, the safest [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":2254,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","footnotes":""},"categories":[1,98],"tags":[],"class_list":["post-2256","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","category-news"],"uagb_featured_image_src":{"full":["https:\/\/onpowbutton.com\/wp-content\/uploads\/2026\/08\/Which-is-safer-NO-or-NC.webp",1536,1024,false],"thumbnail":["https:\/\/onpowbutton.com\/wp-content\/uploads\/2026\/08\/Which-is-safer-NO-or-NC-150x150.webp",150,150,true],"medium":["https:\/\/onpowbutton.com\/wp-content\/uploads\/2026\/08\/Which-is-safer-NO-or-NC-300x200.webp",300,200,true],"medium_large":["https:\/\/onpowbutton.com\/wp-content\/uploads\/2026\/08\/Which-is-safer-NO-or-NC-768x512.webp",768,512,true],"large":["https:\/\/onpowbutton.com\/wp-content\/uploads\/2026\/08\/Which-is-safer-NO-or-NC-1024x683.webp",1024,683,true],"1536x1536":["https:\/\/onpowbutton.com\/wp-content\/uploads\/2026\/08\/Which-is-safer-NO-or-NC.webp",1536,1024,false],"2048x2048":["https:\/\/onpowbutton.com\/wp-content\/uploads\/2026\/08\/Which-is-safer-NO-or-NC.webp",1536,1024,false],"trp-custom-language-flag":["https:\/\/onpowbutton.com\/wp-content\/uploads\/2026\/08\/Which-is-safer-NO-or-NC-18x12.webp",18,12,true]},"uagb_author_info":{"display_name":"hongbo","author_link":"https:\/\/onpowbutton.com\/ar\/author\/hongbo\/"},"uagb_comment_info":0,"uagb_excerpt":"When choosing a push button switch, limit switch, sensor, or safety control device, many buyers ask the same question: Which is safer, a normally open switch or a normally closed switch? The short answer is: A normally closed (NC) switch is generally safer for safety-critical circuits because it can provide fail-safe monitoring. However, the safest&hellip;","_links":{"self":[{"href":"https:\/\/onpowbutton.com\/ar\/wp-json\/wp\/v2\/posts\/2256","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/onpowbutton.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/onpowbutton.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/onpowbutton.com\/ar\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/onpowbutton.com\/ar\/wp-json\/wp\/v2\/comments?post=2256"}],"version-history":[{"count":1,"href":"https:\/\/onpowbutton.com\/ar\/wp-json\/wp\/v2\/posts\/2256\/revisions"}],"predecessor-version":[{"id":2257,"href":"https:\/\/onpowbutton.com\/ar\/wp-json\/wp\/v2\/posts\/2256\/revisions\/2257"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/onpowbutton.com\/ar\/wp-json\/wp\/v2\/media\/2254"}],"wp:attachment":[{"href":"https:\/\/onpowbutton.com\/ar\/wp-json\/wp\/v2\/media?parent=2256"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/onpowbutton.com\/ar\/wp-json\/wp\/v2\/categories?post=2256"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/onpowbutton.com\/ar\/wp-json\/wp\/v2\/tags?post=2256"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}