{"id":2143,"date":"2026-07-20T07:50:00","date_gmt":"2026-07-20T07:50:00","guid":{"rendered":"https:\/\/onpowbutton.com\/news\/25mm-push-button-switch-guide\/"},"modified":"2026-07-20T07:52:49","modified_gmt":"2026-07-20T07:52:49","slug":"25mm-push-button-switch-guide","status":"publish","type":"post","link":"https:\/\/onpowbutton.com\/es\/news\/25mm-push-button-switch-guide\/","title":{"rendered":"How to Specify a 25mm Push Button for Your Panel"},"content":{"rendered":"<div class=\"b2b-article\">\n<p style=\"margin:0 0 16px;line-height:1.7\">A 25mm push button switch is the right starting point when the panel drawing calls for a <strong>\u03c625 mounting hole<\/strong>. Select it from that physical interface outward: verify the finished cutout and panel thickness, reserve room behind the panel, then choose operation, contacts, terminals, and any illumination. The face can be wider than 25mm, so measuring the bezel instead of the hole is a common and avoidable error.<\/p>\n<nav class=\"b2b-toc\" style=\"background:#f5f8fa;padding:16px 20px;border-radius:8px;margin:0 0 24px\">\n<h2 style=\"margin:42px 0 14px;scroll-margin-top:96px\">Contents<\/h2>\n<ul style=\"margin:0 0 18px 1.2em;line-height:1.7\">\n<li style=\"margin:0 0 8px\"><a style=\"color:#27649a;text-decoration:underline\" href=\"#part-1-start-with-the-25-panel-interface\">Part 1. Start With the \u03c625 Panel Interface<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a style=\"color:#27649a;text-decoration:underline\" href=\"#part-2-decide-whether-25mm-fits-between-22mm-and-30mm\">Part 2. Decide Whether 25mm Fits Between 22mm and 30mm<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a style=\"color:#27649a;text-decoration:underline\" href=\"#part-3-check-the-rear-envelope-before-you-buy\">Part 3. Check the Rear Envelope Before You Buy<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a style=\"color:#27649a;text-decoration:underline\" href=\"#part-4-match-the-operation-to-the-command\">Part 4. Match the Operation to the Command<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a style=\"color:#27649a;text-decoration:underline\" href=\"#part-5-specify-contacts-terminals-and-front-conditions\">Part 5. Specify Contacts, Terminals, and Front Conditions<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a style=\"color:#27649a;text-decoration:underline\" href=\"#part-6-route-a-25-requirement-to-onpow-evidence\">Part 6. Route a \u03c625 Requirement to ONPOW Evidence<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a style=\"color:#27649a;text-decoration:underline\" href=\"#part-7-set-the-fit-boundary-and-build-the-rfq\">Part 7. Set the Fit Boundary and Build the RFQ<\/a><\/li>\n<\/ul>\n<\/nav>\n<figure style=\"margin:26px 0;text-align:center\"><img decoding=\"async\" style=\"max-width:640px;width:100%;height:auto;display:block;margin:0 auto;border-radius:8px\" alt=\"ONPOW push button kit used to compare panel-mounted control interfaces\" src=\"https:\/\/onpowbutton.com\/wp-content\/uploads\/2026\/06\/Push-Button-Switch-Kit-Cover-image.webp\" \/><\/figure>\n<h2 style=\"margin:42px 0 14px;scroll-margin-top:96px\" id=\"part-1-start-with-the-25-panel-interface\">Part 1. Start With the \u03c625 Panel Interface<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7\">\u201c25mm\u201d should mean the installation diameter only when the manufacturer\u2019s drawing says it does. Product listings commonly separate a panel cutout from the visible head, because the threaded body passes through the hole while the bezel remains on the front face. Treat \u03c625 as a mechanical requirement, not as shorthand for a particular switch function, terminal, or circuit capability.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">Start with the panel document. Record the nominal hole size, permissible tolerance, panel material, panel thickness, paint or coating condition, and whether a finished hole already exists. A new panel can be designed around the specified interface; an existing panel must be measured after coating and before a replacement is ordered. A \u201cclose enough\u201d hole can leave the retaining hardware unable to clamp correctly or can force an unapproved adapter.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">When the drawing specifies a smaller interface, compare the <a style=\"color:#27649a;text-decoration:underline\" href=\"https:\/\/onpowbutton.com\/es\/news\/19mm-push-button-switch-guide\/\">19mm push button interface<\/a> before assuming a larger operator will solve a visibility problem. If the drawing says \u03c622, use the <a style=\"color:#27649a;text-decoration:underline\" href=\"https:\/\/onpowbutton.com\/es\/news\/22mm-push-button-switch-guide\/\">22mm push button cutout guide<\/a> as the first comparison point.<\/p>\n<h2 style=\"margin:42px 0 14px;scroll-margin-top:96px\" id=\"part-2-decide-whether-25mm-fits-between-22mm-and-30mm\">Part 2. Decide Whether 25mm Fits Between 22mm and 30mm<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7\">Twenty-five millimetres is a distinct mounting interface, not a conversion of 22mm or 30mm. The question is not which diameter sounds more robust; it is which documented body fits the existing or planned opening and leaves a workable rear envelope.<\/p>\n<table style=\"width:100%;border-collapse:collapse\">\n<thead>\n<tr>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">Panel situation<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">Best next action<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">Reason<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">New panel calls for \u03c625<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Specify a \u03c625 product family and obtain its drawing<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">The cutout is already the selection anchor<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Existing \u03c622 hole<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Keep a \u03c622 operator or obtain a documented conversion approach<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">A \u03c625 threaded body does not pass through the smaller opening<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Existing \u03c630 hole<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Select a \u03c630 product or a manufacturer-approved reducing solution<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">A \u03c625 operator cannot be assumed to clamp a larger opening<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Face diameter is known, hole is unknown<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Measure the opening from the rear or remove the old operator<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">The bezel diameter does not identify the body<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Several devices are tightly spaced<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Draw front and rear keep-out zones<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Nut flats, terminals, and wire exits may conflict even when holes fit<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"margin:0 0 16px;line-height:1.7\">The visible actuator is still important to the operator, but it is a second decision. It affects marking, reach, illumination, and the spacing of adjacent legends. It does not establish the panel hole. The practical order is therefore cutout, rear envelope, front layout, then electrical configuration.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">Avoid using a 25mm choice to blur into a 30mm strategy. A 30mm guide may be useful when a panel actually has a \u03c630 interface, but the larger interface is a different routing decision. Likewise, a 25mm article should not turn a category current field into a claim about a specific installed load.<\/p>\n<h2 style=\"margin:42px 0 14px;scroll-margin-top:96px\" id=\"part-3-check-the-rear-envelope-before-you-buy\">Part 3. Check the Rear Envelope Before You Buy<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7\">The finished hole tells you whether the body can enter the panel. It does not tell you whether the completed device can be wired, serviced, or removed. Rear clearance must include the threaded or molded body, retaining nut or bracket, terminal projection, connector or lug height, wire-bend radius, and finger or tool access.<\/p>\n<figure style=\"margin:26px 0;text-align:center\"><img decoding=\"async\" style=\"max-width:640px;width:100%;height:auto;display:block;margin:0 auto;border-radius:8px\" alt=\"ONPOW switch kit showing body and mounting components for rear-envelope planning\" src=\"https:\/\/onpowbutton.com\/wp-content\/uploads\/2026\/06\/Push-Button-Switch-Kit-2.webp\" \/><\/figure>\n<p style=\"margin:0 0 16px;line-height:1.7\">Draw a side view of the enclosure rather than relying on a front-panel CAD circle. Add the manufacturer\u2019s maximum depth from its mechanical drawing, then add the selected terminal and a conservative harness path required by the wiring method. Where a neighboring contact block, terminal rail, PCB, door, or cable duct occupies the same zone, move the device or change the documented configuration before fabrication.<\/p>\n<table style=\"width:100%;border-collapse:collapse\">\n<thead>\n<tr>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">Rear-envelope item<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">What to request or measure<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">Why it changes selection<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Body depth<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Dimension from panel rear face to deepest body feature<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Determines clearance to rails, boards, and doors<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Retaining method<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Nut, bracket, anti-rotation feature, and tool access<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">A workable hole may still be impossible to tighten<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Terminal direction<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Rear, side, pin, screw, or lead exit<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Changes collision and wire-routing risk<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Harness bend<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Wire size, insulation, connector, and minimum bend route<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Prevents a tight bend directly at a termination<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Service path<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Space for retightening, testing, and replacement<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Keeps a production fit from becoming a maintenance problem<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"margin:0 0 16px;line-height:1.7\">Online Q&amp;A repeatedly uses the phrase \u201cbackside spacing to allow for wiring connections and clearances.\u201d That is the right design question, but it is not a substitute for the product drawing. Do not invent a universal rear-depth number for all 25mm buttons: body length and termination are configuration-dependent.<\/p>\n<h2 style=\"margin:42px 0 14px;scroll-margin-top:96px\" id=\"part-4-match-the-operation-to-the-command\">Part 4. Match the Operation to the Command<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7\">Momentary and latching describe what happens after actuation. A <strong>moment\u00e1neo<\/strong> push button returns when the actuator is released. A <strong>traba<\/strong> push button retains its changed state until the mechanism is actuated again. Choose the behavior from the command logic and the documented product configuration, not from the color or diameter of the button.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">A momentary action is normally evaluated for a temporary command or signal. A latching action is evaluated where the intended circuit logic needs a retained state. That high-level distinction is clear, yet the contact sequence, circuit diagram, LED behavior, and available configurations remain product-specific. Ask for the exact circuit function rather than merely writing \u201cstart button\u201d in an RFQ.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">Contact notation is another separate layer. <strong>NO<\/strong> means normally open and <strong>NC<\/strong> means normally closed in the stated normal condition; a notation such as 1NO1NC identifies one of each contact state. It does not by itself describe the terminal layout, wire entry, or whether an illuminated variant has a separate lamp circuit. Include the required contact count and state in the request.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">For a panel team choosing the visible construction as well as the interface, the <a style=\"color:#27649a;text-decoration:underline\" href=\"https:\/\/onpowbutton.com\/es\/news\/metal-vs-plastic-push-button-switches\/\">metal and plastic operator comparison<\/a> is useful reading. Material is still not a proxy for operation or contact configuration.<\/p>\n<h2 style=\"margin:42px 0 14px;scroll-margin-top:96px\" id=\"part-5-specify-contacts-terminals-and-front-conditions\">Part 5. Specify Contacts, Terminals, and Front Conditions<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7\">Specify the termination only after the physical layout and circuit drawing are available. Screw terminals, pins, solder lugs, leads, and connectors create different rear shapes and harness procedures. The manufacturer\u2019s drawing and exact part configuration are the evidence to use; a category page cannot establish that every member of a diameter family shares one terminal type.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">Use this short selection sequence:<\/p>\n<ol style=\"margin:0 0 18px 1.2em;line-height:1.7\">\n<li style=\"margin:0 0 8px\">State the normal contact requirement, for example one NO, one NC, or another documented arrangement.<\/li>\n<li style=\"margin:0 0 8px\">State whether operation is momentary or latching.<\/li>\n<li style=\"margin:0 0 8px\">State the desired terminal form and the wire or connector system it must accept.<\/li>\n<li style=\"margin:0 0 8px\">State whether illumination is required and provide lamp voltage, color, and control intent if applicable.<\/li>\n<li style=\"margin:0 0 8px\">State the front exposure and the protection target, while identifying which part of the assembly must meet it.<\/li>\n<\/ol>\n<p style=\"margin:0 0 16px;line-height:1.7\">IP and IK should not be merged into a vague \u201crugged\u201d description. IEC 60529 defines IP classification for enclosure protection, while IEC 62262 defines IK classification for external mechanical impact. A stated value has meaning only for the documented product portion and test condition. The machine enclosure, gasket compression, cable entry, and installation can all matter to the installed result.<\/p>\n<h2 style=\"margin:42px 0 14px;scroll-margin-top:96px\" id=\"part-6-route-a-25-requirement-to-onpow-evidence\">Part 6. Route a \u03c625 Requirement to ONPOW Evidence<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7\">For a confirmed \u03c625 interface, the <a style=\"color:#27649a;text-decoration:underline\" href=\"https:\/\/onpowbutton.com\/es\/metal-push-button-switch\/\">ONPOW GQ25 Series listing<\/a> is the appropriate first-party family route. ONPOW\u2019s metal push button category lists GQ25 Series with <strong>Panel Cutout Dimension \u03a625<\/strong>, <strong>Ui 250V<\/strong>, and <strong>Ith 5A<\/strong>. Use those exact fields as category-level evidence while asking ONPOW to confirm the selected configuration.<\/p>\n<figure style=\"margin:26px 0;text-align:center\"><img decoding=\"async\" style=\"max-width:640px;width:100%;height:auto;display:block;margin:0 auto;border-radius:8px\" alt=\"ONPOW push button kit for reviewing a product-family configuration before RFQ\" src=\"https:\/\/onpowbutton.com\/wp-content\/uploads\/2026\/06\/Push-Button-Switch-Kit-1.webp\" \/><\/figure>\n<p style=\"margin:0 0 16px;line-height:1.7\">This is a product recommendation for physical-interface discovery, not a claim that every GQ25 configuration has identical terminals, contacts, rear dimensions, or approvals. Ui and Ith are listed fields, not a complete application statement. A buyer who needs a specific load behavior, special function, or terminal arrangement needs model-level documentation and an application review.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">The ONPOW category also presents nearby families. Do not select a neighboring GQ25-L or LCA25 item simply because it shares the cutout. Use it only after the manufacturer confirms the requested configuration against the panel, circuit, and ordering details.<\/p>\n<h2 style=\"margin:42px 0 14px;scroll-margin-top:96px\" id=\"part-7-set-the-fit-boundary-and-build-the-rfq\">Part 7. Set the Fit Boundary and Build the RFQ<\/h2>\n<h3 style=\"margin:28px 0 12px\">Fit Boundary<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">This guide fits an OEM or panel builder who has a \u03c625 interface requirement or is free to design a \u03c625 opening and wants a disciplined selection path. It is not suitable as a substitute for a model drawing, a wiring diagram, an emergency-function assessment, an installed-enclosure evaluation, or a declared operating-duty statement.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">Do not use this guide to choose a 25mm unit where the panel is already \u03c622 or \u03c630 without an approved mechanical solution. Do not use category values to finalize a model where rear depth, terminal type, contact arrangement, illumination, environmental exposure, or circuit conditions remain unknown.<\/p>\n<h3 style=\"margin:28px 0 12px\">RFQ checklist<\/h3>\n<table style=\"width:100%;border-collapse:collapse\">\n<thead>\n<tr>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">RFQ input<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">Give ONPOW this information<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">Selection effect<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Panel interface<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Finished \u03c625 hole, tolerance, thickness, material, coating<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Confirms mounting fit<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Rear layout<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Allowed depth, adjacent parts, access side, harness route<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Confirms physical clearance<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Command logic<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Momentary or latching; required NO\/NC contacts<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Narrows the functional configuration<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Wiring<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Terminal preference, wire\/conductor details, connector constraints<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Checks termination and serviceability<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Indication<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Illumination need, lamp supply, color, marking<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Separates lamp requirements from contacts<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Environment<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Front exposure and required documented protection<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Keeps protection claims tied to the right product portion<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Commercial details<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Quantity, samples, target date, drawing revision<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Makes quotation and confirmation actionable<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"margin:0 0 16px;line-height:1.7\"><strong>Next step:<\/strong> review the <a style=\"color:#27649a;text-decoration:underline\" href=\"https:\/\/onpowbutton.com\/es\/category\/blog\/\">ONPOW control-panel selection articles<\/a>, compare the documented \u03c625 family route, then <a style=\"color:#27649a;text-decoration:underline\" href=\"https:\/\/onpowbutton.com\/es\/contact-us\/\">send a \u03c625 panel RFQ<\/a> with the checklist above. Confirm the exact drawing before punching a new panel or releasing a production purchase order.<\/p>\n<h2 style=\"margin:42px 0 14px;scroll-margin-top:96px\">Preguntas frecuentes<\/h2>\n<h3 style=\"margin:28px 0 12px\">What does 25mm mean on a push button?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">It normally identifies the panel mounting cutout or installation diameter when the manufacturer\u2019s drawing says so. Confirm the drawing because a button\u2019s visible face can be larger than its mounting body.<\/p>\n<h3 style=\"margin:28px 0 12px\">Can I replace a 22mm push button with a 25mm one?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">Not directly through the same hole. A \u03c625 body needs a \u03c625 interface, so retain the 22mm format or obtain a documented panel modification or approved adapter solution.<\/p>\n<h3 style=\"margin:28px 0 12px\">How much room is needed behind the panel?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">Use the exact product drawing, then allow for the body, retaining hardware, terminal, wire bend, and service access. There is no universal rear-depth number for every 25mm configuration.<\/p>\n<h3 style=\"margin:28px 0 12px\">Is a momentary or latching button better?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">Neither is universally better. Momentary action returns on release; latching action retains a changed state. Choose according to the documented circuit and intended command behavior.<\/p>\n<h3 style=\"margin:28px 0 12px\">What does 1NO1NC mean?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">It denotes one normally open and one normally closed contact in the specified normal condition. Check the product documentation for the exact terminal identification and circuit diagram.<\/p>\n<h3 style=\"margin:28px 0 12px\">Does a 25mm button have a screw terminal?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">It may or may not. Diameter alone does not establish a terminal style, so request the exact configuration and mechanical drawing before committing the harness layout.<\/p>\n<h3 style=\"margin:28px 0 12px\">Does an IP rating cover the whole machine?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">No. IP is a classification for the documented enclosure or protected portion. Confirm what the rating covers and evaluate the completed enclosure, seals, and cable entry separately.<\/p>\n<h3 style=\"margin:28px 0 12px\">Which ONPOW page should I use for a \u03c625 requirement?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">Begin with the ONPOW metal push button category, which lists GQ25 Series with a \u03a625 panel cutout. Ask ONPOW to confirm the exact configuration for your panel and circuit.<\/p>\n<h2 style=\"margin:42px 0 14px;scroll-margin-top:96px\">References<\/h2>\n<ul style=\"margin:0 0 18px 1.2em;line-height:1.7\">\n<li style=\"margin:0 0 8px\"><a style=\"color:#27649a;text-decoration:underline\" href=\"https:\/\/webstore.iec.ch\/en\/publication\/65935\" target=\"_blank\" rel=\"noopener\">IEC 60947-5-1: electromechanical control circuit devices<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a style=\"color:#27649a;text-decoration:underline\" href=\"https:\/\/webstore.iec.ch\/en\/publication\/2452\" target=\"_blank\" rel=\"noopener\">IEC 60529: IP Code<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a style=\"color:#27649a;text-decoration:underline\" href=\"https:\/\/webstore.iec.ch\/en\/publication\/71109\" target=\"_blank\" rel=\"noopener\">IEC 62262: IK Code<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a style=\"color:#27649a;text-decoration:underline\" href=\"https:\/\/www.rjselectronics.com\/products\/rjs203-25a-f67q\/\" target=\"_blank\" rel=\"noopener\">RJS 25mm panel-cutout product example<\/a><\/li>\n<\/ul>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>A 25mm push button switch is the right starting point when the panel drawing calls for a \u03c625 mounting hole. Select it from that physical interface outward: verify the finished cutout and panel thickness, reserve room behind the panel, then choose operation, contacts, terminals, and any illumination. The face can be wider than 25mm, so [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":1938,"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-2143","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\/06\/Push-Button-Switch-Kit-Cover-image.webp",2560,1712,false],"thumbnail":["https:\/\/onpowbutton.com\/wp-content\/uploads\/2026\/06\/Push-Button-Switch-Kit-Cover-image-150x150.webp",150,150,true],"medium":["https:\/\/onpowbutton.com\/wp-content\/uploads\/2026\/06\/Push-Button-Switch-Kit-Cover-image-300x201.webp",300,201,true],"medium_large":["https:\/\/onpowbutton.com\/wp-content\/uploads\/2026\/06\/Push-Button-Switch-Kit-Cover-image-768x514.webp",768,514,true],"large":["https:\/\/onpowbutton.com\/wp-content\/uploads\/2026\/06\/Push-Button-Switch-Kit-Cover-image-1024x685.webp",1024,685,true],"1536x1536":["https:\/\/onpowbutton.com\/wp-content\/uploads\/2026\/06\/Push-Button-Switch-Kit-Cover-image-1536x1027.webp",1536,1027,true],"2048x2048":["https:\/\/onpowbutton.com\/wp-content\/uploads\/2026\/06\/Push-Button-Switch-Kit-Cover-image-2048x1370.webp",2048,1370,true],"trp-custom-language-flag":["https:\/\/onpowbutton.com\/wp-content\/uploads\/2026\/06\/Push-Button-Switch-Kit-Cover-image-18x12.webp",18,12,true]},"uagb_author_info":{"display_name":"Relife","author_link":"https:\/\/onpowbutton.com\/es\/author\/relife\/"},"uagb_comment_info":0,"uagb_excerpt":"A 25mm push button switch is the right starting point when the panel drawing calls for a \u03c625 mounting hole. Select it from that physical interface outward: verify the finished cutout and panel thickness, reserve room behind the panel, then choose operation, contacts, terminals, and any illumination. The face can be wider than 25mm, so&hellip;","_links":{"self":[{"href":"https:\/\/onpowbutton.com\/es\/wp-json\/wp\/v2\/posts\/2143","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/onpowbutton.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/onpowbutton.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/onpowbutton.com\/es\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/onpowbutton.com\/es\/wp-json\/wp\/v2\/comments?post=2143"}],"version-history":[{"count":1,"href":"https:\/\/onpowbutton.com\/es\/wp-json\/wp\/v2\/posts\/2143\/revisions"}],"predecessor-version":[{"id":2144,"href":"https:\/\/onpowbutton.com\/es\/wp-json\/wp\/v2\/posts\/2143\/revisions\/2144"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/onpowbutton.com\/es\/wp-json\/wp\/v2\/media\/1938"}],"wp:attachment":[{"href":"https:\/\/onpowbutton.com\/es\/wp-json\/wp\/v2\/media?parent=2143"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/onpowbutton.com\/es\/wp-json\/wp\/v2\/categories?post=2143"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/onpowbutton.com\/es\/wp-json\/wp\/v2\/tags?post=2143"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}