{"id":4273,"date":"2026-11-03T02:00:00","date_gmt":"2026-11-03T02:00:00","guid":{"rendered":"https:\/\/onpowbutton.com\/news\/push-button-terminal-robustness-report\/"},"modified":"2026-11-02T04:34:58","modified_gmt":"2026-11-02T04:34:58","slug":"push-button-terminal-robustness-report","status":"publish","type":"post","link":"https:\/\/onpowbutton.com\/ja\/news\/push-button-terminal-robustness-report\/","title":{"rendered":"\u30d7\u30c3\u30b7\u30e5\u30dc\u30bf\u30f3\u7aef\u5b50\u306e\u5805\u7262\u6027\u30ec\u30dd\u30fc\u30c8\uff1a\u8cfc\u5165\u8005\u304c\u78ba\u8a8d\u3059\u3079\u304d\u70b9"},"content":{"rendered":"<style>.onpow-article{font-size:17px;line-height:1.75;overflow-wrap:anywhere}.onpow-article img{max-width:100%;height:auto}.onpow-article figure{margin:28px 0}.onpow-article figcaption{font-size:14px;color:#555}.onpow-table-scroll{max-width:100%;overflow-x:auto}.onpow-article table{border-collapse:collapse;min-width:640px;width:100%}.onpow-article th,.onpow-article td{padding:12px;border:1px solid #ddd;text-align:left}.onpow-article th{background:#f1f4f7}.onpow-video{position:relative;aspect-ratio:16\/9;width:100%}.onpow-video iframe{position:absolute;width:100%;height:100%;border:0}<\/style>\n<article class=\"onpow-article\">\n<nav aria-label=\"Contents\"><strong>Contents<\/strong><\/p>\n<ul>\n<li><a href=\"#section-1\">Decide which mechanical interface the report covers<\/a><\/li>\n<li><a href=\"#section-2\">Understand the role of IEC 60068-2-21<\/a><\/li>\n<li><a href=\"#section-3\">Build a report review table<\/a><\/li>\n<li><a href=\"#section-4\">Match the specimen to the ordered switch<\/a><\/li>\n<li><a href=\"#section-5\">Read the load direction and fixture description<\/a><\/li>\n<li><a href=\"#section-6\">Separate terminal integrity from conductor retention<\/a><\/li>\n<li><a href=\"#section-7\">Compare initial and final observations<\/a><\/li>\n<li><a href=\"#section-8\">Handle damage found during receiving<\/a><\/li>\n<li><a href=\"#section-9\">Prepare a focused request for quotation<\/a><\/li>\n<li><a href=\"#section-10\">Frequently asked questions<\/a><\/li>\n<\/ul>\n<\/nav>\n<p>A push button terminal robustness report should identify the exact terminal construction, the mechanical loading method, the specimen support and the checks made before and after loading. A statement that a switch is \u201cstrong\u201d does not answer these questions. For a panel builder, the useful outcome is evidence that the supplied termination matches the qualified design and remains suitable for its specified assembly process. This guide explains how to review that evidence without turning a laboratory test into an improvised pull, bend or torque test on production switches.<\/p>\n<h2 id=\"section-1\">Decide which mechanical interface the report covers<\/h2>\n<p>A panel push button has several interfaces that can experience force. The mounting nut retains the body in the panel. A terminal screw clamps a conductor or an approved termination. The terminal itself is retained within the switch structure. A cable support transfers harness movement to the enclosure. These interfaces interact during assembly, but evidence for one does not automatically establish the performance of the others.<\/p>\n<p>Start a review by marking the interface under discussion on the supplier drawing. If the report describes the retention of a terminal in a molded rear block, do not file it as proof of cable strain relief. If it describes a conductor connection, do not assume it covers the mounting thread. This simple separation prevents an impressive mechanical result from being applied to the wrong purchasing requirement.<\/p>\n<p>For background on assembly choices, see the <a href=\"https:\/\/onpowbutton.com\/news\/push-button-switch-wiring-and-installation-guide\/\">push button wiring and installation guide<\/a>. The present review concerns evidence about mechanical termination integrity, rather than a general wiring procedure.<\/p>\n<h2 id=\"section-2\">Understand the role of IEC 60068-2-21<\/h2>\n<p>The official <a href=\"https:\/\/webstore.iec.ch\/en\/publication\/59705\" rel=\"noopener\" target=\"_blank\">IEC 60068-2-21:2021 overview<\/a> addresses robustness of terminations and integral mounting devices subject to stresses during normal assembly or handling. It provides a reference framework; its title alone is not evidence that a particular switch has undergone an applicable test.<\/p>\n<p>Ask the supplier which method was selected, why it applies to the termination and which product specification supplied the acceptance requirements. A report should name its standard edition and any departures. A reference to a different terminal family, a different rear block or an earlier construction needs a documented applicability review before it can support the current order.<\/p>\n<p>This article does not reproduce laboratory procedures or prescribe universal loads, durations, tightening torques or sample quantities. Those values belong in the applicable specification and approved laboratory plan. A buyer can evaluate whether these details are present without inventing replacement limits.<\/p>\n<figure><img decoding=\"async\" alt=\"LAS1GQ rear terminals beside an unconnected cable and ferrule sample\" height=\"1024\" loading=\"lazy\" src=\"https:\/\/onpowbutton.com\/wp-content\/uploads\/2026\/11\/push-button-terminal-robustness-report-body1-daily20261102.png\" width=\"1536\"\/><figcaption>Product-referenced illustration for an engineering review. Separate props do not show an approved test setup, measured performance or product certification.<\/figcaption><\/figure>\n<h2 id=\"section-3\">Build a report review table<\/h2>\n<p>Use the following table as a purchasing review aid. Its entries are recommended document checks, not numerical acceptance limits from a standard.<\/p>\n<div class=\"onpow-table-scroll\">\n<table>\n<thead>\n<tr>\n<th>Review item<\/th>\n<th>Evidence to request<\/th>\n<th>Reason to hold acceptance<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Product identity<\/td>\n<td>Full order code, drawing revision and terminal option<\/td>\n<td>Report identifies only a series name<\/td>\n<\/tr>\n<tr>\n<td>Loaded interface<\/td>\n<td>Marked drawing or specimen photograph<\/td>\n<td>Unclear whether load acts on terminal, wire or mounting body<\/td>\n<\/tr>\n<tr>\n<td>Method<\/td>\n<td>Applicable test designation, edition and approved conditions<\/td>\n<td>Only \u201cmechanical test passed\u201d is stated<\/td>\n<\/tr>\n<tr>\n<td>Support<\/td>\n<td>Fixture description and restrained surfaces<\/td>\n<td>Fixture may bypass the interface being assessed<\/td>\n<\/tr>\n<tr>\n<td>Initial condition<\/td>\n<td>Relevant visual and functional observations<\/td>\n<td>Existing specimen damage is not recorded<\/td>\n<\/tr>\n<tr>\n<td>Final condition<\/td>\n<td>Results against defined acceptance requirements<\/td>\n<td>No explanation of deformation or electrical checks<\/td>\n<\/tr>\n<tr>\n<td>Traceability<\/td>\n<td>Sample identification and link to production design<\/td>\n<td>Tested version cannot be linked to the delivered option<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>Assign each open item to a named owner. Purchasing should know whether a missing photograph is a documentation query or whether an unidentified terminal option prevents acceptance. A concise open-item list is easier to resolve than an email saying the whole report is inadequate.<\/p>\n<h2 id=\"section-4\">Match the specimen to the ordered switch<\/h2>\n<p>Compare more than the visible push face. Two buttons can share a bezel and actuator while using different rear contacts, terminal materials or connection arrangements. Check the complete ordering suffix, the current drawing and the bill-of-material relationship that the supplier is prepared to confirm. Ask for a written mapping when a report covers a family of products.<\/p>\n<p>The <a href=\"https:\/\/onpowbutton.com\/19mmstainless-steelring-ledscrew-terminal-product\/\">LAS1GQ-11E\/L\/S product page<\/a> provides a real ONPOW example for discussing a screw-terminal construction. Its product photograph helps identify visible features. It does not establish a pull-force rating, internal retention method or IEC qualification. Request the current product-specific drawing and supporting evidence for the exact order.<\/p>\n<p>Where an illuminated option adds terminals or changes the rear assembly, check whether the report includes that configuration. Do not decide coverage from the number of screws visible in an angled photograph. A drawing and a clear supplier statement are more reliable than visual guesswork.<\/p>\n<h2 id=\"section-5\">Read the load direction and fixture description<\/h2>\n<p>A result makes sense only in relation to how the specimen was supported and where the load was applied. Consider a report photograph in which a fixture grips a terminal immediately beside its entry into the housing. Before accepting the result, ask whether that support represents the intended method or shields a feature that the assessment should include. This is a review question for the laboratory, not proof that the test is invalid.<\/p>\n<p>Similarly, a force applied along a terminal axis differs from one applied through a long cable at an angle. A cable can create leverage that is not apparent in a close photograph of the switch. Request sufficient views to understand the geometry and the identification of the loaded feature.<\/p>\n<p>Record units and directions exactly as supplied. If a force, bending action and tightening torque appear in the same document, keep their results in separate fields. Do not compare unlike measurements or convert a torque result into an allowable cable pull.<\/p>\n<figure><img decoding=\"async\" alt=\"LAS1GQ switch beside a separate inspection tray and magnifying loupe\" height=\"1024\" loading=\"lazy\" src=\"https:\/\/onpowbutton.com\/wp-content\/uploads\/2026\/11\/push-button-terminal-robustness-report-body2-daily20261102.png\" width=\"1536\"\/><figcaption>Product-referenced illustration for an engineering review. Separate props do not show an approved test setup, measured performance or product certification.<\/figcaption><\/figure>\n<h2 id=\"section-6\">Separate terminal integrity from conductor retention<\/h2>\n<p>A sound terminal can still have an unsuitable conductor connection. Conversely, a securely clamped wire does not establish that the terminal is retained correctly inside the switch. Review these questions separately and link each answer to the relevant instruction or report.<\/p>\n<p>The <a href=\"https:\/\/onpowbutton.com\/news\/screw-vs-solder-push-button-terminals\/\">comparison of screw and solder push button terminals<\/a> explains why the assembly process matters. The <a href=\"https:\/\/onpowbutton.com\/news\/wire-ferrules-push-button-terminals\/\">wire ferrule compatibility guide<\/a> addresses the conductor preparation question. Neither should be used to infer an unlisted force or torque for the termination.<\/p>\n<p>For an incoming batch, ask whether the approved process uses bare conductors, ferrules or another specified termination. A qualification with one arrangement should not silently authorize a different one. If the intended connection differs, obtain the supplier&#8217;s assessment before the assembly team treats the original evidence as transferable.<\/p>\n<h2 id=\"section-7\">Compare initial and final observations<\/h2>\n<p>A useful result describes what was examined before loading and what changed afterward. Depending on the approved plan, relevant observations may include terminal displacement, cracking, loosening, contact operation or other defined electrical checks. Ask for the recorded results and the criteria used to judge them, rather than assuming that every visible mark is either harmless or a failure.<\/p>\n<p>If a report says \u201cno damage,\u201d establish what the inspection could detect. A low-resolution overview may not resolve a small crack near a rear insert. Conversely, a cosmetic fixture mark may have no bearing on the stated acceptance requirement. The reviewer should request clarification tied to the function of the part, not demand an unexplained perfect appearance.<\/p>\n<p>Do not add a new electrical test to the receiving process without approval. The <a href=\"https:\/\/www.hse.gov.uk\/electricity\/faq.htm\" rel=\"noopener\" target=\"_blank\">HSE electrical safety guidance<\/a> emphasizes appropriate competence and safe work arrangements. Mechanical evidence review does not authorize live testing, insulation testing or dismantling by unqualified personnel.<\/p>\n<h2 id=\"section-8\">Handle damage found during receiving<\/h2>\n<p>When a terminal arrives bent or its rear block is cracked, preserve the packaging and photograph the condition before attempting repair. Link the item to its batch, delivery record and sample identifier. The immediate question is whether the damage arose during transport, assembly or a product issue; a qualification report cannot answer that from a distance.<\/p>\n<p>Quarantine questionable parts under the organization&#8217;s quality procedure and ask the supplier for disposition. Straightening a terminal may hide evidence and create an unknown condition. Do not rework it merely because the contact still operates. A functional check alone may miss damage relevant to mechanical retention or insulation spacing.<\/p>\n<p>The supplier response should distinguish replacement, authorized rework and investigation. Keep the report review separate from the incident record, but cross-reference them when the incident raises a question about the qualified design or the packaging arrangement.<\/p>\n<h2 id=\"section-9\">Prepare a focused request for quotation<\/h2>\n<p>State the complete order code, terminal arrangement, assembly process, conductor preparation and expected handling environment. Request the relevant current drawing, installation instructions and available mechanical termination evidence. Describe any unusual assembly constraint, such as restricted rear access, instead of asking generally for a \u201cheavy-duty terminal.\u201d<\/p>\n<p>Ask the supplier to identify exclusions. A clear statement that a report covers a terminal option but not a proposed harness arrangement is useful engineering information. It allows the panel builder to plan the missing evaluation before tooling or production quantities are committed.<\/p>\n<p>Before closing the review, check that the accepted documents are attached to the purchase record and that assembly personnel receive the correct instructions. A report saved in an isolated email does little to prevent the wrong terminal variant being substituted on a later order.<\/p>\n<h2 id=\"section-10\">Frequently asked questions<\/h2>\n<h3>Does a terminal robustness report specify the installation torque?<\/h3>\n<p>Not automatically. A report may assess a defined mechanical loading condition, while installation torque belongs in the applicable product instructions. Use the value approved for the exact terminal and connection arrangement; do not derive it from another test result.<\/p>\n<h3>Can a cable pull check replace termination qualification?<\/h3>\n<p>No. Pulling an assembled cable can involve conductor clamping, harness support and leverage as well as terminal retention. Treat it only as the specific approved assembly check it represents, rather than a substitute for qualification of the terminal construction.<\/p>\n<h3>Is a report for the same switch series sufficient?<\/h3>\n<p>Only when its applicability to the ordered configuration is established. Check terminal type, rear assembly, drawing revision and any supplier-defined family coverage. A common front appearance is insufficient evidence of identical mechanical construction.<\/p>\n<h3>What should a buyer request from ONPOW?<\/h3>\n<p>Provide the exact switch option and assembly requirements, then request the current drawing, terminal instructions and available applicable evidence. Ask ONPOW to identify the supported configuration and any additional evaluation needed for the proposed installation.<\/p>\n<h2 id=\"learning-video\">Further learning<\/h2>\n<p>The Efficient Engineer explains how external loading produces internal stress and deformation. This helps distinguish terminal loading from cable retention; it is not an IEC termination-test procedure or a qualification of this switch.<\/p>\n<div class=\"onpow-video\"><iframe src=\"https:\/\/www.youtube-nocookie.com\/embed\/aQf6Q8t1FQE\" title=\"An Introduction to Stress and Strain\" loading=\"lazy\" allow=\"encrypted-media; picture-in-picture\" allowfullscreen><\/iframe><\/div>\n<p><a rel=\"noopener\" href=\"https:\/\/www.youtube.com\/watch?v=aQf6Q8t1FQE\" target=\"_blank\">An Introduction to Stress and Strain \u2014 The Efficient Engineer<\/a><\/p>\n<\/article>\n<p><script type=\"application\/ld+json\">{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Does a terminal robustness report specify the installation torque?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Not automatically. 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