{"id":2162,"date":"2026-10-26T19:10:00","date_gmt":"2026-10-26T11:10:00","guid":{"rendered":"https:\/\/lemaele.com\/blog\/switch-material-declaration-iec62474\/"},"modified":"2026-10-25T12:03:47","modified_gmt":"2026-10-25T04:03:47","slug":"switch-material-declaration-iec62474","status":"publish","type":"post","link":"https:\/\/lemaele.com\/pt\/blog\/switch-material-declaration-iec62474\/","title":{"rendered":"Switch Material Declarations: Request Usable IEC 62474 Data"},"content":{"rendered":"<style>.lema-article{max-width:100%;min-width:0}.lema-article img{max-width:100%;height:auto}.lema-article table{border-collapse:collapse;min-width:580px}.lema-article th,.lema-article td{border:1px solid #ddd;padding:10px;text-align:left;vertical-align:top}<\/style>\n<div class=\"lema-article\">\n<p>A switch material declaration prepared for an IEC 62474 request needs a defined product identity, an agreed reporting scope and usable substance information. A generic statement that a switch is environmentally compliant may not contain the data a customer needs to process. Before asking the supplier to complete a file, specify the required format and edition, the reference-list version, the ordered configuration and the expected declaration type. Then check both the file&#8217;s structure and the meaning of its contents. Passing a format check does not establish that the material information is complete or correct.<\/p>\n<p>The <a href=\"https:\/\/lemaele.com\/product\/kw7-series-micro-switch\/\">LEMA KW7 micro switch<\/a> is the product example for this purchasing workflow. The article does not claim that an IEC 62474 XML declaration already exists for every KW7 option. Request the available data for the exact part, identify any missing fields and agree how they will be resolved. Product photographs help identify the item but cannot establish its substance composition.<\/p>\n<h2>Define the receiving system before creating another spreadsheet<\/h2>\n<p>Begin with the customer&#8217;s actual request. Ask whether it needs an IEC 62474 declaration, an IPC-1752 format or a customer-specific worksheet. Record the accepted revision or schema version and the validation method. Sending a large amount of information in an incompatible format can leave both parties repeating work while the original request remains unanswered.<\/p>\n<p><a href=\"https:\/\/tc111.iec.ch\/tc-activity\/material-declaration\/\" rel=\"noopener\" target=\"_blank\">IEC&#8217;s material-declaration overview<\/a> describes a common format for reporting and exchanging material and substance information. It distinguishes compliance and composition declarations within its described framework. Use the edition and requirements agreed for your request rather than assuming that the title of a standard alone defines every field, reporting depth or customer acceptance rule.<\/p>\n<h2>Separate a statement from a structured declaration<\/h2>\n<p>A short supplier letter can identify an assessment and its conclusion. A structured declaration serves a different operational purpose: it allows defined information to move between supply-chain systems. Neither should be renamed to imply that it contains information it does not actually provide. Ask the customer which decision or downstream process the response must support.<\/p>\n<p>For the broader distinction between environmental requests, use the <a href=\"https:\/\/lemaele.com\/blog\/switch-rohs-reach-compliance\/\">switch RoHS and REACH evidence guide<\/a>. This article concentrates on how to request, organize and check the data file. The reporting format does not replace the applicable legal assessment, and a legal conclusion should not be invented merely because a software tool can generate a completed-looking document.<\/p>\n<h2>Lock the part identity and declaration boundary<\/h2>\n<p>Use the full manufacturer order code and the relevant drawing revision. State whether the request covers a bare switch or an assembly containing leads, connectors, terminals or other additions. Ask the supplier to confirm the scope before collecting data. If custom options are included, explain them with an identified drawing rather than an informal description that can be interpreted several ways.<\/p>\n<p>The <a href=\"https:\/\/lemaele.com\/blog\/oem-custom-micro-switch-rfq-checklist\/\">micro switch RFQ checklist<\/a> helps establish that identity. Reuse the same identifiers in the materials request so engineering, purchasing and compliance do not maintain conflicting names for the same part. Where the supplier uses another code internally, obtain a controlled cross-reference that makes the relationship clear.<\/p>\n<figure><img decoding=\"async\" src=\"https:\/\/lemaele.com\/wp-content\/uploads\/2026\/10\/lema-switch-material-declaration-iec62474-body1-20261025.webp\" alt=\"KW7 roller-lever sample kept in a separate identity-review tray\" width=\"1536\" height=\"1024\" loading=\"lazy\" title=\"\"><figcaption>KW7 roller-lever sample kept in a separate identity-review tray. Product-reference illustration; not a certification, laboratory result or approved installation.<\/figcaption><\/figure>\n<h2>Agree which declaration type the customer needs<\/h2>\n<p>A response about whether listed substances are present above applicable reporting thresholds is different from a hierarchical description of the materials and substances in a product. Ask which level of information is required. Do not promise a full composition response merely because a supplier can answer a narrower list-based question.<\/p>\n<p>The reference list and its version belong in this discussion. A true or false response loses meaning if the recipient cannot determine which substance entry, threshold basis or list was used. Where the source information is incomplete, preserve that status and request clarification. Unknown should not be converted to absent simply to satisfy a required software field.<\/p>\n<h2>Build a request with explicit acceptance checks<\/h2>\n<div class=\"lema-table\" style=\"max-width:100%;overflow-x:auto\">\n<table>\n<thead>\n<tr>\n<th scope=\"col\">Request field<\/th>\n<th scope=\"col\">What to agree<\/th>\n<th scope=\"col\">Acceptance question<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Part boundary<\/td>\n<td>Complete order code, revision and included accessories<\/td>\n<td>Does the response cover the item actually purchased?<\/td>\n<\/tr>\n<tr>\n<td>Format<\/td>\n<td>Named standard, agreed version and receiving tool<\/td>\n<td>Can the recipient process the submitted file?<\/td>\n<\/tr>\n<tr>\n<td>Reporting scope<\/td>\n<td>Required declaration type and reference-list basis<\/td>\n<td>Is the expected information actually present?<\/td>\n<\/tr>\n<tr>\n<td>Data status<\/td>\n<td>Supported information and explicit unknowns<\/td>\n<td>Were gaps preserved instead of converted to absence?<\/td>\n<\/tr>\n<tr>\n<td>Maintenance<\/td>\n<td>Change triggers, owner and superseded records<\/td>\n<td>Can a later reviewer reconstruct the accepted evidence?<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>This table is a practical handoff checklist rather than a reproduction of the standard&#8217;s schema. Confirm the actual required fields and data rules with the agreed format and receiving system. Add a named owner and due date to unresolved questions. That makes it possible to separate a missing identifier from missing substance information and resolve the right issue first.<\/p>\n<p>Avoid changing product identity while a request is open. If the supplier proposes another construction, decide whether the existing declaration request still applies or needs revision. An updated quotation should not silently redirect the materials review to a different part while the customer believes the original configuration is being assessed.<\/p>\n<h2>Check file structure before reviewing the conclusion<\/h2>\n<p>A structured file should be checked with the agreed schema or receiving tool. Record the tool, version and result used for that check. A readable file is not necessarily a valid submission, and a syntactically valid file is not necessarily correct evidence. Keep those decisions separate so a successful import is not mistaken for final approval.<\/p>\n<p><a href=\"https:\/\/www.ipc.org\/materials-declaration-data-exchange-standards-homepage\" rel=\"noopener\" target=\"_blank\">IPC&#8217;s materials-declaration exchange guidance<\/a> describes its own reporting formats and schema-based exchange. An IPC response can be useful where the customer accepts it, but it should not be relabeled as another format without checking the requirements. Confirm any conversion method and verify that identifiers, scope and substance meaning survive the conversion.<\/p>\n<h2>Review meaning and evidence after the file imports<\/h2>\n<p>Compare the declared product identity with the ordered configuration. Check that dates, reference versions and supplier details are present and internally consistent. Review whether the declared boundary matches the part or assembly requested. If the supplier lists only a family, ask how the ordered option is included. Do not infer composition from a family photograph or an electrical rating table.<\/p>\n<p>Where quantities or hierarchical relationships are reported, ask the responsible reviewer to assess their consistency within the selected declaration type. Avoid imposing a simplistic completeness rule that was never part of the request. A limited disclosure and a full composition response can have different intended scopes. The important point is to know what has been supplied and whether it satisfies the customer&#8217;s defined need.<\/p>\n<figure><img decoding=\"async\" src=\"https:\/\/lemaele.com\/wp-content\/uploads\/2026\/10\/lema-switch-material-declaration-iec62474-body2-20261025.webp\" alt=\"KW7 switch beside a closed empty sample vial; no composition test is shown\" width=\"1536\" height=\"1024\" loading=\"lazy\" title=\"\"><figcaption>KW7 switch beside a closed empty sample vial; no composition test is shown. Product-reference illustration; not a certification, laboratory result or approved installation.<\/figcaption><\/figure>\n<h2>Keep source evidence linked without exposing it indiscriminately<\/h2>\n<p>Store the supplier response with its supporting references and any clarifications. Record who supplied the information and which product configuration it represents. Limit distribution according to the legitimate needs of the project and any applicable confidentiality agreement. A customer-facing summary should preserve the meaning and limitations of the source rather than replacing unknown fields with reassuring language.<\/p>\n<p>For repeat purchases, link the data to the accepted part record and the relevant delivery information. The <a href=\"https:\/\/lemaele.com\/blog\/micro-switch-lot-traceability\/\">lot traceability guide<\/a> explains how product identity can remain connected through purchasing and receipt. That traceability helps determine which materials information was considered when a particular configuration was released.<\/p>\n<h2>Define update triggers and exception handling<\/h2>\n<p>A material declaration needs a maintenance process. Specify what happens when the product construction changes, a relevant reference list is updated or the customer changes its reporting requirement. Use the <a href=\"https:\/\/lemaele.com\/blog\/switch-supplier-change-notification\/\">supplier change-notification guide<\/a> to organize the handoff. The appropriate response may be an updated declaration or a documented review of why the existing information remains applicable.<\/p>\n<p>Keep superseded files identifiable. If a response is incomplete, record the missing information, the affected configuration and the next action rather than circulating an apparently final file. Where a customer accepts a limited response, retain that acceptance and its scope. This makes the record usable during later orders and prevents unresolved questions from disappearing when staff or systems change.<\/p>\n<h2>Further learning: information through the supply chain<\/h2>\n<p>The following ECHA presentation discusses tracking hazardous-substance information through the supply chain. It supports the need for clear product identity and communication. It is not a tutorial for a specific IEC XML schema and does not establish the composition or compliance of any LEMA model. Use the agreed standard and receiving system for format validation.<\/p>\n<p>EUchemicals: How to track hazardous substances in the supply chain &#8211; Kevin Pollard, ECHA<\/p>\n<div style=\"position:relative;width:100%;aspect-ratio:16\/9\"><iframe style=\"position:absolute;inset:0;width:100%;height:100%;border:0\" src=\"https:\/\/www.youtube-nocookie.com\/embed\/8S6fXgmJKEQ\" title=\"How to track hazardous substances in the supply chain - Kevin Pollard, ECHA\" loading=\"lazy\" allow=\"accelerometer; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen><\/iframe><\/div>\n<p><a rel=\"noopener\" href=\"https:\/\/www.youtube.com\/watch?v=8S6fXgmJKEQ\" target=\"_blank\">Watch How to track hazardous substances in the supply chain &#8211; Kevin Pollard, ECHA<\/a>.<\/p>\n<h2>Frequently asked questions<\/h2>\n<h3>Is a generic environmental letter an IEC 62474 data file?<\/h3>\n<p>Not necessarily. A letter can communicate a limited statement while a structured declaration supports defined data exchange. Ask which format and information the receiving customer requires rather than relabeling the existing document.<\/p>\n<h3>Does successful XML validation prove the switch is compliant?<\/h3>\n<p>No. Structure validation and assessment of the information are separate steps. Confirm product identity, reporting scope, evidence and applicable requirements after checking that the file can be processed.<\/p>\n<h3>Should missing substance information be entered as absent?<\/h3>\n<p>No. Preserve the unknown status and resolve it with the responsible supplier or reviewer. A mandatory software field is not evidence that the substance is absent from the supplied product.<\/p>\n<h3>Can one declaration automatically cover custom switch assemblies?<\/h3>\n<p>Do not assume it can. Define whether the request includes added leads, connectors or other options and obtain a clear supplier scope statement tied to the complete ordered configuration.<\/p>\n<\/div>\n<p><script type=\"application\/ld+json\">{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Is a generic environmental letter an IEC 62474 data file?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Not necessarily. A letter can communicate a limited statement while a structured declaration supports defined data exchange. Ask which format and information the receiving customer requires rather than relabeling the existing document.\"}}, {\"@type\": \"Question\", \"name\": \"Does successful XML validation prove the switch is compliant?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. Structure validation and assessment of the information are separate steps. 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