{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA9012-5BQ42","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA9012-5BQ42","canonicalUrl":"https://aoctrl.com/siemens/3RA9012-5BQ42","factsUrl":"https://aoctrl.com/api/mcp/products/3RA9012-5BQ42","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3RA9012-5BQ42 GM-SET pushbutton, mushroom head, illuminated amber, push-pull, 1NO, 3NC, Cage Clamp connection.","salesMarkdown":"## What this pushbutton does in a motor starter line The Siemens 3RA9012-5BQ42 is a GM-SET pushbutton assembly — a mushroom-head, illuminated amber, push-pull operator with 1 normally-open and 3 normally-closed contacts, terminated via Cage Clamp connection. It is catalogued under Motor Starters, meaning it serves as a control-station component for starting, stopping, or emergency-off functions on a motor circuit. ## Contact configuration and termination The 1NO + 3NC contact arrangement gives you one make contact for a start signal and three break contacts for redundant stop or safety interlock paths — typical for an E-stop station where multiple NC channels feed into a safety relay or PLC input. Cage Clamp termination means the wires are held by a spring clamp, not a screw — no re-torquing after thermal cycling, and the connection stays gas-tight under vibration common on a panel door or machine frame.","metaTitle":"Siemens 3RA9012-5BQ42 Pushbutton, Mushroom, Amber, 1NO 3NC","metaDescription":"Siemens 3RA9012-5BQ42 GM-SET pushbutton, mushroom head, illuminated amber, push-pull, 1NO 3NC, Cage Clamp. Current lifecycle stage. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Motor Starters"],"specifications":{"title":"3RA9012-5BQ42","description":"GM-SET / ITEM NUMBER 12272 PUSHBUTTON, MUSHROOM, ILLUMINAT AMBER, PUSH-PULL, 1NO, 3NC, CAGE CLAMP CONNECTION CONSISTING OF:","lifecycle_stage":"current"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/cee68187496abb5d1858f09afb7932b5.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=110102&mlfb=3RA9012-5BQ42"},"ai":{"faq":[{"question":"What is the contact configuration of 3RA9012-5BQ42?","answer":"The 3RA9012-5BQ42 has 1 normally-open (NO) and 3 normally-closed (NC) contacts, terminated via Cage Clamp spring-clamp connections."},{"question":"What does the description GM-SET / ITEM NUMBER 12272 mean for 3RA9012-5BQ42?","answer":"GM-SET refers to a Siemens pushbutton operator assembly; ITEM NUMBER 12272 is the internal Siemens identifier for this specific mushroom-head, illuminated amber, push-pull configuration with 1NO+3NC contacts and Cage Clamp termination."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA9012-5BQ42","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/3RA9012-5BQ42 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}