{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV6921-1M","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV6921-1M","canonicalUrl":"https://aoctrl.com/siemens/3RV6921-1M","factsUrl":"https://aoctrl.com/api/mcp/products/3RV6921-1M","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RV6921-1M short-circuit signalling switch, for 3RV6 motor circuit breakers size S00, S0, screw-type terminals, snap-on mounting, 690 V rated, 19 x 90 x 68 mm.","salesMarkdown":"The Siemens 3RV6921-1M is a SIRIUS short-circuit signalling switch designed to snap onto 3RV6 motor circuit breakers in sizes S00 and S0. The switch breaks the circuit in a maximum of 20 ms when a short-circuit trip occurs, giving you a discrete signal that the breaker has operated on a fault rather than an overload. This signalling switch snaps directly onto the side of a 3RV6 circuit breaker — no DIN rail footprint of its own, no extra panel space beyond the breaker's own width. It's sized for the S00 and S0 frame sizes, which covers the 3RV6 range from the smallest motor-protective breaker up through the 25 A class. The 19 mm width means it sits flush against the breaker body; you don't lose a DIN slot.","metaTitle":"Siemens 3RV6921-1M SIRIUS Signalling Switch, 690 V, 19 mm","metaDescription":"Siemens 3RV6921-1M SIRIUS short-circuit signalling switch for 3RV6 motor circuit breakers. Snap-on mounting, screw terminals, rated 690 V. Current production. Available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Motor Protection Circuit Breakers (MPCB)"],"specifications":{"Depth":"68 mm","Width":"19 mm","Height":"90 mm","Rated Value":"690 V","During Storage":"-50 ... +80 °C","Leading Contact":"0","lifecycle_stage":"current","During Operation":"-20 ... +60 °C","Fastening Method":"snap-on mounting","Break Time Maximum":"20 ms","Product Brand Name":"SIRIUS","Degree Of Pollution":"3","Product Designation":"Short-circuit signaling switch","Suitability For Use":"motor circuit breaker","Design Of The Product":"with 2 auxiliary contacts","Instantaneous Contact":"0","Size Of The Circuit-Breaker":"S00, S0","Substance Prohibitance (Date)":"05/01/2012","Control Supply Voltage Frequency 1":"50 ... 60 Hz","Design Of Short-Circuit Protection":"fuse","reference code according to EN 61346-2":"F","with degree of pollution 3 at AC rated value":"690 V","Type Of Voltage Of The Control Supply Voltage":"AC","Type Of Electrical Connection For Auxiliary And Control Circuit":"screw-type terminals","number of CO contacts of auxiliary contacts instantaneous contact":"0","number of NC contacts for auxiliary contacts instantaneous contact":"0"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/dd5682e04b33c5e16108c53cd6fd3902.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=622030&mlfb=3RV6921-1M","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV6921-1M/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RV6921-1M and get a price?","answer":"The 3RV6921-1M is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"Will 3RV6921-1M drop into a panel specified around 3RV6011-0CA10 without rewiring?","answer":"No — they serve different roles. The 3RV6011-0CA10 is a complete motor circuit breaker (0.25 A, thermal-magnetic, size S00) that occupies its own DIN rail slot. The 3RV6921-1M is an auxiliary signalling switch that snaps onto the side of an existing 3RV6 breaker. You cannot substitute one for the other; they are complementary parts on the same breaker family."},{"question":"What compliance documentation does the 3RV6921-1M carry?","answer":"The part carries a substance prohibitance date of 05/01/2012, indicating RoHS compliance. It is designed to EN 61346-2 (reference code F) and rated for pollution degree 3 per IEC standards. No UL or CSA listing is explicitly stated in the available documentation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV6921-1M","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/3RV6921-1M when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}