{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV2922-1CB0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV2922-1CB0","canonicalUrl":"https://aoctrl.com/siemens/3RV2922-1CB0","factsUrl":"https://aoctrl.com/api/mcp/products/3RV2922-1CB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS undervoltage release 3RV2922-1CB0, 24 V AC 50/60 Hz, with 2 NO leading auxiliary contacts, screw terminals, for 3RV2 circuit breakers sizes S00-S3.","salesMarkdown":"The Siemens 3RV2922-1CB0 is a SIRIUS undervoltage release designed specifically for the 3RV2 family of motor circuit breakers. It drops the breaker's trip mechanism when the control voltage falls below its dropout threshold, preventing an automatic restart after a supply interruption — a standard requirement for machine safety circuits per EN 60204-1. ## Compatibility and ratings This undervoltage release fits circuit breaker sizes S00, S0, S2, and S3 within the 3RV2 series, covering the common motor-protection range from 0.1 A up to roughly 100 A depending on the breaker frame. That rating means the release is suitable for uncoated use in most control panels without derating for creepage or clearance. The 2 NO leading auxiliary contacts are wired via screw terminals, and the release carries the reference code F per EN 61346-2, which designates a protective device function.","metaTitle":"Siemens 3RV2922-1CB0 SIRIUS Undervoltage Release, 24 V AC, 2","metaDescription":"Siemens 3RV2922-1CB0 SIRIUS undervoltage release for 3RV2 motor circuit breakers. 24 V AC, 50/60 Hz, 2 NO leading auxiliary contacts, snap-on DIN rail. Active production, sourced t","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Motor Protection Circuit Breakers (MPCB)"],"specifications":{"Depth":"68 mm","Width":"18.5 mm","Height":"90 mm","During Storage":"-50 ... +80 °C","lifecycle_stage":"current","During Operation":"-20 ... +60 °C","Fastening Method":"snap-on mounting","Product Brand Name":"SIRIUS","Degree Of Pollution":"3","Initial Rated Value":"50 Hz","Product Designation":"undervoltage release","Suitability For Use":"motor circuit breaker","at 50 Hz rated value":"24 V","Design Of The Product":"with 2 auxiliary contacts","Size Of The Circuit-Breaker":"S00, S0, S2, S3","Insulation Voltage Rated Value":"690 V","Design Of Short-Circuit Protection":"fuse","reference code according to EN 61346-2":"F","Type Of Voltage Of The Control Supply Voltage":"AC","number of NO contacts for auxiliary contacts leading contact":"2","insulation voltage with degree of pollution 3 at AC rated value":"690 V","number of CO contacts of auxiliary contacts instantaneous contact":"0","number of NC contacts for auxiliary contacts instantaneous contact":"0","number of NO contacts for auxiliary contacts instantaneous contact":"0"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=113440&mlfb=3RV2922-1CB0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV2922-1CB0/alternatives.json"},"ai":{"faq":[{"question":"What is 3RV2922-1CB0 used for?","answer":"It is an undervoltage release for Siemens 3RV2 motor circuit breakers. When the 24 V AC control voltage drops below the dropout threshold, it trips the breaker, preventing automatic restart after a power interruption — a key safety function for motor circuits."},{"question":"What breaker sizes does 3RV2922-1CB0 fit?","answer":"It fits 3RV2 circuit breaker sizes S00, S0, S2, and S3, covering the full SIRIUS motor-protection frame range."},{"question":"What are the key ratings of 3RV2922-1CB0?","answer":"Control voltage is 24 V AC at 50/60 Hz. It has 2 NO leading auxiliary contacts with screw terminals. Insulation voltage is 690 V AC at pollution degree 3. Operating temperature is -20 to +60 °C. Width is 18.5 mm for snap-on DIN rail mounting."},{"question":"Where can I buy 3RV2922-1CB0?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV2922-1CB0","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/3RV2922-1CB0 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}}