{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV1922-1CV0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV1922-1CV0","canonicalUrl":"https://aoctrl.com/siemens/3RV1922-1CV0","factsUrl":"https://aoctrl.com/api/mcp/products/3RV1922-1CV0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RV1922-1CV0 undervoltage release, 400 V AC 50/60 Hz, with 2 NO leading auxiliary contacts, snap-on mounting for Size S00, S0, S2, S3 circuit breakers.","salesMarkdown":"The Siemens SIRIUS 3RV1922-1CV0 is an undervoltage release designed for use with motor circuit breakers in the S00, S0, S2, and S3 size range. It drops the breaker when control voltage falls below the dropout threshold, providing undervoltage protection for motor loads in a panel. The release includes 2 normally-open leading auxiliary contacts that signal the breaker state ahead of the main contacts — useful for sequencing in a safety circuit or PLC input. The 18.5 mm width means it takes up one standard modular slot, leaving room alongside the breaker it serves. IP20 finger-safe front protection is standard, with pollution degree 3 rated insulation at 690 V. ## Integration Note The release snaps onto the left side of the SIRIUS 3RV2 motor circuit breaker. The 2 NO leading auxiliary contacts wire back to the control circuit — typically to a PLC digital input or a safety relay that monitors the breaker's undervoltage state. The 400 V AC coil connects to the line-side control transformer; verify the dropout voltage is below the minimum operating threshold for your control supply. Depth is 68 mm, which is within the standard 70 mm DIN-rail enclosure depth. The 18.5 mm width keeps the assembly compact — a breaker plus this release occupies roughly 63 mm on the rail for an S00 frame, leaving room for auxiliary contact blocks or a shunt trip in the same row.","metaTitle":"Siemens 3RV1922-1CV0 SIRIUS Undervoltage Release, 400 V AC","metaDescription":"Siemens SIRIUS 3RV1922-1CV0 undervoltage release, 400 V AC 50/60 Hz, 2 NO leading aux contacts, for S00-S3 breakers. Phased-out; successor 3RV2922-1CV0 available. Sourced 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":"18.5 mm","Height":"90 mm","During Storage":"-50 ... +80 °C","lifecycle_stage":"current","During Operation":"-20 ... +60 °C","Fastening Method":"snap-on mounting","Final Rated Value":"60 Hz","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":"400 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 acc. to DIN EN 61346-2":"F","Type Of Voltage Of The Control Supply Voltage":"AC","touch protection on the front acc. to IEC 60529":"finger-safe, for vertical contact from the front","protection class IP on the front acc. to IEC 60529":"IP20","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=427583&mlfb=3RV1922-1CV0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV1922-1CV0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the 3RV1922-1CV0 and get a price?","answer":"This phased-out part is sourced to order against an RFQ through independent distribution. Submit a request for quote; availability and current pricing are confirmed at quote time."},{"question":"What breaker sizes does the 3RV1922-1CV0 fit?","answer":"It fits SIRIUS motor circuit breaker sizes S00, S0, S2, and S3. The same release body works across all four frame sizes."},{"question":"What is the coil voltage and frequency for this undervoltage release?","answer":"The coil is rated 400 V AC at 50 Hz, and also accepts 60 Hz supply. It is designed for AC control voltage only."},{"question":"What auxiliary contacts does the 3RV1922-1CV0 include?","answer":"It includes 2 normally-open leading auxiliary contacts. These are leading contacts, meaning they change state before the main contacts — useful for signaling the breaker status in a control sequence."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV1922-1CV0","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/3RV1922-1CV0 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}}