{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV5902-1AV0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV5902-1AV0","canonicalUrl":"https://aoctrl.com/siemens/3RV5902-1AV0","factsUrl":"https://aoctrl.com/api/mcp/products/3RV5902-1AV0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS undervoltage release, 3RV5902-1AV0, 400 V AC 50 Hz / 440 V 60 Hz, for S00/S0/S2/S3 circuit breakers, screw-type terminals, snap-on mounting.","salesMarkdown":"The Siemens 3RV5902-1AV0 is a SIRIUS undervoltage release designed for motor circuit breakers in the S00, S0, S2, and S3 frame sizes. It drops the breaker open when the control supply falls below the dropout threshold, preventing an unexpected restart after a power dip — a standard requirement for machine safety circuits and conveyor interlock schemes. Rated 400 V AC at 50 Hz and 440 V AC at 60 Hz, the coil accepts a 50–60 Hz supply. The control voltage is AC only; no DC variant here. Screw-type terminals on the auxiliary and control circuit make for a straightforward field connection. Snap-on mounting onto a DIN rail keeps panel integration quick. The 19 mm width and 68 mm depth mean it tucks into a single modular space alongside the breaker. The 20 ms maximum break time means the release opens the breaker within two line cycles at 50 Hz — fast enough to clear a sustained undervoltage before downstream contactors drop out. That timing matters when you're coordinating a multi-motor start sequence. The 690 V rated insulation voltage at pollution degree 3 confirms the release is suitable for 400/480 V line-to-line systems with margin. No derating needed unless you're pushing the upper ambient limit.","metaTitle":"Siemens 3RV5902-1AV0 SIRIUS undervoltage release, 400V AC 50","metaDescription":"Siemens 3RV5902-1AV0 SIRIUS undervoltage release, 400V AC 50Hz / 440V 60Hz, for S00/S0/S2/S3 motor circuit breakers. Snap-on mount, screw terminals. Active production. Sourced to o","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":"undervoltage release","Suitability For Use":"motor circuit breaker","at 50 Hz rated value":"400 V","at 60 Hz rated value":"440 V","Instantaneous Contact":"0","Size Of The Circuit-Breaker":"S00, S0, S2, S3","Substance Prohibitance (Date)":"07/01/2006","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/d655135a8a604af4964fd17937cb76f6.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=621623&mlfb=3RV5902-1AV0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV5902-1AV0/alternatives.json"},"ai":{"faq":[{"question":"What is the 3RV5902-1AV0 used for?","answer":"It is an undervoltage release for Siemens SIRIUS motor circuit breakers in frame sizes S00, S0, S2, and S3. It trips the breaker when the control supply voltage drops, preventing automatic restart after a power interruption."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV5902-1AV0","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/3RV5902-1AV0 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}}