{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV1321-0EC10","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV1321-0EC10","canonicalUrl":"https://aoctrl.com/siemens/3RV1321-0EC10","factsUrl":"https://aoctrl.com/api/mcp/products/3RV1321-0EC10","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RV1321-0EC10 circuit breaker for starter combinations, 0.4 A continuous current, 100 kA breaking capacity at 400 V AC, screw terminals, IP20 front, DIN rail mount.","salesMarkdown":"The Siemens 3RV1321-0EC10 is a SIRIUS circuit breaker designed for starter combinations, carrying a continuous current rating of 0.4 A and a breaking capacity of 100 kA at 400 V AC — that 100 kA figure means it can safely interrupt a fault current up to that level without upstream devices needing to clear it first, which simplifies coordination in a motor control center. IP20 on the front means finger-safe touch protection against electrical shock; the screw-type terminals on both main and auxiliary/control circuits accept solid and stranded conductors up to 2x 6 mm², with a backwards clearance of 0 mm and side clearance of 0 mm — zero spacing needed between units on the rail. The 0.4 A continuous current sets the motor full-load current it protects — pair it with a contactor rated for the same motor FLA. The 100 kA breaking capacity holds across 240 V, 400 V, 500 V, and 690 V AC (all rated 100 kA), so the same SCCR applies regardless of the supply voltage within that range. Rated for 5.5 W power loss in hot operating state (1.8 W per pole), which matters for thermal management inside a sealed enclosure — that's modest enough for a standard steel panel without forced ventilation.","metaTitle":"Siemens 3RV1321-0EC10 SIRIUS Circuit Breaker, 0.4 A, 100 kA","metaDescription":"Siemens 3RV1321-0EC10 SIRIUS circuit breaker for starter combinations, rated 0.4 A continuous with 100 kA breaking capacity at 400 V. Current lifecycle stage, available to order. I","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Motor Protection Circuit Breakers (MPCB)"],"specifications":{"Depth":"96 mm","Solid":"2x (1 ... 2.5 mm²), 2x (2.5 ... 6 mm²)","Width":"45 mm","Height":"97 mm","Stranded":"2x (1 ... 2.5 mm²), 2x (2.5 ... 6 mm²)","Backwards":"0 mm","At The Side":"0 mm","Rated Value":"690 V","During Storage":"-50 ... +80 °C","lifecycle_stage":"current","During Operation":"-20 ... +60 °C","During Transport":"-50 ... +80 °C","Fastening Method":"screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022","Shock Resistance":"25g / 11 ms","Mounting Position":"any","Product Brand Name":"SIRIUS","Product Designation":"circuit breaker","at 400 V rated value":"0.09 kW","Design Of The Product":"for starter combinations","Ground Fault Detection":"No","Phase Failure Detection":"No","For Main Current Circuit":"screw-type terminals","at AC at 240 V rated value":"100 kA","at AC at 400 V rated value":"100 kA","at AC at 500 V rated value":"100 kA","at AC at 690 V rated value":"100 kA","at AC-3 rated value maximum":"690 V","at AC in hot operating state":"5.5 W","Substance Prohibitance (Date)":"01.05.2012 00:00:00","Continuous Current Rated Value":"0.4 A","at AWG cables for main contacts":"2x (14 ... 10)","protection class IP on the front":"IP20","For Auxiliary And Control Circuit":"screw-type terminals","Product Extension Auxiliary Switch":"Yes","operating frequency at AC-3 maximum":"15 1/h","Surge Voltage Resistance Rated Value":"6 000 V","at AC in hot operating state per pole":"1.8 W","Finely Stranded With Core End Processing":"2x (1 ... 2.5 mm²), 2x (2.5 ... 6 mm²)","Number Of Poles For Main Current Circuit":"3","Touch Protection Against Electrical Shock":"finger-safe","number of CO contacts for auxiliary contacts":"0","operational current at AC-3 at 400 V rated value":"0.4 A","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Design Of The Overcurrent Release And Short-Circuit Release":"magnetic","Arrangement Of Electrical Connectors For Main Current Circuit":"front side","Product Function Removable Terminal For Auxiliary And Control Circuit":"No","Mechanical Service Life (Switching Cycles) Of The Main Contacts Typical":"100 000"}},"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=401901&mlfb=3RV1321-0EC10","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV1321-0EC10/alternatives.json"},"ai":{"faq":[{"question":"What compliance documentation does Siemens provide for the 3RV1321-0EC10?","answer":"The part carries a substance prohibition date of 01.05.2012, indicating RoHS compliance; the SIRIUS series typically includes CE, UL, and CSA certifications, though specific approvals should be verified against the nameplate."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV1321-0EC10","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/3RV1321-0EC10 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}}