{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV1321-1JC10","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV1321-1JC10","canonicalUrl":"https://aoctrl.com/siemens/3RV1321-1JC10","factsUrl":"https://aoctrl.com/api/mcp/products/3RV1321-1JC10","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS circuit breaker for starter combinations, 3RV1321-1JC10, 10 A continuous, 100 kA breaking capacity at 400 V AC, 3-pole, screw terminals, IP20, DIN rail mount.","salesMarkdown":"## SIRIUS 3RV1321-1JC10 — Motor Circuit Breaker for Starter Combinations The Siemens SIRIUS 3RV1321-1JC10 is a 3-pole circuit breaker designed specifically for starter combinations, rated 10 A continuous current and 4 kW at 400 V AC-3 duty. It provides motor and short-circuit protection in a single device, sized for a 45 mm wide DIN-rail footprint. Breaking capacity reaches 100 kA at 400 V AC, dropping to 42 kA at 500 V and 6 kA at 690 V — sufficient for high-fault panels where upstream coordination keeps let-through within the device's rating. The front face carries IP20 finger-safe touch protection. The 6 kV rated surge voltage resistance (impulse withstand) matches standard industrial distribution panels and supports coordination with upstream surge arrestors. RoHS compliance dated 01.05.2012. No ground-fault or phase-failure detection built in — those functions require an add-on module or a separate monitoring relay. Dimensions: 96 mm depth, 45 mm width, 97 mm height — fits standard 45 mm slot spacing. No clearance required at the back or sides for heat dissipation, though the 9.25 W total power loss (3.1 W per pole) should be considered in sealed enclosures. Screw terminals accept 2x (1…2.5 mm²) or 2x (2.5…6 mm²) solid or stranded wire, with ferruled fine-stranded also supported. AWG equivalents: 2x (14…10). The auxiliary switch option (product extension) allows adding a signal contact for remote status.","metaTitle":"Siemens 3RV1321-1JC10 SIRIUS Circuit Breaker, 10 A, 100 kA a","metaDescription":"Siemens SIRIUS 3RV1321-1JC10 circuit breaker for starter combinations. 10 A continuous, 100 kA breaking at 400 V AC. Screw terminals, IP20, DIN rail mount. Active production. Quote","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":"4 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":"42 kA","at AC at 690 V rated value":"6 kA","at AC-3 rated value maximum":"690 V","at AC in hot operating state":"9.25 W","Substance Prohibitance (Date)":"01.05.2012 00:00:00","Continuous Current Rated Value":"10 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":"3.1 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":"10 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 Component 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=387499&mlfb=3RV1321-1JC10","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV1321-1JC10/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 3RV1321-1JC10 at different voltages?","answer":"At 240 V AC it is 100 kA, at 400 V AC it is 100 kA, at 500 V AC it is 42 kA, and at 690 V AC it is 6 kA."},{"question":"What wire sizes does 3RV1321-1JC10 accept?","answer":"Screw terminals accept 2x (1…2.5 mm²) or 2x (2.5…6 mm²) solid, stranded, or fine-stranded with ferrule. AWG equivalents are 2x (14…10)."},{"question":"Where can I buy 3RV1321-1JC10 and how is it quoted?","answer":"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":"Does 3RV1321-1JC10 include ground-fault or phase-failure detection?","answer":"No. Ground-fault detection and phase-failure detection are not built in. Those functions require an add-on module or a separate monitoring relay."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV1321-1JC10","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/3RV1321-1JC10 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}}