{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV1021-1KA10-ZX95","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV1021-1KA10-ZX95","canonicalUrl":"https://aoctrl.com/siemens/3RV1021-1KA10-ZX95","factsUrl":"https://aoctrl.com/api/mcp/products/3RV1021-1KA10-ZX95","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS, motor protection circuit breaker, 3RV1021-1KA10-ZX95, 12.5 A continuous, CLASS 10 trip, 100 kA breaking capacity at 400 V AC, screw terminals, 45 mm width.","salesMarkdown":"## Motor protection circuit breaker, 12.5 A, CLASS 10 Its 12.5 A continuous current rating and CLASS 10 trip characteristic mean it clears a stalled-rotor condition fast enough to protect standard IEC induction motors before winding temperature exceeds the insulation class — that is the core job this part is built for. Rated breaking capacity reaches 100 kA at 400 V AC, dropping to 42 kA at 500 V and 6 kA at 690 V. That means if one phase drops on a three-phase motor, the breaker trips before single-phasing cooks the winding — a standard requirement for motor protection under IEC 60947-4-1. Any mounting position is allowed, which helps when the enclosure is tight on vertical space. Screw terminals on the main circuit accept solid or stranded conductors: 2x (1 … 2.5 mm²) and 2x (2.5 … 6 mm²), or AWG 14–10.","metaTitle":"Siemens 3RV1021-1KA10-ZX95 SIRIUS Motor Protection Circuit B","metaDescription":"Siemens SIRIUS 3RV1021-1KA10-ZX95 motor protection circuit breaker, 12.5 A continuous, CLASS 10 trip, 100 kA at 400 V AC. Phase failure detection. Sourced to order against RFQ.","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","Maximum":"2 000 m","Stranded":"2x (1 ... 2.5 mm²), 2x (2.5 ... 6 mm²)","Backwards":"0 mm","Trip class":"CLASS 10","At The Side":"0 mm","Rated Value":"690 V","On The Front":"IP20","Mounting type":"screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022","During Storage":"-50 ... +80 °C","at AC-3 maximum":"15 1/h","lifecycle_stage":"current","Auxiliary switch":"Yes","During Operation":"-20 ... +60 °C","During Transport":"-50 ... +80 °C","Shock resistance":"25g / 11 ms","Mounting position":"any","Product brand name":"SIRIUS","Product designation":"circuit breaker","at 400 V rated value":"5.5 kW","Design of the product":"for motor protection","For Auxiliary Contacts":"0","Ground fault detection":"No","Phase failure detection":"Yes","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","Of The Main Contacts Typical":"100 000","at AC in hot operating state":"9.25 W","Continuous current rated value":"12.5 A","at AWG conductors for main contacts":"2x (14 ... 10)","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","For Auxiliary And Control Current Circuit":"screw-type terminals","Removable Terminal For Auxiliary And Control Circuit":"No","Design of the overcurrent release and short-circuit release":"thermomagnetic","Arrangement of electrical connectors for main current circuit":"front side","Adjustable pick-up value current of the current-dependent overload release":"9 ... 12.5 A"}},"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=497522&mlfb=3RV1021-1KA10-ZX95","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV1021-1KA10-ZX95/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of this circuit breaker at 400 V?","answer":"100 kA at 400 V AC. At 500 V it drops to 42 kA, and at 690 V to 6 kA."},{"question":"Does this breaker include phase failure protection?","answer":"Yes, phase failure detection is built in, protecting the motor against single-phasing."},{"question":"What is the trip class and what does it mean?","answer":"CLASS 10 — the breaker trips within 10 seconds at a locked-rotor current, matching the thermal withstand of standard IEC induction motors."},{"question":"What is the power dissipation of this device?","answer":"9.25 W total in hot operating state at AC, or 3.1 W per pole. Useful for enclosure heat calculations."},{"question":"How do I get pricing and availability for the 3RV1021-1KA10-ZX95?","answer":"This part is sourced to order against an RFQ through independent distribution. Submit a request for current pricing and availability — confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV1021-1KA10-ZX95","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/3RV1021-1KA10-ZX95 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}}