{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV1021-0CA10-0FJ0-ZX95","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV1021-0CA10-0FJ0-ZX95","canonicalUrl":"https://aoctrl.com/siemens/3RV1021-0CA10-0FJ0-ZX95","factsUrl":"https://aoctrl.com/api/mcp/products/3RV1021-0CA10-0FJ0-ZX95","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS, motor protection circuit breaker, 3RV1021-0CA10-0FJ0-ZX95, 0.25 A continuous current, CLASS 10 trip class, 100 kA breaking capacity at 400 V AC, screw-type terminals, IP20 front protection.","salesMarkdown":"## What this SIRIUS breaker does on the line The Siemens 3RV1021-0CA10-0FJ0-ZX95 is a SIRIUS motor protection circuit breaker built for small-horsepower three-phase motors — at 400 V AC it's rated for 0.06 kW motor output, so think fractional-horsepower pumps, small fans, or conveyor drives that draw 0.25 A continuous. Trip class CLASS 10 means it clears an overload in under 10 seconds at 7.2× the set current — that's the standard for standard-duty induction motor starts, not for high-inertia loads that need a slower CLASS 20 or 30 curve. The interrupting rating is a flat 100 kA across 240 V, 400 V, 500 V, and 690 V AC — that's a lot of fault-current headroom for a 0.25 A breaker, meaning it handles high available short-circuit current on a panel fed by a large transformer without needing an upstream current-limiting fuse. Screw-type terminals on the main circuit accept 1…2.5 mm² solid or stranded (two wires per clamp) or AWG 14…10 — fine for the control wiring you'd run to a 0.25 A motor. Depth is 96 mm, height 97 mm — it sits flush with other SIRIUS 3RV1 breakers on the rail, so no staggered mounting for mixed sizes. It includes an auxiliary switch (the -0FJ0 suffix), so you get a status contact for the PLC or annunciator without adding a separate block — saves a DIN slot and wiring time. Rated for 690 V AC-3 and surge voltage resistance is 6 kV.","metaTitle":"Siemens 3RV1021-0CA10-0FJ0-ZX95 SIRIUS Motor Protection CB,","metaDescription":"Siemens SIRIUS 3RV1021-0CA10-0FJ0-ZX95 motor protection circuit breaker, 0.25 A continuous current, CLASS 10 trip, 100 kA breaking capacity at 400 V AC. DIN rail mount, IP20 front.","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":"0.06 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":"100 kA","at AC at 690 V rated value":"100 kA","at AC-3 rated value maximum":"690 V","Of The Main Contacts Typical":"100 000","at AC in hot operating state":"5.5 W","Continuous current rated value":"0.25 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":"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","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":"0.18 ... 0.25 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=23066&mlfb=3RV1021-0CA10-0FJ0-ZX95","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV1021-0CA10-0FJ0-ZX95/alternatives.json"},"ai":{"faq":[{"question":"Will 3RV1021-0CA10-0FJ0-ZX95 drop into a panel spec'd for 3RV1011-0GA10?","answer":"No — the 3RV1021 frame is 45 mm wide versus the 3RV1011's narrower width, so the DIN-rail footprint and terminal positions differ. Rewiring and re-drilling the panel would be required."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV1021-0CA10-0FJ0-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/3RV1021-0CA10-0FJ0-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}}