{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV1021-0CA10-0FJ0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV1021-0CA10-0FJ0","canonicalUrl":"https://aoctrl.com/siemens/3RV1021-0CA10-0FJ0","factsUrl":"https://aoctrl.com/api/mcp/products/3RV1021-0CA10-0FJ0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RV1021-0CA10-0FJ0 motor protection circuit breaker, 0.25 A continuous current, CLASS 10 trip class, 100 kA breaking capacity at 400 V AC, screw-type terminals, snap-on 35 mm DIN rail.","salesMarkdown":"It's designed to protect motors against overload and short-circuit, with phase failure detection built in. The 0.25 A continuous current rating is the setting you lock in for motor full-load current. At 400 V, this breaker covers motor power up to 0.06 kW. Breaking capacity holds at 100 kA across the voltage range from 240 V through 690 V AC. That's a uniform high-fault rating that simplifies panel design — you don't need to derate for higher supply voltages. The maximum switching frequency under AC-3 duty is 15 operations per hour, which suits motor starting cycles but not rapid jogging. Mechanical life of the main contacts is rated at 100 000 operations typical. Power dissipation in hot operating state is 5.5 W total, or 1.8 W per pole — negligible for panel thermal budgeting but worth noting if you're packing breakers tightly. ## Wiring and integration Main circuit terminals are screw-type, accepting solid or stranded conductors: 2x (1... 2.5 mm²) or 2x (2.5... 6 mm²). For AWG, that's 2x (14... 10). Finely stranded wire with ferrule is also supported in the same ranges. The auxiliary switch is present on this variant, but there are zero factory-fitted auxiliary contacts — the switch is integral to the breaker mechanism. Shock resistance is 25g for 11 ms, and mounting position is any orientation.","metaTitle":"Siemens 3RV1021-0CA10-0FJ0 SIRIUS Motor Protection Breaker,","metaDescription":"Siemens SIRIUS 3RV1021-0CA10-0FJ0 motor protection circuit breaker, 0.25 A continuous, CLASS 10 trip, 100 kA breaking capacity at 400 V. Current production. Quoted to order.","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=39674&mlfb=3RV1021-0CA10-0FJ0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV1021-0CA10-0FJ0/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 3RV1021-0CA10-0FJ0 at 400 V?","answer":"It's rated for 100 kA at 400 V AC, and the same 100 kA rating holds at 240 V, 500 V, and 690 V AC."},{"question":"Will 3RV1021-0CA10-0FJ0 drop into a panel specified around 3RV1011-0GA10?","answer":"Both are 45 mm wide SIRIUS breakers that snap onto 35 mm DIN rail, so the mechanical footprint is the same. The key difference is the current rating and trip class — verify your motor FLA and coordination study before swapping. The 3RV1021-0CA10-0FJ0 is a 0.25 A CLASS 10 device; the 3RV1011-0GA10 is a different rating in the same family."},{"question":"Where can I buy 3RV1021-0CA10-0FJ0 and how is it quoted?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"What compliance documentation does Siemens provide for 3RV1021-0CA10-0FJ0?","answer":"As a SIRIUS motor protection circuit breaker, it carries the usual Siemens declarations for IEC/EN 60947 standards. Specific RoHS, REACH, and UL documentation should be available from Siemens support or your distributor upon request — the evidence does not list specific cert numbers."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV1021-0CA10-0FJ0","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 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}}