{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV1021-0JA10","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV1021-0JA10","canonicalUrl":"https://aoctrl.com/siemens/3RV1021-0JA10","factsUrl":"https://aoctrl.com/api/mcp/products/3RV1021-0JA10","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RV1021-0JA10 motor protection circuit breaker, 1 A continuous, Class 10 trip, 100 kA breaking capacity at 400 V, 45 mm wide, screw terminals, DIN-rail mount.","salesMarkdown":"## Motor Protection Circuit Breaker, 1 A, Class 10 — SIRIUS 3RV1021-0JA10 Breaking capacity is 100 kA across the board at 240 V, 400 V, 500 V, and 690 V AC — that's full-range fault clearing without cascading upstream breakers. For a 1 A motor protector, that's serious headroom; it handles high-fault-current panels without coordination gymnastics. Ground fault detection is not included — if you need that, this isn't the variant. At 400 V, the 3RV1021-0JA10 is rated for 0.25 kW motor load. That's a small motor — think a coolant pump, a fan, or a small conveyor drive. The Class 10 trip means it will hold through a typical motor start without tripping, but clears quickly on a locked-rotor condition. Screw terminals on both main and auxiliary circuits accept solid or stranded wire: 2x (1…2.5 mm²) and 2x (2.5…6 mm²) per clamp. That's enough for the motor leads and control wiring. AWG equivalent is 2x (14…10). No special tools beyond a screwdriver. Power dissipation is 7.25 W total in hot operating state, or 2.4 W per pole. Rated for 15 operations per hour at AC-3 — this is a motor starter duty cycle, not a high-speed switching device. Shock rated at 25g / 11 ms, good for industrial machinery and conveyors.","metaTitle":"Siemens 3RV1021-0JA10 SIRIUS Motor Protection Circuit Breake","metaDescription":"Siemens 3RV1021-0JA10 SIRIUS motor protection circuit breaker, 1 A continuous, Class 10 trip, 100 kA breaking capacity at 400 V, 45 mm wide, DIN-rail mount. Active production, avai","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","Trip Class":"CLASS 10","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":"0.25 kW","Design Of The Product":"for motor protection","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","at AC in hot operating state":"7.25 W","Substance Prohibitance (Date)":"01.05.2012 00:00:00","Continuous Current Rated Value":"1 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":"2.4 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":"1 A","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Design Of The Overcurrent Release And Short-Circuit Release":"thermomagnetic","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","Adjustable Current Response Value Current Of The Current-Dependent Overload Release":"0.7 ... 1 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=211056&mlfb=3RV1021-0JA10","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV1021-0JA10/alternatives.json"},"ai":{"faq":[{"question":"What is 3RV1021-0JA10's depth on the DIN rail?","answer":"The depth is 96 mm. That's the dimension from the DIN-rail mounting surface to the front of the breaker — important for enclosure depth clearance."},{"question":"What wire sizes does 3RV1021-0JA10 accept?","answer":"Screw terminals accept solid or stranded wire: 2x (1…2.5 mm²) and 2x (2.5…6 mm²) per clamp. AWG equivalent is 2x (14…10)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV1021-0JA10","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/3RV1021-0JA10 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}}