{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV1021-4DA10-0FJ0-ZX95","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV1021-4DA10-0FJ0-ZX95","canonicalUrl":"https://aoctrl.com/siemens/3RV1021-4DA10-0FJ0-ZX95","factsUrl":"https://aoctrl.com/api/mcp/products/3RV1021-4DA10-0FJ0-ZX95","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RV1021-4DA10-0FJ0-ZX95 motor protection circuit breaker, 25 A continuous, 11 kW at 400 V, CLASS 10 trip class, 50 kA breaking capacity, screw terminals, 45 mm wide.","salesMarkdown":"It's designed for motor protection, meaning it tracks current and temperature to catch an overload before the winding insulation gives up, and it clears a fault fast enough that the contactor downstream doesn't weld shut. That's enough for most industrial distribution panels fed by a transformer in the 500–1000 kVA range — you're not going to outrun this breaker on a typical motor branch circuit. The 25 A continuous rating is the thermal setting range — you set the overload dial to match the motor's full-load amps, and the bimetal element tracks the heating curve. At 400 V, the 11 kW motor rating is the sweet spot; if your motor is 15 kW at 400 V, you step up to the next frame. No ground-fault detection here, so if you need that, you add an external ground-fault relay. Any mounting position works, which simplifies panel layout. Accepts solid or stranded conductors: 2× (1…2.5 mm²) or 2× (2.5…6 mm²) per terminal, or AWG 14–10 for the main contacts. That covers most motor branch wiring up to 6 mm² — if your motor feeder is 10 mm², you'll need a terminal adapter or a larger frame breaker. Depth is 96 mm, height 97 mm, width 45 mm. The 45 mm width is three 15 mm module spaces on the DIN rail — standard for a motor-protective device in this current class. No clearance needed at the sides or behind the unit (0 mm backwards clearance), so you can pack it tight against adjacent devices. Shock rated at 25g for 11 ms — survives the ride in a panel on a vibrating conveyor line. Switching frequency max 15 operations per hour at AC-3, which is fine for a motor start/stop cycle but not for a rapid-pulse application like a welding gun.","metaTitle":"Siemens 3RV1021-4DA10-0FJ0-ZX95 SIRIUS Motor Protection Circ","metaDescription":"Siemens SIRIUS 3RV1021-4DA10-0FJ0-ZX95 motor protection circuit breaker, 25 A continuous, 11 kW at 400 V, CLASS 10 trip, 50 kA breaking capacity. Current lifecycle stage. Sourced t","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":"11 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":"50 kA","at AC at 500 V rated value":"10 kA","at AC at 690 V rated value":"4 kA","at AC-3 rated value maximum":"690 V","Of The Main Contacts Typical":"100 000","at AC in hot operating state":"10.5 W","Continuous current rated value":"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":"3.5 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":"20 ... 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=259450&mlfb=3RV1021-4DA10-0FJ0-ZX95","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV1021-4DA10-0FJ0-ZX95/alternatives.json"},"ai":{"faq":[{"question":"What is the depth of 3RV1021-4DA10-0FJ0-ZX95?","answer":"The depth is 96 mm, with a width of 45 mm and height of 97 mm. No clearance is required at the sides or behind the unit (0 mm backwards clearance), so it fits tight on the DIN rail."},{"question":"What conductor sizes does the 3RV1021-4DA10-0FJ0-ZX95 accept?","answer":"The screw terminals accept solid or stranded conductors: 2× (1…2.5 mm²) or 2× (2.5…6 mm²) per terminal, and AWG 14–10 for the main contacts."},{"question":"Will 3RV1021-4DA10-0FJ0-ZX95 drop into a panel specified around 3RV6011-0CA10 without rewiring?","answer":"Not without checking the footprint. Both are SIRIUS motor protection breakers, but the 3RV1021 series is a different physical frame than the 3RV6011 — the 45 mm width is standard, but verify the DIN rail clip position and terminal layout against your panel cutout. The screw terminal type is the same, so wiring may transfer if the terminal spacing matches."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV1021-4DA10-0FJ0-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/3RV1021-4DA10-0FJ0-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}}