{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV1021-0FA10-ZX95","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV1021-0FA10-ZX95","canonicalUrl":"https://aoctrl.com/siemens/3RV1021-0FA10-ZX95","factsUrl":"https://aoctrl.com/api/mcp/products/3RV1021-0FA10-ZX95","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS motor protection circuit breaker, 3RV1021-0FA10-ZX95, 0.5 A rated continuous current, CLASS 10 trip class, 100 kA breaking capacity at 400 V AC, screw-type terminals, snap-on 35 mm DIN rail mount.","salesMarkdown":"The Siemens SIRIUS 3RV1021-0FA10-ZX95 is a motor protection circuit breaker designed for 0.5 A continuous current in AC-3 duty, with a CLASS 10 trip characteristic that clears overloads before the motor windings exceed thermal limits — every shot the same, no scrap on the floor from nuisance trips or missed faults. Rated breaking capacity holds at 100 kA across the full voltage range: 240 V, 400 V, 500 V, and 690 V AC, so it safely interrupts faults up to that level without cascading upstream — a single breaker covers the panel's SCCR requirement. Mounts via screw or snap-on onto 35 mm standard mounting rail per DIN EN 50022, with zero clearance required at the sides or rear — 45 mm wide, 97 mm tall, 96 mm deep, fitting tight gland-plate layouts without derating. ## Motor protection and trip coordination That's the spec that keeps the line running when a contactor drops a leg. For a 0.5 A motor branch, that's the difference between a coordinated trip and a welded contactor. Mechanical endurance rated at 100,000 operations of the main contacts. Main circuit terminals are screw-type, accepting 2× (1 … 2.5 mm²) solid or 2× (2.5 … 6 mm²) stranded, with AWG equivalents 2× (14 … 10). Finely stranded conductors with core-end processing use the same ranges. An auxiliary switch is available as an add-on (not included in the base unit), letting the breaker signal its trip state back to a PLC or status lamp without a separate control relay. ## Environmental and installation constraints Operates from -20 °C to +60 °C, stores and transports from -50 °C to +80 °C — fine for unheated warehouses or roof-mounted enclosures in temperate climates. Shock rated at 25 g for 11 ms, so it holds calibration on a press or conveyor with intermittent vibration. Mounting position is any orientation, simplifying panel layout. Front face is IP20 — finger-safe but not washdown-rated; install inside a sealed enclosure if the panel sees coolant mist or washdown spray.","metaTitle":"Siemens 3RV1021-0FA10-ZX95 SIRIUS Motor Protection Circuit B","metaDescription":"Siemens SIRIUS 3RV1021-0FA10-ZX95 motor protection circuit breaker, 0.5 A continuous, CLASS 10 trip, 100 kA breaking capacity at 400 V. Current production. Sourced 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":"0.12 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":"0.5 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":"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":"0.35 ... 0.5 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=379256&mlfb=3RV1021-0FA10-ZX95","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV1021-0FA10-ZX95/alternatives.json"},"ai":{"faq":[{"question":"Will 3RV1021-0FA10-ZX95 drop into a panel specified around 3RV1011-0GA10 without rewiring?","answer":"Both mount on 35 mm DIN rail per DIN EN 50022 and share the same 45 mm width, but the 3RV1021 series has different terminal layouts and trip characteristics — verify the terminal assignments and the 0.5 A continuous rating against your motor FLA before swapping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV1021-0FA10-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/3RV1021-0FA10-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}}