{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV1021-4BA10-ZX95","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV1021-4BA10-ZX95","canonicalUrl":"https://aoctrl.com/siemens/3RV1021-4BA10-ZX95","factsUrl":"https://aoctrl.com/api/mcp/products/3RV1021-4BA10-ZX95","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS motor protection circuit breaker, 3RV1021-4BA10-ZX95, 20 A continuous rated, CLASS 10 trip, 50 kA breaking capacity at 400 V AC, screw-type terminals, for 35 mm DIN rail.","salesMarkdown":"It carries a continuous current rating of 20 A and a CLASS 10 trip characteristic, meaning it will trip within 10 seconds at 7.2× the set current — fast enough to protect standard induction motors during locked-rotor conditions. The breaker also includes phase failure detection, so a lost phase on the line side will trip the load before single-phasing damages the winding. Breaking capacity varies with supply voltage: 100 kA at 240 V AC, 50 kA at 400 V AC, 10 kA at 500 V AC, and 4 kA at 690 V AC. At 400 V, that 50 kA SCCR covers most industrial distribution panels without requiring an upstream current-limiting fuse. The 3RV1021-4BA10-ZX95 is rated for 7.5 kW motor power at 400 V AC, which sizes it for a typical 10 HP (7.5 kW) four-pole induction motor on a 400 V three-phase supply. Maximum operating frequency is 15 operations per hour under AC-3 duty, adequate for pump, fan, and conveyor cycling but not for high-speed jogging applications. Width is 45 mm, height 97 mm, depth 96 mm. No side or backward spacing required — zero millimeters to adjacent devices — so it packs tight on the rail. Main and auxiliary/control circuits both use screw-type terminals. Solid and stranded conductors: 2× (1 … 2.5 mm²) and 2× (2.5 … 6 mm²) per terminal. AWG equivalents: 2× (14 … 10). Finely stranded with core-end processing uses the same ranges. An auxiliary switch can be added via the product extension (Yes). Ground fault detection is not built in — that's handled separately if required by the application. Shock resistance is 25g / 11 ms, suitable for machine-mounted installations near vibrating equipment. Substance prohibitance date is 01.05.2012, which aligns with RoHS compliance deadlines. ## Power dissipation and thermal management Total power dissipation in hot operating state is 10.5 W, with 3.5 W per pole.","metaTitle":"Siemens 3RV1021-4BA10-ZX95 SIRIUS Motor Protection Circuit B","metaDescription":"Siemens SIRIUS 3RV1021-4BA10-ZX95 motor protection circuit breaker, 20 A continuous, CLASS 10 trip, 50 kA at 400 V. Screw terminals, DIN rail mount. Current production. Quoted to o","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":"7.5 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":"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","at AC in hot operating state":"10.5 W","Substance Prohibitance (Date)":"01.05.2012 00:00:00","Continuous Current Rated Value":"20 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":"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","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":"20 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":"14 ... 20 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=24825&mlfb=3RV1021-4BA10-ZX95","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV1021-4BA10-ZX95/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 3RV1021-4BA10-ZX95 at 400 V?","answer":"50 kA at 400 V AC, which is the typical industrial distribution voltage. At 240 V it is 100 kA; at 500 V it drops to 10 kA; at 690 V it is 4 kA."},{"question":"What motor power does 3RV1021-4BA10-ZX95 protect at 400 V?","answer":"7.5 kW at 400 V AC, which corresponds to a standard 10 HP induction motor on a three-phase supply."},{"question":"Does 3RV1021-4BA10-ZX95 include phase failure protection?","answer":"Yes, phase failure detection is built in. Ground fault detection is not included."},{"question":"Where can I buy 3RV1021-4BA10-ZX95?","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."},{"question":"What compliance documentation is available for 3RV1021-4BA10-ZX95?","answer":"The substance prohibitance date of 01.05.2012 aligns with RoHS compliance. The SIRIUS series carries CE marking and UL/CSA certifications per standard Siemens documentation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV1021-4BA10-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/3RV1021-4BA10-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}}