{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV2021-4BA15-0BA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV2021-4BA15-0BA0","canonicalUrl":"https://aoctrl.com/siemens/3RV2021-4BA15-0BA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RV2021-4BA15-0BA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS, motor-protective circuit breaker, 3RV2021-4BA15-0BA0, Class 10, 5.5 kW at 230 V, 45 mm wide, screw terminals.","salesMarkdown":"Rated at 5.5 kW at 230 V, it covers small-to-medium motor loads common on conveyor drives, pumps, and fans. ## Short-circuit ratings and selectivity The interrupting ratings are the deciding factor for panel SCCR compliance: 100 kA at 240 V, 25 kA at 400 V, 5 kA at 500 V, and 2 kA at 690 V. For gG fuse-listed backup protection, the rated values are 63 A at 400 V, 50 A at 500 V, and 50 A at 690 V — relevant when coordinating with a downstream motor starter or soft starter. Termination is screw-type terminals for the main current circuit, accepting 2×(0.5–1.5 mm²) or 2×(0.75–2.5 mm²) solid or stranded. The M4 main-contact screws are standard for panel wiring.","metaTitle":"Siemens 3RV2021-4BA15-0BA0 SIRIUS Motor Circuit Breaker, Cla","metaDescription":"Siemens SIRIUS 3RV2021-4BA15-0BA0 motor-protective circuit breaker, Class 10 trip, 5.5 kW at 230V, 25 kA SCCR at 400V. Screw terminals, DIN-rail mount. Available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Motor Protection Circuit Breakers (MPCB)"],"specifications":{"Depth":"97 mm","Width":"45 mm","Height":"97 mm","Upwards":"50 mm","at 24 V":"1 A","at 60 V":"0.15 A","Forwards":"0 mm","at 120 V":"0.5 A","at 125 V":"0.5 A","at 230 V":"0.5 A","at 400 V":"gG 63 A","at 500 V":"gG 50 A","at 690 V":"gG 50 A","Backwards":"0 mm","Downwards":"50 mm","Trip Class":"CLASS 10","At The Side":"30 mm","Rated Value":"20 ... 690 V","During Storage":"-50 ... +80 °C","at AC-3 maximum":"15 1/h","lifecycle_stage":"current","During Operation":"-50 ... +60 °C","During Transport":"-50 ... +80 °C","Fastening Method":"screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 60715","For Main Contacts":"M4","Mounting Position":"any","Solid Or Stranded":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Product Brand Name":"SIRIUS","Product Designation":"Circuit breaker","at 230 V rated value":"5.5 kW","at 240 V rated value":"100 kA","at 400 V rated value":"25 kA","at 500 V rated value":"5 kA","at 690 V rated value":"2 kA","Design Of The Product":"For motor protection","Ground Fault Detection":"No","Phase Failure Detection":"Yes","For Main Current Circuit":"screw-type terminals","Temperature Compensation":"-20 ... +60 °C","at AC at 240 V rated value":"100 kA","at AC at 400 V rated value":"55 kA","at AC at 500 V rated value":"10 kA","at AC at 690 V rated value":"4 kA","Design Of Screwdriver Shaft":"Diameter 5 to 6 mm","Size Of The Circuit-Breaker":"S0","Size Of The Screwdriver Tip":"Pozidriv size 2","at AC-3 rated value maximum":"690 V","Of The Main Contacts Typical":"500","at AC in hot operating state":"10.5 W","at AC-3 at 400 V rated value":"20 A","Of Auxiliary Contacts Typical":"500","Substance Prohibitance (Date)":"10/01/2009","Design Of The Auxiliary Switch":"transverse","Design Of The Overload Release":"thermal","Operating Frequency Rated Value":"50 ... 60 Hz","Operational Current Rated Value":"20 A","Design Of The Short-Circuit Trip":"magnetic","For Auxiliary And Control Circuit":"screw-type terminals","Between Main And Auxiliary Circuit":"400 V","Product Extension Auxiliary Switch":"Yes","Relative Humidity During Operation":"10 ... 95 %","Display Version For Switching Status":"Handle","Surge Voltage Resistance Rated Value":"6 kV","Of The Auxiliary And Control Contacts":"M3","at AC in hot operating state per pole":"3.5 W","reference code according to IEC 81346-2":"Q","Finely Stranded With Core End Processing":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Number Of Poles For Main Current Circuit":"3","Product Function Short Circuit Protection":"Yes","For Main Contacts With Screw-Type Terminals":"2 ... 2.5 N·m","number of CO contacts for auxiliary contacts":"0","number of NC contacts for auxiliary contacts":"1","number of NO contacts for auxiliary contacts":"1","shock resistance according to IEC 60068-2-27":"25g / 11 ms","Electrical Endurance (Switching Cycles) Typical":"500","For Auxiliary Contacts With Screw-Type Terminals":"0.8 ... 1.2 N·m","Size Of Contactor Can Be Combined Company-Specific":"S00, S0","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Arrangement Of Electrical Connectors For Main Current Circuit":"Top and bottom","For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gG: 10 A, miniature circuit breaker C 6 A (short-circuit current Ik < 400 A)","Response Value Current Of Instantaneous Short-Circuit Trip Unit":"260 A","insulation voltage with degree of pollution 3 at AC rated value":"690 V","Product Component Removable Terminal For Auxiliary And Control Circuit":"No","Adjustable Current Response Value Current Of The Current-Dependent Overload Release":"13 ... 20 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/69e3aae776a3a972c11948ccacc118a3.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1088914&mlfb=3RV2021-4BA15-0BA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV2021-4BA15-0BA0/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source to 3RV2021-4BA15-0BA0?","answer":"The 3RV2021-4CA25 is a close sibling within the same SIRIUS 3RV2 family, but the exact trip setting range and terminal configuration differ. Verify the specific motor FLA and coordination study before substituting — the 4BA15-0BA0 has its own unique rating code."},{"question":"Where can I buy 3RV2021-4BA15-0BA0 and how is it quoted?","answer":"This part is sourced through independent industrial-automation distribution and quoted to order against an RFQ. Availability and current pricing are confirmed at quote time — submit an RFQ for a binding commercial offer."},{"question":"Does 3RV2021-4BA15-0BA0 detect phase failure?","answer":"Yes, phase failure detection is built in. The breaker will trip if one line phase is lost, protecting the motor from single-phasing."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV2021-4BA15-0BA0","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/3RV2021-4BA15-0BA0 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}}