{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV2021-1BA25","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV2021-1BA25","canonicalUrl":"https://aoctrl.com/siemens/3RV2021-1BA25","factsUrl":"https://aoctrl.com/api/mcp/products/3RV2021-1BA25","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RV2021-1BA25, motor protection circuit breaker, 2 A at 480 V, 100 kA SCCR at 400 V, Trip Class 10, screw and snap-on DIN rail mount.","salesMarkdown":"Rated 2 A at 480 V and 2 A at 600 V, it delivers 100 kA SCCR at 400 V and 240 V — enough to coordinate with most downstream contactors in a standard MCC lineup. The spring-loaded terminals accept 2x 0.5…2.5 mm² solid or stranded, and the breaker mounts via screw or snap-on onto 35 mm DIN rail per DIN EN 60715. Ground fault detection is not included; if ground-fault protection is required, add a separate RCD or GFCI module upstream. Minimum clearance to adjacent components: 50 mm upwards, 50 mm downwards, 30 mm at the side, and 0 mm forwards and backwards — meaning it can be mounted flush against the back panel and enclosure door, saving rail space in a tight cabinet. ## Switching capacity and auxiliary contacts Auxiliary contact ratings: 1 A at 24 V, 0.5 A at 120 V/125 V/230 V, and 0.15 A at 60 V — these are the current-carrying limits for the built-in auxiliary switch, not the main motor circuit. The main circuit is rated for 100 kA SCCR at 240 V, 400 V, and 500 V, dropping to 10 kA at 690 V. Maximum switching frequency is 15 operations per hour under AC-3 and AC-3e duty — fine for a pump or fan cycling a few times an hour, not for a high-cycle conveyor.","metaTitle":"Siemens 3RV2021-1BA25 SIRIUS Motor Protection Circuit Breake","metaDescription":"Siemens 3RV2021-1BA25 SIRIUS motor protection circuit breaker, 2 A rated at 480 V, 100 kA SCCR at 400 V, Trip Class 10. Available to order, quoted on request.","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","title":"3RV2021-1BA25","Height":"119 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","Backwards":"0 mm","Downwards":"50 mm","Trip Class":"CLASS 10","At The Side":"30 mm","Rated Value":"20 ... 690 V","description":"Circuit breaker size S0 for motor protection, CLASS 10 A-release 1.4...2 A N-release 26 A Spring-type terminal Standard switching capacity with transverse auxiliary switches 1 NO+1 NC","During Storage":"-50 ... +80 °C","at AC-3 maximum":"15 1/h","lifecycle_stage":"current","During Operation":"-20 ... +60 °C","During Transport":"-50 ... +80 °C","Fastening Method":"screw and snap-on mounting onto 35 mm DIN rail according to DIN EN 60715","at AC-3e maximum":"15 1/h","Mounting Position":"any","Solid Or Stranded":"2x (0.5 ... 2.5 mm²)","Product Brand Name":"SIRIUS","Product Designation":"Circuit breaker","at 230 V rated value":"0.13 hp","at 240 V rated value":"100 kA","at 400 V rated value":"100 kA","at 480 V rated value":"2 A","at 500 V rated value":"100 kA","at 600 V rated value":"2 A","at 690 V rated value":"10 kA","Design Of The Product":"For motor protection","Ground Fault Detection":"No","Phase Failure Detection":"Yes","For Main Current Circuit":"spring-loaded terminals","at 460/480 V rated value":"1 hp","at 575/600 V rated value":"1 hp","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":"10 kA","Design Of Screwdriver Shaft":"Diameter 3 mm","Size Of The Circuit-Breaker":"S0","Size Of The Screwdriver Tip":"3,0 x 0,5 mm","at AC-3 rated value maximum":"690 V","Of The Main Contacts Typical":"100 000","at AC in hot operating state":"7.25 W","at AC-3 at 400 V rated value":"2 A","at AC-3e rated value maximum":"690 V","Of Auxiliary Contacts Typical":"100 000","Substance Prohibitance (Date)":"10/01/2009","at AC-3e at 400 V rated value":"2 A","Design Of The Auxiliary Switch":"transverse","Design Of The Overload Release":"thermal","Operating Frequency Rated Value":"50 ... 60 Hz","Operational Current Rated Value":"2 A","at AWG cables for main contacts":"2x (18 ... 8)","Design Of The Short-Circuit Trip":"magnetic","For Auxiliary And Control Circuit":"spring-loaded terminals","Product Extension Auxiliary Switch":"Yes","Relative Humidity During Operation":"10 ... 95 %","Display Version For Switching Status":"Handle","Surge Voltage Resistance Rated Value":"6 kV","at AWG cables for auxiliary contacts":"2x (20 ... 14)","at AC in hot operating state per pole":"2.4 W","With Side-By-Side Mounting At The Side":"0 mm","reference code according to IEC 81346-2":"Q","Finely Stranded With Core End Processing":"2x (0.5 ... 1.5 mm²)","Number Of Poles For Main Current Circuit":"3","Product Function Short Circuit Protection":"Yes","with low demand rate according to SN 31920":"50 FIT","Finely Stranded Without Core End Processing":"2x (0.5 ... 1.5 mm²)","with high demand rate according to SN 31920":"50 %","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 (Operating Cycles) Typical":"100 000","Size Of Contactor Can Be Combined Company-Specific":"S00, S0","contact rating of auxiliary contacts according to UL":"C300 / R300","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 gL/gG: 10 A, miniature circuit breaker C 6 A (short-circuit current Ik < 400 A)","Response Value Current Of Instantaneous Short-Circuit Trip Unit":"26 A","insulation voltage with degree of pollution 3 at AC rated value":"690 V","Adjustable Current Response Value Current Of The Current-Dependent Overload Release":"1.4 ... 2 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"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=528291&mlfb=3RV2021-1BA25"},"ai":{"faq":[{"question":"Where can I buy 3RV2021-1BA25 and how do I get a price?","answer":"This part is sourced and quoted to order through independent distribution. Submit an RFQ for current pricing and availability."},{"question":"Will 3RV2021-1BA25 drop into a panel specified for 3RV2021-1GA25 without rewiring?","answer":"Both breakers share the same 45 mm width, 97 mm depth, and DIN rail mounting, so physical fit is identical. The 3RV2021-1BA25 is rated 2 A at 480 V; the 3RV2021-1GA25 carries a different current rating. Verify the load current matches the breaker's rating before substitution."},{"question":"What compliance documentation does Siemens provide for 3RV2021-1BA25?","answer":"Siemens SIRIUS breakers typically carry UL, CSA, CE, and IEC certifications. Specific documentation (RoHS, REACH, UL file number) is available on request at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV2021-1BA25","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/3RV2021-1BA25 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}