{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV1421-1GA10-0BA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV1421-1GA10-0BA0","canonicalUrl":"https://aoctrl.com/siemens/3RV1421-1GA10-0BA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RV1421-1GA10-0BA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RV1421-1GA10-0BA0, circuit breaker for transformer protection, 6.3 A rated continuous current, CLASS 10 trip class, 100 kA breaking capacity at 400 V AC, screw-type terminals, 45 mm width.","salesMarkdown":"The Siemens 3RV1421-1GA10-0BA0 is a SIRIUS-brand circuit breaker specifically designed for transformer protection. It carries a rated continuous current of 6.3 A and a CLASS 10 trip characteristic, meaning it will trip within 10 seconds at 7.2× rated current — fast enough to protect a transformer winding from sustained overload but coordinated to ride through inrush. Breaking capacity is 100 kA at 240 V, 400 V, and 500 V AC, dropping to 6 kA at 690 V AC. No ground-fault detection on this variant. Zero clearance needed above or below (0 mm backwards, 0 mm at the sides), so you can pack it tight against other devices on the rail. Main circuit terminals are screw-type, accepting 2x (1…2.5 mm²) solid or 2x (2.5…6 mm²) stranded. AWG equivalents are 2x (14…10). ## Environmental and electrical ratings Operates from -50 °C to +60 °C ambient, with storage and transport range extending to -50…+80 °C. Shock-rated at 25 g for 11 ms. Power dissipation runs 7.25 W total in hot operating state (2.4 W per pole) — thermal management is straightforward in a standard IP20 enclosure. Mechanical endurance is 500 operations of the main contacts typical. Maximum switching frequency at AC-3 duty is 15 operations per hour.","metaTitle":"Siemens 3RV1421-1GA10-0BA0 SIRIUS Circuit Breaker, 6.3 A, Tr","metaDescription":"Siemens 3RV1421-1GA10-0BA0 SIRIUS circuit breaker, 6.3 A rated current, CLASS 10 trip, 100 kA breaking at 400 V, for transformer protection. DIN rail mount. Quoted 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":"-50 ... +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":"6.3 A","Design of the product":"for transformer 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":"6 kA","at AC-3 rated value maximum":"690 V","Of The Main Contacts Typical":"500","at AC in hot operating state":"7.25 W","Continuous current rated value":"6.3 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":"2.4 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":"4.5 ... 6.3 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=208214&mlfb=3RV1421-1GA10-0BA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV1421-1GA10-0BA0/alternatives.json"},"ai":{"faq":[{"question":"What is 3RV1421-1GA10-0BA0 used for?","answer":"It is a circuit breaker designed specifically for transformer protection, with a 6.3 A continuous rating, CLASS 10 trip, and phase failure detection. It protects transformer windings from overload and short circuits while coordinating with inrush current."},{"question":"What breaking capacity does 3RV1421-1GA10-0BA0 have?","answer":"It offers 100 kA breaking capacity at 240 V, 400 V, and 500 V AC, and 6 kA at 690 V AC. The 100 kA rating at 400 V covers most industrial panel fault levels without needing upstream fusing."},{"question":"Where can I buy 3RV1421-1GA10-0BA0?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm offer."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV1421-1GA10-0BA0","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/3RV1421-1GA10-0BA0 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}}