{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV1421-0GA15","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV1421-0GA15","canonicalUrl":"https://aoctrl.com/siemens/3RV1421-0GA15","factsUrl":"https://aoctrl.com/api/mcp/products/3RV1421-0GA15","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS circuit breaker for transformer protection, 3RV1421-0GA15, 0.63 A continuous, Trip Class 10, 100 kA breaking capacity at 400 V AC, screw and snap-on 35 mm DIN rail, IP20 front.","salesMarkdown":"The Siemens 3RV1421-0GA15 is a SIRIUS circuit breaker specifically designed for transformer protection, carrying a continuous current rating of 0.63 A and Trip Class 10 thermal overload protection. Its 100 kA breaking capacity holds across all AC voltages up to 690 V — so it can safely interrupt a fault on the secondary side of a small control transformer without upstream coordination headaches. The screw-type terminals on both main and auxiliary circuits accept solid conductors from 0.5 to 2.5 mm² and stranded up to 6 mm², which covers the typical wire sizes for a 0.63 A branch. ## Mounting and integration Mounts via screw or snap-on onto a 35 mm standard mounting rail per DIN EN 50022, with zero clearance required at the sides or rear. The 45 mm width and 96 mm depth fit standard panel layouts; any mounting position is permitted. IP20 on the front means it's protected against finger contact but not washdown — keep it inside a closed enclosure.","metaTitle":"Siemens 3RV1421-0GA15 SIRIUS Circuit Breaker, 0.63 A, Class","metaDescription":"Siemens 3RV1421-0GA15 SIRIUS circuit breaker for transformer protection, 0.63 A continuous, Trip Class 10, 100 kA breaking capacity at 400 V. IP20 front. Available 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 (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Width":"45 mm","Height":"97 mm","at 24 V":"1 A","at 60 V":"0.15 A","Stranded":"2x (1 ... 2.5 mm²), 2x (2.5 ... 6 mm²)","at 230 V":"0.5 A","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","Design Of The Product":"for transformer 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":"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","at AC in hot operating state":"5.5 W","Substance Prohibitance (Date)":"01.05.2012","Continuous Current Rated Value":"0.63 A","Design Of The Auxiliary Switch":"transverse","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 AWG cables for auxiliary contacts":"2x (18 ... 14)","at AC in hot operating state per pole":"1.8 W","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","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":"0.63 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":"0.45 ... 0.63 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=30599&mlfb=3RV1421-0GA15","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV1421-0GA15/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 3RV1421-0GA15 at 400 V?","answer":"100 kA at 400 V AC, and the same 100 kA rating holds at 240 V, 500 V, and 690 V AC — so it provides consistent fault interruption across the full voltage range."},{"question":"What compliance documentation does Siemens provide for 3RV1421-0GA15?","answer":"The part carries a substance prohibitance date of 01.05.2012, indicating RoHS compliance. The SIRIUS series typically includes CE, UL, and CSA certifications; specific approval markings should be verified on the nameplate or via the manufacturer's declaration."},{"question":"Where can I buy 3RV1421-0GA15 and how is it quoted?","answer":"This part is sourced to order through independent distribution. Submit an RFQ for current pricing and availability — quotes are confirmed at the time of request, not from a static listing."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV1421-0GA15","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/3RV1421-0GA15 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}}