{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV1421-0DA10-ZI41","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV1421-0DA10-ZI41","canonicalUrl":"https://aoctrl.com/siemens/3RV1421-0DA10-ZI41","factsUrl":"https://aoctrl.com/api/mcp/products/3RV1421-0DA10-ZI41","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS circuit breaker, 3RV1421-0DA10-ZI41, for transformer protection, 0.32 A continuous, CLASS 10, 100 kA at 400 V, screw terminals, snap-on 35 mm DIN rail, IP20.","salesMarkdown":"The Siemens SIRIUS 3RV1421-0DA10-ZI41 is a three-pole circuit breaker designed specifically for transformer protection, rated at 0.32 A continuous current with a CLASS 10 trip characteristic — meaning it allows the inrush of a transformer without nuisance tripping while still clearing a sustained overload within 10 seconds at 7.2× Iₑ. Mounts via screw and snap-on onto 35 mm standard mounting rail per DIN EN 50022, and the 45 mm width (three 15 mm modules) fits standard DIN-rail enclosures — backwards and side clearances are both 0 mm, meaning it can be butted directly against adjacent devices. ## Integration & Wiring Main and auxiliary/control circuits both terminate at screw-type terminals; the main circuit accepts solid or stranded conductors from 1 to 6 mm² (2x per terminal), and AWG 14–10 for the main contacts. Finger-safe touch protection (IP20 on the front) means the terminals are guarded against accidental contact — no extra shrouding needed in a standard panel. The product accepts an auxiliary switch extension (sold separately), though the base unit ships with zero CO contacts for auxiliary contacts. ## Environmental & Mechanical Power dissipation in hot operating state is 5.5 W total (1.8 W per pole), so thermal management in a crowded cabinet is straightforward.","metaTitle":"Siemens 3RV1421-0DA10-ZI41 SIRIUS Circuit Breaker, 0.32 A, C","metaDescription":"Siemens SIRIUS 3RV1421-0DA10-ZI41 circuit breaker for transformer protection, 0.32 A continuous, CLASS 10 trip, 100 kA breaking capacity at 400 V, IP20, screw terminals, snap-on 35","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","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","Continuous Current Rated Value":"0.32 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":"1.8 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":"0.32 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":"0.22 ... 0.32 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=530605&mlfb=3RV1421-0DA10-ZI41","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV1421-0DA10-ZI41/alternatives.json"},"ai":{"faq":[{"question":"What is the depth of 3RV1421-0DA10-ZI41?","answer":"The depth is 96 mm."},{"question":"What solid wire sizes does the main circuit accept?","answer":"The main circuit screw terminals accept 2x (1 … 2.5 mm²) and 2x (2.5 … 6 mm²) solid conductors."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV1421-0DA10-ZI41","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/3RV1421-0DA10-ZI41 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}}