{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV1421-1DA10-ZX95","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV1421-1DA10-ZX95","canonicalUrl":"https://aoctrl.com/siemens/3RV1421-1DA10-ZX95","factsUrl":"https://aoctrl.com/api/mcp/products/3RV1421-1DA10-ZX95","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RV1421-1DA10-ZX95, circuit breaker for transformer protection, 3.2 A continuous, 100 kA breaking at 400 V AC, Class 10 trip, screw terminals, 45 x 97 x 96 mm.","salesMarkdown":"The Siemens 3RV1421-1DA10-ZX95 is a SIRIUS circuit breaker specifically designed for transformer protection, rated at 3.2 A continuous current and 3.2 A at 400 V AC-3 duty. Its Class 10 trip class means it handles inrush without nuisance tripping on transformer magnetizing currents — a common pain point with general-purpose breakers on a transformer primary. Breaking capacity is 100 kA at 240 V, 400 V, and 500 V AC, dropping to 8 kA at 690 V AC. That 100 kA figure at 400 V gives you serious fault-current headroom in a panel with high available short-circuit current — no need for upstream current-limiting fuses in most industrial distributions. Main circuit connections use screw-type terminals accepting 2x (1... 2.5 mm²) solid or stranded, or 2x (2.5... 6 mm²) — covers standard panel wire up to 6 mm². AWG equivalents are 2x (14... 10). No auxiliary contacts are fitted as standard (0 provided), so if you need status feedback to a PLC, plan for a separate auxiliary switch block. Zero clearance required at the sides or rear for ventilation (0 mm backwards, 0 mm at the side), so you can pack devices tight in the enclosure. Power dissipation is 7.25 W total in hot operating state at AC, or 2.4 W per pole. That's modest for a 3.2 A device, but in a densely populated panel with multiple breakers, the cumulative heat still needs to be considered in the enclosure thermal calculation. Shock resistance is 25 g for 11 ms. Maximum altitude is 2,000 m. Mechanical endurance is 100,000 operating cycles typical for the main contacts.","metaTitle":"Siemens 3RV1421-1DA10-ZX95 SIRIUS Circuit Breaker, 3.2 A, Cl","metaDescription":"Siemens 3RV1421-1DA10-ZX95 SIRIUS circuit breaker for transformer protection, 3.2 A continuous, 100 kA breaking capacity at 400 V AC, Class 10 trip. Current lifecycle. Quoted to or","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":"-20 ... +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":"3.2 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":"8 kA","at AC-3 rated value maximum":"690 V","Of The Main Contacts Typical":"100 000","at AC in hot operating state":"7.25 W","Continuous current rated value":"3.2 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":"2.2 ... 3.2 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=42218&mlfb=3RV1421-1DA10-ZX95","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV1421-1DA10-ZX95/alternatives.json"},"ai":{"faq":[{"question":"What is 3RV1421-1DA10-ZX95's listed depth?","answer":"The depth is 96 mm, with width 45 mm and height 97 mm. Zero clearance required at the sides or rear."},{"question":"What wire sizes does 3RV1421-1DA10-ZX95 accept?","answer":"Screw terminals accept 2x (1... 2.5 mm²) solid or stranded, or 2x (2.5... 6 mm²). AWG equivalents are 2x (14... 10). Finely stranded with core end processing uses the same ranges."},{"question":"Will 3RV1421-1DA10-ZX95 drop into a panel specified around 3RV6011-0CA10 without rewiring?","answer":"Not without verification. The 3RV1421-1DA10-ZX95 is a 3RV14 series transformer-protection breaker; the 3RV6011-0CA10 is a 3RV6 series general-purpose breaker. While both mount on 35 mm DIN rail, the terminal layout, width, and trip characteristics differ. Check the mounting footprint and terminal positions against your existing panel layout before assuming a direct swap."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV1421-1DA10-ZX95","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/3RV1421-1DA10-ZX95 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}}