{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV1421-1CA10-ZX95","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV1421-1CA10-ZX95","canonicalUrl":"https://aoctrl.com/siemens/3RV1421-1CA10-ZX95","factsUrl":"https://aoctrl.com/api/mcp/products/3RV1421-1CA10-ZX95","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS circuit breaker, 3RV1421-1CA10-ZX95, for transformer protection, 2.5 A at 400 V, 100 kA breaking capacity, CLASS 10 trip class, screw-type terminals, DIN rail mount.","salesMarkdown":"Rated 2.5 A at 400 V with a CLASS 10 trip class, it gives you a 10-second maximum trip time at 7.2× rated current, which is the standard for protecting motor and transformer circuits against sustained overloads. Ground fault detection is not included, so if you need that, you pair this with a separate ground-fault relay or use a different variant. ## Mounting and integration — panel fit Depth is 96 mm, height 97 mm. Zero clearance needed at the sides or rear, so you can pack modules tight. Mounting position is any, which helps in cramped enclosures where you have to orient the rail vertically. Terminals on the main current circuit are screw-type, accepting solid or stranded conductors from 1 to 6 mm² (2x 1...2.5 mm² and 2x 2.5...6 mm² per terminal). AWG equivalents are 14 to 10 for the main contacts. ## Environmental and electrical ratings — what they mean for the panel Shock resistance is 25g for 11 ms — fine for normal industrial vibration, but if the breaker is mounted directly on a vibrating machine (crusher, mill), you may want additional damping. Surge voltage resistance is 6,000 V. Power loss in hot operating state is 7.25 W total, 2.4 W per pole. Mechanical endurance of main contacts is 100,000 cycles typical.","metaTitle":"Siemens 3RV1421-1CA10-ZX95 SIRIUS Circuit Breaker, 2.5 A, CL","metaDescription":"Siemens 3RV1421-1CA10-ZX95 SIRIUS circuit breaker for transformer protection. 2.5 A at 400 V, 100 kA breaking capacity, CLASS 10 trip, phase failure detection. Current production.","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":"2.5 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":"2.5 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":"1.8 ... 2.5 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=46127&mlfb=3RV1421-1CA10-ZX95","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV1421-1CA10-ZX95/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV1421-1CA10-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/3RV1421-1CA10-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}}