{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV1421-1AA10-ZX95","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV1421-1AA10-ZX95","canonicalUrl":"https://aoctrl.com/siemens/3RV1421-1AA10-ZX95","factsUrl":"https://aoctrl.com/api/mcp/products/3RV1421-1AA10-ZX95","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS circuit breaker for transformer protection, order code 3RV1421-1AA10-ZX95, 1.6 A rated current, 100 kA breaking capacity at 400 V, Class 10 trip, 3-pole, screw terminals, IP20 front, DIN rail mount.","salesMarkdown":"## Transformer-protection circuit breaker, 1.6 A, 100 kA The Siemens SIRIUS 3RV1421-1AA10-ZX95 is a 3-pole circuit breaker designed specifically for transformer protection, rated at 1.6 A continuous current with a 100 kA breaking capacity across 240 V, 400 V, 500 V, and 690 V AC — meaning it clears faults up to that level without upstream coordination issues. Trip Class 10 gives it a thermal overload response fast enough to protect transformer windings during inrush without nuisance tripping on normal magnetization peaks. ## Ratings that matter for the BOM line Rated operational voltage goes to 690 V AC, with AC-3 switching rated at the same 690 V maximum. Power dissipation runs 7.25 W hot total, 2.4 W per pole — low enough that multiple units side-by-side on the rail stay within a standard enclosure's thermal budget. Screw terminals on both main and auxiliary circuits accept solid or stranded wire: 2x (1 to 2.5 mm²) and 2x (2.5 to 6 mm²), with AWG equivalents 2x (14 to 10). RoHS compliance date is 01.05.2012; the part carries substance prohibitance documentation for EU markets. Shock rated at 25 g for 11 ms, which covers typical panel vibration from contactors and drives cycling nearby. Maximum operating frequency in AC-3 duty is 15 operations per hour — not a high-cycling device; for frequent switching look at the contactor paired with this breaker. Surge voltage resistance rated at 6 kV.","metaTitle":"Siemens 3RV1421-1AA10-ZX95 SIRIUS Circuit Breaker, 1.6 A, 10","metaDescription":"Siemens SIRIUS 3RV1421-1AA10-ZX95 circuit breaker for transformer protection, 1.6 A rated current, 100 kA breaking capacity at 400 V, Class 10 trip, IP20 front, DIN rail mount. Ava","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":"7.25 W","Substance Prohibitance (Date)":"01.05.2012","Continuous Current Rated Value":"1.6 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":"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","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":"1.6 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":"1.1 ... 1.6 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=116665&mlfb=3RV1421-1AA10-ZX95","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV1421-1AA10-ZX95/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV1421-1AA10-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/3RV1421-1AA10-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}}