{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV1421-0AA10","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV1421-0AA10","canonicalUrl":"https://aoctrl.com/siemens/3RV1421-0AA10","factsUrl":"https://aoctrl.com/api/mcp/products/3RV1421-0AA10","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS circuit breaker for transformer protection, 3-pole, 0.16 A rated continuous current, Trip Class 10, 100 kA breaking capacity at 400 V AC, screw terminals, IP20 front, DIN-rail snap-on.","salesMarkdown":"The Siemens 3RV1421-0AA10 is a SIRIUS circuit breaker specifically designed for transformer protection — a 3-pole device rated at 0.16 A continuous current with Trip Class 10, meaning it can handle the inrush of a small transformer without nuisance tripping while still providing short-circuit and overload protection downstream. Its breaking capacity is a flat 100 kA across the full voltage range from 240 V to 690 V AC — that means the same SCCR rating holds regardless of whether the panel is fed from a 400 V or 690 V supply, simplifying coordination studies. The device includes phase failure detection, so if one phase drops out on a three-phase transformer, the breaker trips — preventing single-phasing damage to the load. The 0 mm backward clearance requirement means the breaker can be mounted flush against the back panel. Screw terminals on both the main and auxiliary circuits accept solid or stranded conductors: 2x 1–2.5 mm² or 2x 2.5–6 mm² per terminal, with AWG equivalents 2x 14–10. The front is IP20 and finger-safe, so it can be installed on a live busbar in a closed panel without additional shrouding. The substance prohibition date of 01.05.2012 aligns with RoHS and REACH compliance timelines for this class. Surge voltage withstand is rated at 6 kV, and shock resistance at 25g for 11 ms — suitable for industrial environments with moderate vibration.","metaTitle":"Siemens 3RV1421-0AA10 SIRIUS Circuit Breaker, 0.16 A, Class","metaDescription":"Siemens 3RV1421-0AA10 SIRIUS circuit breaker for transformer protection. 0.16 A rated current, Trip Class 10, 100 kA SCCR at 400 V. IP20, DIN-rail mount. Active production. Request","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","lifecycle_stage":"current","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 in hot operating state":"5.5 W","Operating Voltage Rated Value":"690 V","Substance Prohibitance (Date)":"01.05.2012 00:00:00","Continuous Current Rated Value":"0.16 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","Ambient Temperature During Storage":"-50 ... +80 °C","Product Extension Auxiliary Switch":"Yes","operating frequency at AC-3 maximum":"15 1/h","Ambient Temperature During Operation":"-20 ... +60 °C","Ambient Temperature During Transport":"-50 ... +80 °C","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","operating voltage at AC-3 rated value maximum":"690 V","operational current at AC-3 at 400 V rated value":"0.16 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 Function 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":"0.11 ... 0.16 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=162157&mlfb=3RV1421-0AA10","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV1421-0AA10/alternatives.json"},"ai":{"faq":[{"question":"How do I get pricing and availability for 3RV1421-0AA10?","answer":"Submit an RFQ through the storefront; the part is sourced to order through independent distribution, and current pricing and stock levels are confirmed at quote time."},{"question":"What are the key specifications of 3RV1421-0AA10?","answer":"Rated continuous current is 0.16 A, Trip Class 10, 3-pole, breaking capacity 100 kA at 240–690 V AC, operating temperature -20 to +60 °C, IP20 front, DIN-rail mount."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV1421-0AA10","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/3RV1421-0AA10 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}}