{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV1021-0KA15-ZX95","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV1021-0KA15-ZX95","canonicalUrl":"https://aoctrl.com/siemens/3RV1021-0KA15-ZX95","factsUrl":"https://aoctrl.com/api/mcp/products/3RV1021-0KA15-ZX95","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS motor protection circuit breaker, 3RV1021-0KA15-ZX95, 1.25 A rated continuous current, Class 10 trip, 100 kA breaking capacity at 400 V AC, screw terminals, snap-on 35 mm DIN rail.","salesMarkdown":"The Siemens 3RV1021-0KA15-ZX95 is a SIRIUS motor protection circuit breaker designed for motor protection, rated at 1.25 A continuous current with a Class 10 trip characteristic — meaning it will trip within 10 seconds at 7.2× the thermal setting, fast enough to protect standard induction motors during a locked-rotor event without nuisance tripping on normal starts. It carries a 100 kA breaking capacity at 400 V AC (and at 240 V, 500 V, and 690 V as well), so it can safely interrupt fault currents up to that level without upstream fuses or a larger breaker — a real space saver in a crowded panel. The auxiliary switch is transverse design and the product extension for an auxiliary switch is available, so you can add a remote status contact without changing the breaker footprint. Main circuit terminals accept solid 2x (0.5…1.5 mm²) and 2x (0.75…2.5 mm²), stranded 2x (1…2.5 mm²) and 2x (2.5…6 mm²), or AWG 2x (14…10). Auxiliary and control circuit terminals are also screw-type, same wire ranges. RoHS compliance date is 01.05.2012, meaning it meets the EU RoHS directive as of that date. No REACH or UL listing is explicitly stated in the evidence, but the SIRIUS series typically carries UL/CSA certification — confirm with your compliance team if your BOM requires a specific cert number.","metaTitle":"Siemens 3RV1021-0KA15-ZX95 SIRIUS Motor Protection CB, 1.25","metaDescription":"Siemens 3RV1021-0KA15-ZX95 SIRIUS motor protection circuit breaker, 1.25 A continuous, Class 10 trip, 100 kA breaking at 400 V. Active production. Quoted to order.","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 (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Width":"45 mm","Height":"97 mm","at 24 V":"1 A","at 60 V":"0.15 A","Stranded":"2x (1 ... 2.5 mm²), 2x (2.5 ... 6 mm²)","at 230 V":"0.5 A","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","at 400 V rated value":"0.37 kW","Design Of The Product":"for motor 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":"1.25 A","Design Of The Auxiliary Switch":"transverse","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 AWG cables for auxiliary contacts":"2x (18 ... 14)","at AC in hot operating state per pole":"2.4 W","Finely Stranded With Core End Processing":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 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":"1.25 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":"0.9 ... 1.25 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=15050&mlfb=3RV1021-0KA15-ZX95","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV1021-0KA15-ZX95/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV1021-0KA15-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/3RV1021-0KA15-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}}