{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV1021-1KA10-ZW95","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV1021-1KA10-ZW95","canonicalUrl":"https://aoctrl.com/siemens/3RV1021-1KA10-ZW95","factsUrl":"https://aoctrl.com/api/mcp/products/3RV1021-1KA10-ZW95","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS motor protection circuit breaker, 3RV1021-1KA10-ZW95, 12.5 A continuous, Class 10, 100 kA breaking at 400 V AC, screw terminals, snap-on DIN rail.","salesMarkdown":"## Motor protection circuit breaker, 12.5 A, Class 10 — SIRIUS 3RV1021-1KA10-ZW95 The Siemens 3RV1021-1KA10-ZW95 is a SIRIUS motor protection circuit breaker rated for 12.5 A continuous current and 5.5 kW at 400 V AC, with a Class 10 trip characteristic. It snaps onto a 35 mm DIN rail (DIN EN 50022) and occupies 45 mm width, 97 mm height, and 96 mm depth — a compact footprint for a 3-pole device with screw-type terminals. ## Protection and auxiliary features Ground fault detection is not included. The mechanical life is 100,000 operations typical for the main contacts. Screw-type terminals on the main circuit accept solid or stranded conductors: 2x (1 … 2.5 mm²) and 2x (2.5 … 6 mm²), or AWG 14–10. Finely stranded with core-end processing uses the same cross-sections. This covers most panel wiring up to 6 mm² without needing ferrule adapters. Rated IP20 on the front — suitable for enclosed panels, not for washdown environments. Shock resistance is 25g / 11 ms, so it holds up in transport and moderate vibration. Mounting position is any, giving flexibility in tight enclosures.","metaTitle":"Siemens 3RV1021-1KA10-ZW95 SIRIUS Motor Protection Circuit B","metaDescription":"Siemens 3RV1021-1KA10-ZW95 SIRIUS motor protection circuit breaker, 12.5 A continuous, Class 10 trip, 100 kA breaking at 400 V. Screw terminals, snap-on DIN rail. Sourced 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 (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","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":"5.5 kW","Design Of The Product":"for motor 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":"42 kA","at AC at 690 V rated value":"6 kA","at AC-3 rated value maximum":"690 V","Of The Main Contacts Typical":"100 000","at AC in hot operating state":"9.25 W","Continuous Current Rated Value":"12.5 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":"3.1 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","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","Adjustable Pick-Up Value Current Of The Current-Dependent Overload Release":"9 ... 12.5 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=338570&mlfb=3RV1021-1KA10-ZW95","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV1021-1KA10-ZW95/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings of 3RV1021-1KA10-ZW95?","answer":"It is rated for 12.5 A continuous current, 5.5 kW at 400 V AC, Class 10 trip, with a breaking capacity of 100 kA at 400 V AC and 6 kA at 690 V AC."},{"question":"Where can I buy 3RV1021-1KA10-ZW95 and how is it quoted?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"Does 3RV1021-1KA10-ZW95 include phase failure protection?","answer":"Yes, phase failure detection is built in, so the breaker will trip on loss of a phase to protect the motor from single-phasing."},{"question":"What is the depth of 3RV1021-1KA10-ZW95?","answer":"The depth is 96 mm, with a width of 45 mm and height of 97 mm, fitting a standard 35 mm DIN rail."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV1021-1KA10-ZW95","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/3RV1021-1KA10-ZW95 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}}