{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV1021-0KA15-ZW98","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV1021-0KA15-ZW98","canonicalUrl":"https://aoctrl.com/siemens/3RV1021-0KA15-ZW98","factsUrl":"https://aoctrl.com/api/mcp/products/3RV1021-0KA15-ZW98","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RV1021-0KA15-ZW98 motor protection circuit breaker, 1.25 A continuous rated current, Class 10 trip, 100 kA breaking capacity at 400 V AC, screw-type terminals, IP20 front, for 35 mm DIN rail.","salesMarkdown":"## Product identity and motor protection rating It carries a continuous current rating of 1.25 A and a rated motor power of 0.37 kW at 400 V AC, making it suited for small induction motors — fractional-horsepower pumps, fans, or conveyor drives in a control panel. ## Breaking capacity and fault interruption This breaker delivers 100 kA breaking capacity at 240 V, 400 V, 500 V, and 690 V AC (–). In a panel with a high-available-fault transformer, this lets you avoid a larger upstream breaker. The auxiliary switch contacts are rated 1 A at 24 V, 0.5 A at 230 V, and 0.15 A at 60 V — enough for a PLC digital input or a status lamp. Depth is 96 mm, so it clears a 100 mm-deep enclosure. Terminals are screw-type for the main current circuit. Solid wire sizes accepted: 2× (0.5–1.5 mm²) and 2× (0.75–2.5 mm²); stranded: 2× (1–2.5 mm²) and 2× (2.5–6 mm²). No special ferrules needed, but the 2.5 mm² upper end on stranded matches standard motor leads up to 2.5 mm². Shock resistance 25 g for 11 ms. Maximum altitude 2,000 m.","metaTitle":"Siemens 3RV1021-0KA15-ZW98 SIRIUS Motor Protection Circuit B","metaDescription":"Siemens 3RV1021-0KA15-ZW98 SIRIUS motor protection circuit breaker, 1.25 A continuous current, Class 10 trip, 100 kA breaking capacity at 400 V. Phase failure detection. Current pr","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","Maximum":"2 000 m","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","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":"0.37 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":"100 kA","at AC at 690 V rated value":"100 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":"1.25 A","Design of the auxiliary switch":"transverse","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 (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Number of poles for main current circuit":"3","at AWG conductors for auxiliary contacts":"2x (18 ... 14)","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":"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=46762&mlfb=3RV1021-0KA15-ZW98","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV1021-0KA15-ZW98/alternatives.json"},"ai":{"faq":[{"question":"What is 3RV1021-0KA15-ZW98's listed solid (2x (0.5... 1.5 mm²), 2x (0.75... 2.5 mm²)) on this component line?","answer":"The solid wire sizes accepted are 2× (0.5–1.5 mm²) and 2× (0.75–2.5 mm²). Stranded sizes are 2× (1–2.5 mm²) and 2× (2.5–6 mm²)."},{"question":"Will 3RV1021-0KA15-ZW98 drop into a panel that was specified around 3RV1011-0GA10 without rewiring?","answer":"Both are 45 mm wide and mount on 35 mm DIN rail, so the mechanical footprint is the same. However, the terminal wire ranges differ, and the continuous current rating and trip class must match the motor. Verify the motor FLA and available fault current before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV1021-0KA15-ZW98","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-ZW98 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}}