{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV1021-0KA10-ZW97","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV1021-0KA10-ZW97","canonicalUrl":"https://aoctrl.com/siemens/3RV1021-0KA10-ZW97","factsUrl":"https://aoctrl.com/api/mcp/products/3RV1021-0KA10-ZW97","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS motor protection circuit breaker, 3RV1021-0KA10-ZW97, 1.25 A rated continuous current, CLASS 10 trip class, 100 kA breaking capacity at 400 V AC, 45 mm width, screw and snap-on DIN rail mounting.","salesMarkdown":"## Motor protection circuit breaker, 1.25 A, CLASS 10 — SIRIUS 3RV1021-0KA10-ZW97 The Siemens 3RV1021-0KA10-ZW97 is a SIRIUS motor protection circuit breaker rated for 1.25 A continuous current, sized for a 0.37 kW motor at 400 V AC. No ground fault detection on this variant. ## Mounting and wiring — DIN rail, 45 mm wide, screw terminals The 45 mm width fits a standard 9 mm pitch panel layout — five modules wide. Depth is 96 mm, height 97 mm, leaving clearance for adjacent devices and wire bends. No side or backward clearance required. Main circuit terminals accept solid or stranded conductors: 2× (1…2.5 mm²) and 2× (2.5…6 mm²), or AWG 14–10. Screw-type terminals — torque to the manufacturer's spec for reliable connection. No auxiliary contacts included (0 supplied), but an auxiliary switch can be added externally. Shock resistance is 25 g for 11 ms — suitable for machine-mounted applications with moderate vibration. Mechanical endurance of the main contacts is typically 100,000 operations. Maximum switching rate at AC-3 duty is 15 operations per hour.","metaTitle":"Siemens 3RV1021-0KA10-ZW97 SIRIUS Motor Protection Circuit B","metaDescription":"Siemens SIRIUS 3RV1021-0KA10-ZW97 motor protection circuit breaker, 1.25 A continuous, CLASS 10 trip, 100 kA breaking capacity at 400 V. 45 mm wide, DIN rail mount. Available to or","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","Maximum":"2 000 m","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":"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","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 (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","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=83954&mlfb=3RV1021-0KA10-ZW97","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV1021-0KA10-ZW97/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 3RV1021-0KA10-ZW97?","answer":"100 kA at 240 V, 400 V, 500 V, and 690 V AC — high enough for most industrial fault-level panels without upstream fusing."},{"question":"What wire sizes does the 3RV1021-0KA10-ZW97 accept?","answer":"Screw terminals accept solid or stranded conductors: 2× (1…2.5 mm²) and 2× (2.5…6 mm²), or AWG 14–10."},{"question":"Where can I buy 3RV1021-0KA10-ZW97 and get current pricing?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Submit a request for current pricing and availability — confirmed at quote time."},{"question":"Does 3RV1021-0KA10-ZW97 have phase failure protection?","answer":"Yes, phase failure detection is built in. It trips on loss of one phase to prevent single-phasing motor damage. No ground fault detection on this variant."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV1021-0KA10-ZW97","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/3RV1021-0KA10-ZW97 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}}