{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV1021-4CA10-ZW95","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV1021-4CA10-ZW95","canonicalUrl":"https://aoctrl.com/siemens/3RV1021-4CA10-ZW95","factsUrl":"https://aoctrl.com/api/mcp/products/3RV1021-4CA10-ZW95","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS motor protection circuit breaker, 3RV1021-4CA10-ZW95, 22 A continuous, 11 kW at 400 V AC-3, CLASS 10 trip, screw terminals, snap-on DIN rail.","salesMarkdown":"The Siemens SIRIUS 3RV1021-4CA10-ZW95 is a motor protection circuit breaker rated for 22 A continuous current and 11 kW at 400 V in AC-3 duty — that's the motor-switching rating, so it directly covers a 22 A full-load motor on a 400 V line. ## Short-circuit breaking capacity — where this breaker holds and where it doesn't The SCCR (short-circuit current rating) varies sharply with line voltage: 100 kA at 240 V AC, 50 kA at 400 V AC, 10 kA at 500 V AC, and 4 kA at 690 V AC. At 400 V, the 50 kA rating covers most industrial service-entrance conditions. ## Terminal capacity and wiring constraints Main circuit terminals accept screw-type connections: solid or stranded conductors 2× (1 … 2.5 mm²) and 2× (2.5 … 6 mm²), or AWG 2× (14 … 10). That's two conductors per terminal, which is useful for daisy-chaining power through the breaker. Finely stranded with core-end processing (ferrules) uses the same ranges. No auxiliary contacts are included as standard — the listing shows 0 for auxiliary contacts, but the device has an auxiliary switch slot (yes) if you need to add one later. ## Environmental limits and mechanical endurance Shock resistance is 25g for 11 ms. The main contacts are rated for 100,000 typical mechanical operations.","metaTitle":"Siemens 3RV1021-4CA10-ZW95 SIRIUS Motor Protection Circuit B","metaDescription":"Siemens SIRIUS 3RV1021-4CA10-ZW95 motor protection circuit breaker. 22 A continuous, 11 kW at 400 V, CLASS 10 trip, phase failure detection. Current lifecycle stage. Sourced to ord","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":"11 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":"50 kA","at AC at 500 V rated value":"10 kA","at AC at 690 V rated value":"4 kA","at AC-3 rated value maximum":"690 V","Of The Main Contacts Typical":"100 000","at AC in hot operating state":"10.5 W","Continuous current rated value":"22 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":"3.5 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":"17 ... 22 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=178895&mlfb=3RV1021-4CA10-ZW95","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV1021-4CA10-ZW95/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RV1021-4CA10-ZW95 and what is the lead time?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm lead-time and price commitment."},{"question":"What is the closest functional alternative to 3RV1021-4CA10-ZW95?","answer":"The 3RV1011-1HA10 is a smaller-frame SIRIUS motor protection breaker (lower current rating, different trip class). It will not drop into the same panel without rewiring — the terminal ranges and mounting footprint differ. For a direct replacement, stick with the 3RV1021-4CA10-ZW95."},{"question":"What compliance documentation does Siemens provide for this part?","answer":"The evidence does not list specific compliance documents (RoHS, REACH, UL, IEC) for this order code. Standard Siemens SIRIUS breakers carry UL/CSA/CE markings per the series; confirm the exact certification package with the RFQ."},{"question":"What is the depth of 3RV1021-4CA10-ZW95?","answer":"The depth is 96 mm. Width is 45 mm, height is 97 mm. Clearance requirements: 0 mm backwards and 0 mm at the sides."},{"question":"What conductor sizes does the main circuit accept?","answer":"Solid and stranded conductors: 2x (1 … 2.5 mm²) and 2x (2.5 … 6 mm²), or AWG 2x (14 … 10). Finely stranded with ferrules uses the same ranges."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV1021-4CA10-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/3RV1021-4CA10-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}}