{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV2021-1CA10-ZW96","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV2021-1CA10-ZW96","canonicalUrl":"https://aoctrl.com/siemens/3RV2021-1CA10-ZW96","factsUrl":"https://aoctrl.com/api/mcp/products/3RV2021-1CA10-ZW96","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS motor protection circuit breaker, 3RV2021-1CA10-ZW96, Class 10 trip, 100 kA breaking capacity at 400 V, 45 mm wide, screw and snap-on DIN rail mounting.","salesMarkdown":"The Siemens SIRIUS 3RV2021-1CA10-ZW96 is a motor protection circuit breaker, designed to protect motors against overload and short-circuit. It carries a Class 10 trip characteristic, meaning it will trip within 10 seconds at 7.2 times the thermal setting — the standard for protecting standard induction motors during start-up. The unit is rated for a breaking capacity of 100 kA at 400 V AC, so it can safely interrupt fault currents up to that level without upstream fuses needing to clear first. ## Mounting and panel fit Mounts via screw or snap-on onto 35 mm DIN rail per DIN EN 60715. The 45 mm width and 97 mm depth mean it takes up a single 45 mm module slot on the rail — that's another SKU that fits a standard panel layout without surprises. Mounting position is any, so it works in horizontal or vertical bus runs. Clearance: 50 mm above and below, 30 mm to the side, zero forward or backward. ## Key ratings and what they mean for the line Phase failure detection is built in — if one phase drops out, the breaker trips, preventing single-phasing damage to the motor. Ground fault detection is not included; that's handled separately by a GFCI or residual current device if required. The operating temperature range is -20 to +60 °C, which covers most indoor panel environments but not direct sun or oven-adjacent locations. Storage and transport range is -50 to +80 °C.","metaTitle":"Siemens 3RV2021-1CA10-ZW96 SIRIUS Motor Protection Circuit B","metaDescription":"Siemens SIRIUS 3RV2021-1CA10-ZW96 motor protection circuit breaker. Class 10 trip, 100 kA breaking capacity at 400 V, 45 mm wide. Current lifecycle. Available to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Motor Protection Circuit Breakers (MPCB)"],"specifications":{"Depth":"97 mm","Width":"45 mm","Height":"97 mm","Upwards":"50 mm","Forwards":"0 mm","Backwards":"0 mm","Downwards":"50 mm","Trip Class":"CLASS 10","At The Side":"30 mm","Rated Value":"20 ... 690 V","During Storage":"-50 ... +80 °C","at AC-3 maximum":"15 1/h","lifecycle_stage":"current","During Operation":"-20 ... +60 °C","During Transport":"-50 ... +80 °C","Fastening Method":"screw and snap-on mounting onto 35 mm DIN rail according to DIN EN 60715","at AC-3e maximum":"15 1/h","For Main Contacts":"M4","Mounting Position":"any","Solid Or Stranded":"2x (1 ... 2.5 mm²), 2x (2.5 ... 10 mm²)","Product Brand Name":"SIRIUS","Product Designation":"Circuit breaker","at 230 V rated value":"0.17 hp","at 240 V rated value":"100 kA","at 400 V rated value":"100 kA","at 480 V rated value":"2.5 A","at 500 V rated value":"100 kA","at 600 V rated value":"2.5 A","at 690 V rated value":"10 kA","Design Of The Product":"For motor protection","Ground Fault Detection":"No","Phase Failure Detection":"Yes","For Main Current Circuit":"screw-type terminals","at 200/208 V rated value":"0.5 hp","at 220/230 V rated value":"0.5 hp","at 460/480 V rated value":"1 hp","at 575/600 V rated value":"1.5 hp","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":"10 kA","Design Of Screwdriver Shaft":"Diameter 5 to 6 mm","Size Of The Circuit-Breaker":"S0","Size Of The Screwdriver Tip":"Pozidriv size 2","at AC-3 rated value maximum":"690 V","Of The Main Contacts Typical":"100 000","at AC in hot operating state":"7.25 W","at AC-3 at 400 V rated value":"2.5 A","at AC-3e rated value maximum":"690 V","Of Auxiliary Contacts Typical":"100 000","Substance Prohibitance (Date)":"10/01/2009","at AC-3e at 400 V rated value":"2.5 A","Design Of The Overload Release":"thermal","Operating Frequency Rated Value":"50 ... 60 Hz","Operational Current Rated Value":"2.5 A","Design Of The Short-Circuit Trip":"magnetic","for AWG cables for main contacts":"2x (16 ... 12), 2x (14 ... 8)","Product Extension Auxiliary Switch":"Yes","Relative Humidity During Operation":"10 ... 95 %","Display Version For Switching Status":"Handle","Surge Voltage Resistance Rated Value":"6 kV","at AC in hot operating state per pole":"2.4 W","With Side-By-Side Mounting At The Side":"0 mm","reference code according to IEC 81346-2":"Q","Finely Stranded With Core End Processing":"2x (1 ... 2.5 mm²), 2x (2.5 ... 6 mm²), 1x 10 mm²","Number Of Poles For Main Current Circuit":"3","Product Function Short Circuit Protection":"Yes","with low demand rate according to SN 31920":"50 FIT","For Main Contacts With Screw-Type Terminals":"2 ... 2.5 N·m","with high demand rate according to SN 31920":"50 %","number of CO contacts for auxiliary contacts":"0","number of NC contacts for auxiliary contacts":"0","number of NO contacts for auxiliary contacts":"0","shock resistance according to IEC 60068-2-27":"25g / 11 ms","Electrical Endurance (Operating Cycles) Typical":"100 000","Size Of Contactor Can Be Combined Company-Specific":"S00, S0","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Arrangement Of Electrical Connectors For Main Current Circuit":"Top and bottom","Response Value Current Of Instantaneous Short-Circuit Trip Unit":"33 A","insulation voltage with degree of pollution 3 at AC rated value":"690 V","Adjustable Current Response Value Current Of The Current-Dependent Overload Release":"1.8 ... 2.5 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/69e3aae776a3a972c11948ccacc118a3.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=157627&mlfb=3RV2021-1CA10-ZW96","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV2021-1CA10-ZW96/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RV2021-1CA10-ZW96 and get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Submit an RFQ for current availability and pricing."},{"question":"What is the depth of 3RV2021-1CA10-ZW96?","answer":"The depth is 97 mm."},{"question":"What is the width of 3RV2021-1CA10-ZW96?","answer":"The width is 45 mm, occupying one standard DIN-rail module slot."},{"question":"Will 3RV2021-1CA10-ZW96 drop into a panel specified around 3RV2021-1FA15?","answer":"Both are SIRIUS motor protection circuit breakers on the same 45 mm DIN-rail footprint, so the mechanical fit is the same. However, the 3RV2021-1FA15 has different current ratings and trip settings; verify the motor FLA matches the new breaker's adjustable range before swapping."},{"question":"What compliance documentation does this part carry?","answer":"As a Siemens SIRIUS product, it typically carries UL, CSA, CE, and CCC certifications, plus RoHS and REACH compliance. Specific documentation is available on request with the RFQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV2021-1CA10-ZW96","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/3RV2021-1CA10-ZW96 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}}