{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV1021-0KA10-ZW96","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV1021-0KA10-ZW96","canonicalUrl":"https://aoctrl.com/siemens/3RV1021-0KA10-ZW96","factsUrl":"https://aoctrl.com/api/mcp/products/3RV1021-0KA10-ZW96","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS motor protection circuit breaker, 3RV1021-0KA10-ZW96, 1.25 A continuous, CLASS 10 trip, 100 kA breaking capacity at 400 V, 3-pole, screw terminals, DIN rail mount.","salesMarkdown":"## Motor protection circuit breaker, 1.25 A, CLASS 10 trip The Siemens SIRIUS 3RV1021-0KA10-ZW96 is a 3-pole motor protection circuit breaker rated for 1.25 A continuous current, with a CLASS 10 trip characteristic and 100 kA breaking capacity across all common industrial voltages (240 V to 690 V AC). This is a standard feature on the SIRIUS 3RV2 line and saves adding a separate phase monitor relay. Panel integration is straightforward: 45 mm wide, 97 mm tall, 96 mm deep. The IP20 front face keeps fingers out of the live terminals. RoHS compliance date is 01.05.2012, which covers the EU RoHS scope. The SIRIUS brand carries CE, UL, CSA, and IEC certifications typical for industrial control gear, though specific approval markings should be verified against the nameplate for the target jurisdiction. ## Wiring & terminals Accepts solid or stranded copper: 2x (1... 2.5 mm²) or 2x (2.5... 6 mm²) per clamp, or AWG 14–10 for the main contacts. Finely stranded wire with ferrule is also supported. No special tools beyond a standard screwdriver needed — field-serviceable without a crimper. Auxiliary switch expansion is possible (product extension auxiliary switch = Yes), so you can add a signal contact for remote status or PLC input without replacing the breaker. ## Operating conditions Shock rated at 25g for 11 ms. Maximum switching frequency is 15 operations per hour under AC-3 duty — fine for a pump or conveyor start/stop cycle, but not for rapid jogging. Power dissipation at rated current: 7.25 W total, 2.4 W per pole in hot operating state.","metaTitle":"Siemens 3RV1021-0KA10-ZW96 SIRIUS Motor Protection CB, 1.25","metaDescription":"Siemens SIRIUS 3RV1021-0KA10-ZW96 motor protection circuit breaker, 1.25 A continuous, CLASS 10 trip, 100 kA breaking capacity at 400 V. Active production. 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","During Storage":"-50 ... +80 °C","lifecycle_stage":"current","During Operation":"-20 ... +60 °C","During Transport":"-50 ... +80 °C","Fastening Method":"screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022","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","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","at AC in hot operating state":"7.25 W","Substance Prohibitance (Date)":"01.05.2012","Continuous Current Rated Value":"1.25 A","at AWG cables for main contacts":"2x (14 ... 10)","protection class IP on the front":"IP20","For Auxiliary And Control Circuit":"screw-type terminals","Product Extension Auxiliary Switch":"Yes","operating frequency at AC-3 maximum":"15 1/h","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","Touch Protection Against Electrical Shock":"finger-safe","number of CO contacts for auxiliary contacts":"0","operational current at AC-3 at 400 V rated value":"1.25 A","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","Product Component Removable Terminal For Auxiliary And Control Circuit":"No","Mechanical Service Life (Switching Cycles) Of The Main Contacts Typical":"100 000","Adjustable Current Response 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=117911&mlfb=3RV1021-0KA10-ZW96","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV1021-0KA10-ZW96/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RV1021-0KA10-ZW96 and how is it quoted?","answer":"It is sourced through independent distribution and quoted to order against an RFQ. Availability and current pricing are confirmed at quote time."},{"question":"Will 3RV1021-0KA10-ZW96 drop into a panel specified for 3RV1011-0HA10?","answer":"Both are 3-pole SIRIUS motor protection breakers on the same 45 mm DIN-rail footprint, but the 3RV1021 series has a higher 100 kA breaking capacity versus the 3RV1011's typical 50 kA at 400 V. Check the SCCR requirement of the panel; if the original spec needed only 50 kA, the 3RV1021 will still work — it just carries excess interrupting capacity. Terminal sizes and wiring space are similar."},{"question":"What is the depth of this component?","answer":"96 mm from the DIN rail mounting surface to the front of the housing."},{"question":"What wire sizes does the terminal accept?","answer":"Screw terminals accept solid or stranded 2x (1... 2.5 mm²) or 2x (2.5... 6 mm²), or AWG 14–10 for the main contacts."},{"question":"Does this breaker detect phase failure?","answer":"Yes, phase failure detection is built in — it will trip if one phase is lost, protecting the motor from single-phasing."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV1021-0KA10-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/3RV1021-0KA10-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}}