{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV2021-0CA10","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV2021-0CA10","canonicalUrl":"https://aoctrl.com/siemens/3RV2021-0CA10","factsUrl":"https://aoctrl.com/api/mcp/products/3RV2021-0CA10","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS, motor protection circuit breaker, 3RV2021-0CA10, Size S0, Trip Class 10, 100 kA SCCR at 400 V AC, screw-type terminals, screw and snap-on mounting on 35 mm DIN rail.","salesMarkdown":"## Motor protection circuit breaker for 100 kA fault levels Trip Class 10 ensures it trips fast enough to protect standard 4-pole motors during locked-rotor starts, clearing before the rotor insulation overheats. Screw-type terminals on the main circuit accept 2x (1 to 2.5 mm²) or 2x (2.5 to 10 mm²) solid or stranded conductors, sized for standard motor branch circuits. Clearance: 50 mm above and below, 30 mm to the sides, zero forward or backward. ## Protection features and operating limits No ground fault detection on this variant. Rated operational voltage range is 20 to 690 V. Maximum switching rate at AC-3 duty is 15 operations per hour. The 3RV2021-0CA10 carries a current lifecycle stage per Siemens. No official successor has been published, so this remains the active order code for new designs requiring Size S0, Trip Class 10 motor protection with 100 kA SCCR.","metaTitle":"Siemens 3RV2021-0CA10 SIRIUS Motor Protection Circuit Breake","metaDescription":"Siemens SIRIUS 3RV2021-0CA10 motor protection circuit breaker, Size S0, Trip Class 10, 100 kA SCCR at 400 V, screw terminals, DIN rail mount. Sourced to order.","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","title":"3RV2021-0CA10","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","description":"Circuit breaker size S0 for motor protection, Class 10 A-release 0.18...0.25 A Short-circuit release 3.3 A Screw terminal Standard switching capacity","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 kW","at 240 V rated value":"100 kA","at 400 V rated value":"100 kA","at 480 V rated value":"0.25 A","at 500 V rated value":"100 kA","at 600 V rated value":"0.25 A","at 690 V rated value":"100 kA","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","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":"5.5 W","at AC-3 at 400 V rated value":"0.25 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":"0.25 A","Design Of The Overload Release":"thermal","Operating Frequency Rated Value":"50 ... 60 Hz","Operational Current Rated Value":"0.25 A","at AWG cables for main contacts":"2x (16 ... 12), 2x (14 ... 8)","Design Of The Short-Circuit Trip":"magnetic","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":"1.8 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":"3.3 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":"0.18 ... 0.25 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"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=1135036&mlfb=3RV2021-0CA10"},"ai":{"faq":[{"question":"What is the difference between 3RV2021-0CA10 and 3RV2011-0AA10?","answer":"The 3RV2021-0CA10 is a Size S0 frame rated for 100 kA SCCR at 400 V, while the 3RV2011-0AA10 is a smaller Size S00 frame with lower interrupting capacity. The 3RV2021-0CA10 will not drop into a panel wired for S00 without rewiring, as the terminal spacing and DIN rail footprint differ."},{"question":"Where can I buy 3RV2021-0CA10?","answer":"The part is sourced and quoted to order against an RFQ through independent distribution channels. Submit an RFQ for current availability and pricing."},{"question":"What does Trip Class 10 mean for motor protection?","answer":"Trip Class 10 means the breaker will trip within 10 seconds at 600% of the thermal setting, matching the heating curve of standard 4-pole induction motors during locked-rotor starts."},{"question":"What compliance documentation is available for 3RV2021-0CA10?","answer":"As a Siemens SIRIUS component, it carries CE marking for the European market and is designed to meet IEC/EN 60947-2 and 60947-4-1 standards. RoHS and REACH declarations are available from Siemens on request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV2021-0CA10","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/3RV2021-0CA10 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}