{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV2021-1EA10-0DA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV2021-1EA10-0DA0","canonicalUrl":"https://aoctrl.com/siemens/3RV2021-1EA10-0DA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RV2021-1EA10-0DA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RV2021-1EA10-0DA0 circuit breaker for system protection, Size S0, Trip Class 10, 100 kA breaking capacity at 400 V AC, screw and snap-on DIN rail mounting.","salesMarkdown":"## SIRIUS circuit breaker for system protection The Siemens SIRIUS 3RV2021-1EA10-0DA0 is a circuit breaker designed for system protection in motor branch circuits and distribution panels. The Size S0 frame takes up 45 mm width on the rail, with 97 mm depth and height. For a panel OEM, that 45 mm per pole is the critical fill factor — three of these on a rail eat 135 mm before you add any auxiliary contact block or shunt trip. ## Breaking capacity and voltage limits The 100 kA rating at 240 V and 400 V AC holds across the 500 V level as well, then drops sharply to 4 kA at 690 V. The AC-3e maximum switching rate is 15 operations per hour — this is not a high-cycling application breaker; it is sized for motor starts and occasional fault interruption, not for frequent load switching. Rated operational voltage spans 20 to 690 V, covering most low-voltage industrial systems. The 0.8 kW motor rating at 230 V gives a rough sizing anchor for smaller loads; for 400 V systems, match the motor FLA to the breaker's thermal setting range (not listed here, but standard for the SIRIUS 3RV2 family). Main circuit terminals are screw-type, accepting 2x 1 to 2.5 mm² or 2x 2.5 to 10 mm² solid or stranded copper. The screwdriver shaft diameter is 5 to 6 mm, tip Pozidriv size 2. Main contact terminal thread is M4. Clearance: 50 mm upwards and downwards, 30 mm at the sides, zero forwards and backwards (–). That zero forwards/backwards clearance means the breaker can be butted directly against the back panel and adjacent devices on the same DIN rail — no breathing gap needed.","metaTitle":"Siemens 3RV2021-1EA10-0DA0 SIRIUS Circuit Breaker, 100 kA at","metaDescription":"Siemens SIRIUS 3RV2021-1EA10-0DA0 circuit breaker for system protection. Trip Class 10, 100 kA breaking capacity at 400 V AC, Size S0, screw and snap-on DIN rail mounting. Current","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":"0.8 kW","at 240 V rated value":"100 kA","at 400 V rated value":"100 kA","at 500 V rated value":"100 kA","at 690 V rated value":"4 kA","Design Of The Product":"for system protection","Ground Fault Detection":"No","Phase Failure Detection":"No","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":"6 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":"4 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":"4 A","Design Of The Overload Release":"thermal","Operating Frequency Rated Value":"50 ... 60 Hz","Operational Current Rated Value":"4 A","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":"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 Sinus","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":"52 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":"2.8 ... 4 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$45.72","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=1448465&mlfb=3RV2021-1EA10-0DA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV2021-1EA10-0DA0/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of the 3RV2021-1EA10-0DA0 at 400 V?","answer":"100 kA at 400 V AC. At 690 V AC the rating drops to 4 kA, so verify the available fault current at your system voltage before specifying."},{"question":"How do I get pricing and availability for the 3RV2021-1EA10-0DA0?","answer":"Submit an RFQ through the storefront. Availability and current pricing are confirmed at quote time through independent distribution channels. The part is sourced to order."},{"question":"Will the 3RV2021-1EA10-0DA0 drop into a panel wired for a 3RV1011-0GA10?","answer":"Both are Size S0 Siemens circuit breakers on the same 45 mm DIN-rail footprint, so the mechanical fit is identical. Verify the terminal arrangement and wiring diagram match — the 3RV2021-1EA10-0DA0 uses screw-type terminals and accepts the same conductor sizes as the 3RV1011 series. Functional ratings (Trip Class, breaking capacity) differ, so confirm the electrical specs cover your load."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV2021-1EA10-0DA0","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/3RV2021-1EA10-0DA0 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}}