{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV2021-1GA10-0DA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV2021-1GA10-0DA0","canonicalUrl":"https://aoctrl.com/siemens/3RV2021-1GA10-0DA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RV2021-1GA10-0DA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS circuit breaker, 3RV2021-1GA10-0DA0, Size S0, Trip Class 10, for system protection, 100 kA breaking capacity at 400 V AC, screw and snap-on DIN rail mounting.","salesMarkdown":"The Siemens SIRIUS 3RV2021-1GA10-0DA0 is a circuit breaker designed for system protection — meaning it guards the branch circuit against short-circuits and overloads, not just the motor. It's part of the SIRIUS family, Size S0, and carries a Trip Class 10, so it trips within 10 seconds at 7.2× the thermal setting, matching standard motor starting curves. ## Breaking capacity — the number that decides selectivity At 400 V AC the unit interrupts 100 kA. At 690 V AC that drops to 4 kA — a steep derate that matters if your panel feeds a 690 V bus. The 100 kA figure holds at 240 V and 500 V as well, so for standard 400 V distribution this breaker coordinates cleanly with upstream 100 kA-rated MCCBs without a fuse backup. Any mounting position is allowed. The lifecycle stage is current — this is an active, in-production part. No end-of-life notice or successor has been issued.","metaTitle":"Siemens 3RV2021-1GA10-0DA0 SIRIUS Circuit Breaker, Size S0,","metaDescription":"Siemens SIRIUS 3RV2021-1GA10-0DA0 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. Sourced","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":"1.5 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":"6.3 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":"6.3 A","Design Of The Overload Release":"thermal","Operating Frequency Rated Value":"50 ... 60 Hz","Operational Current Rated Value":"6.3 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":"82 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":"4.5 ... 6.3 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=1421690&mlfb=3RV2021-1GA10-0DA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV2021-1GA10-0DA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RV2021-1GA10-0DA0?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What is the breaking capacity of 3RV2021-1GA10-0DA0 at 400 V?","answer":"100 kA at 400 V AC. At 690 V AC it derates to 4 kA."},{"question":"What is the Trip Class of 3RV2021-1GA10-0DA0?","answer":"Trip Class 10 — trips within 10 seconds at 7.2× the thermal setting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV2021-1GA10-0DA0","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/3RV2021-1GA10-0DA0 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}}