{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV2021-1JA10-0DA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV2021-1JA10-0DA0","canonicalUrl":"https://aoctrl.com/siemens/3RV2021-1JA10-0DA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RV2021-1JA10-0DA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS circuit breaker, 3RV2021-1JA10-0DA0, for system protection, Trip Class 10, 100 kA breaking capacity at 400 V AC, Size S0, screw and snap-on DIN rail mounting.","salesMarkdown":"The Siemens 3RV2021-1JA10-0DA0 is a SIRIUS circuit breaker designed for system protection — meaning it protects downstream wiring and components from short circuits and overloads, not just a single motor. At 690 V AC the breaking capacity drops to 6 kA, so coordination studies at higher voltages need attention. This is a Size S0 frame, which is the compact footprint in the SIRIUS range. The 45 mm width means it occupies one standard 45 mm module slot on the rail. That is high enough for most industrial main distribution panels; you would typically only need a higher SCCR for large transformer-fed switchgear. At 500 V AC the rating is 42 kA, and at 690 V AC it is 6 kA — so if your system runs at 690 V, verify the available fault current is under 6 kA. The motor power rating at 230 V AC is 2.2 kW — that is the maximum three-phase induction motor this breaker can protect in AC-3 duty (starting and stopping under load). The maximum switching rate is 15 operations per hour in AC-3, which is fine for a pump or conveyor that cycles a few times an hour, but not for a high-cycle application like a press or stamping machine. The main circuit terminals are screw-type, accepting 2x 1 to 2.5 mm² or 2x 2.5 to 10 mm² solid or stranded wire. The screwdriver shaft needs a diameter of 5 to 6 mm, with a Pozidriv size 2 tip. The clearance requirements are 50 mm upward and downward, 30 mm to the side, and zero forward or backward — so it fits flush against the back panel.","metaTitle":"Siemens 3RV2021-1JA10-0DA0 SIRIUS Circuit Breaker, Class 10,","metaDescription":"Siemens 3RV2021-1JA10-0DA0 SIRIUS circuit breaker for system protection. Trip Class 10, 100 kA breaking capacity at 400 V AC. Size S0, 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","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":"2.2 kW","at 240 V rated value":"100 kA","at 400 V rated value":"100 kA","at 500 V rated value":"42 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":"42 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":"9.25 W","at AC-3 at 400 V rated value":"10 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":"10 A","Design Of The Overload Release":"thermal","Operating Frequency Rated Value":"50 ... 60 Hz","Operational Current Rated Value":"10 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":"3.1 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":"130 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":"7 ... 10 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=1421692&mlfb=3RV2021-1JA10-0DA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV2021-1JA10-0DA0/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV2021-1JA10-0DA0","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/3RV2021-1JA10-0DA0 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}}