{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV2021-0JA10","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV2021-0JA10","canonicalUrl":"https://aoctrl.com/siemens/3RV2021-0JA10","factsUrl":"https://aoctrl.com/api/mcp/products/3RV2021-0JA10","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RV2021-0JA10, motor protection circuit breaker, Size S0, Trip Class 10, 100 kA breaking capacity at 400 V AC, screw-type terminals, screw and snap-on mounting onto 35 mm DIN rail.","salesMarkdown":"## Motor protection circuit breaker, Size S0, Class 10 The 100 kA breaking capacity at 400 V AC (and at 240 V, 500 V, 690 V AC) means this breaker can safely interrupt fault currents up to 100 kA without welding contacts or cascading failure upstream — essential for panels with high available fault current near large transformers. Phase failure detection protects motors against single-phasing, which otherwise causes overheating and winding damage — a key requirement for three-phase motor circuits. Size S0 defines the physical footprint and terminal capacity: screw-type terminals for the main circuit accept 2x (1 to 2.5 mm²) or 2x (2.5 to 10 mm²) solid or stranded conductors, with M4 main contact screws. Minimum clearances: 50 mm upwards and downwards, 30 mm to the side; no clearance needed forwards or backwards. Any mounting position is permitted, simplifying panel layout.","metaTitle":"Siemens 3RV2021-0JA10 SIRIUS Motor Protection Circuit Breake","metaDescription":"Siemens 3RV2021-0JA10 SIRIUS motor protection circuit breaker, Size S0, Trip Class 10, 100 kA breaking capacity at 400 V, screw terminals, DIN rail mount. Active production, source","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":"0.2 kW","at 240 V rated value":"100 kA","at 400 V rated value":"100 kA","at 480 V rated value":"1 A","at 500 V rated value":"100 kA","at 600 V rated value":"1 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 575/600 V rated value":"0.5 hp","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":"7.25 W","at AC-3 at 400 V rated value":"1 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":"1 A","Design Of The Overload Release":"thermal","Operating Frequency Rated Value":"50 ... 60 Hz","Operational Current Rated Value":"1 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":"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","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":"13 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":"0.7 ... 1 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$31.75","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=101587&mlfb=3RV2021-0JA10","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV2021-0JA10/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 3RV2021-0JA10 at 400 V?","answer":"100 kA at 400 V AC, and the same 100 kA rating applies at 240 V, 500 V, and 690 V AC."},{"question":"Does 3RV2021-0JA10 have phase failure detection?","answer":"Yes, it includes phase failure detection to protect motors against single-phasing."},{"question":"What are the mounting dimensions and clearances for 3RV2021-0JA10?","answer":"Width 45 mm, height 97 mm, depth 97 mm. Requires 50 mm clearance above and below, 30 mm to the sides, zero forwards or backwards. Snaps onto 35 mm DIN rail per DIN EN 60715."},{"question":"Where can I buy 3RV2021-0JA10?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV2021-0JA10","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/3RV2021-0JA10 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}}