{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV2021-0DA10","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV2021-0DA10","canonicalUrl":"https://aoctrl.com/siemens/3RV2021-0DA10","factsUrl":"https://aoctrl.com/api/mcp/products/3RV2021-0DA10","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS, motor protection circuit breaker, Size S0, Trip Class 10, 100 kA at 400 V AC, screw terminals, phase failure detection, 3RV2021-0DA10.","salesMarkdown":"## Mounting and wiring — what fits where The S0 footprint — 45 mm wide, 97 mm deep, 97 mm tall — is the standard for this current range, so it drops into any panel that already has a Siemens S0 slot. Screw terminals on the main circuit accept 2x (1…2.5 mm²) or 2x (2.5…10 mm²) solid or stranded; the M4 main-contact screws take a Pozidriv size 2 tip or a 5–6 mm diameter screwdriver shaft. Clearance: 50 mm above and below, 30 mm to the sides, zero forward or backward — tight enough for a crowded gland plate, but leave that vertical breathing room for arc-chamber venting. ## What it detects — and what it doesn't Ground fault detection is not included (no GFI module inside), so if your application requires ground-fault protection on the motor feeder, you'll need to add an external ground-fault relay or specify a different variant. Any mounting position is allowed, which simplifies panel layout.","metaTitle":"Siemens 3RV2021-0DA10 SIRIUS Motor Protection CB, 100 kA at","metaDescription":"Siemens 3RV2021-0DA10 SIRIUS motor protection circuit breaker, Size S0, Trip Class 10, 100 kA breaking capacity at 400 V AC. Phase failure detection, screw terminals. Current lifec","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":"3RV2021-0DA10","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 0.22...0.32 A Short-circuit release 4.2 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 standard mounting 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":"0.32 A","at 500 V rated value":"100 kA","at 600 V rated value":"0.32 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":"0.32 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":"0.32 A","Design Of The Overload Release":"thermal","Operating Frequency Rated Value":"50 ... 60 Hz","Operational Current Rated Value":"0.32 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 (Switching 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":"4.2 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":"0.22 ... 0.32 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=1135037&mlfb=3RV2021-0DA10"},"ai":{"faq":[{"question":"What is the breaking capacity of 3RV2021-0DA10 at 400 V?","answer":"100 kA at 400 V AC — that's the interrupting rating for the main circuit at that voltage."},{"question":"Will 3RV2021-0DA10 drop into a panel specified around 3RV2011-0AA10 without rewiring?","answer":"Both are Size S0 breakers with the same 45 mm width and DIN-rail mounting, so the mechanical footprint matches. However, the 3RV2021-0DA10 carries a 100 kA breaking capacity at 400 V versus the 3RV2011 series' lower ratings — verify the SCCR coordination study before swapping, as the upstream protection may differ."},{"question":"How do I get current pricing and availability for 3RV2021-0DA10?","answer":"Submit an RFQ with the order code; pricing and availability are confirmed at quote time through independent distribution channels."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV2021-0DA10","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/3RV2021-0DA10 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}}