{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV2021-1GA10","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV2021-1GA10","canonicalUrl":"https://aoctrl.com/siemens/3RV2021-1GA10","factsUrl":"https://aoctrl.com/api/mcp/products/3RV2021-1GA10","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RV2021-1GA10 motor protection circuit breaker, 6.3 A, 100 kA breaking capacity at 400 V, Class 10 trip, screw terminals, DIN rail mount.","salesMarkdown":"Rated at 6.3 A, it's sized for smaller motor loads up to 3 hp at 460/480 V or 5 hp at 575/600 V. It carries a 100 kA breaking capacity at both 240 V and 400 V AC, which means it can safely interrupt a fault current up to 100,000 amps at those voltages without welding its contacts or cascading upstream. That's a serious interrupting rating for a 45 mm wide device — useful when you're feeding a motor from a high-capacity distribution board. The 45 mm width means it takes up one standard modular space — easy to drop into an existing panel layout. That 50 mm top/bottom gap is for heat dissipation and wiring access — don't skimp on it if the breaker is running near its rated current in a warm cabinet. Main circuit terminals accept screw-type connections: 2× (1 to 2.5 mm²) or 2× (2.5 to 10 mm²) solid or stranded. M4 screw size on the main contacts. That covers most motor feeder cables up to 6.3 A. For BOM freeze or PCN tracking, this is a low-risk line item. The 6.3 A rating and 100 kA breaking capacity are common values, so if a replacement were ever needed, the parametric search would land on a direct sibling within the same series.","metaTitle":"Siemens 3RV2021-1GA10 SIRIUS Motor Protection Circuit Breake","metaDescription":"Siemens SIRIUS 3RV2021-1GA10 motor protection circuit breaker, 6.3 A rated current, 100 kA breaking capacity at 400 V, Class 10 trip, DIN rail mount. Currently in production.","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":"3RV2021-1GA10","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 4.5...6.3 A N-release 82 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 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":"0.5 hp","at 240 V rated value":"100 kA","at 400 V rated value":"100 kA","at 480 V rated value":"6.3 A","at 500 V rated value":"100 kA","at 600 V rated value":"6.3 A","at 690 V rated value":"4 kA","Design Of The Product":"For motor protection","Ground Fault Detection":"No","Phase Failure Detection":"Yes","For Main Current Circuit":"screw-type terminals","at 110/120 V rated value":"0.25 hp","at 200/208 V rated value":"1 hp","at 220/230 V rated value":"1.5 hp","at 460/480 V rated value":"3 hp","at 575/600 V rated value":"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":"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","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":"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":"$83.00","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=400917&mlfb=3RV2021-1GA10"},"ai":{"faq":[{"question":"What are the key ratings for this motor protection breaker?","answer":"Rated current 6.3 A, breaking capacity 100 kA at 240 V and 400 V AC, Class 10 trip curve. Phase failure detection is included; ground fault detection is not."},{"question":"What are the mounting dimensions and clearances?","answer":"Width 45 mm, depth 97 mm, height 97 mm. Requires 50 mm clearance above and below, 30 mm to the sides. Mounts on 35 mm DIN rail per DIN EN 60715 in any orientation."},{"question":"What wire sizes does the terminal accept?","answer":"Screw terminals accept 2× (1 to 2.5 mm²) or 2× (2.5 to 10 mm²) solid or stranded conductors. Main contact screw size is M4."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV2021-1GA10","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 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}}