{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV5331-4HC10","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV5331-4HC10","canonicalUrl":"https://aoctrl.com/siemens/3RV5331-4HC10","factsUrl":"https://aoctrl.com/api/mcp/products/3RV5331-4HC10","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS circuit breaker, 3RV5331-4HC10, size S2, 3-pole, 50 A rated operational current at AC-3 400 V, 690 V rated insulation voltage, screw terminals, for starter combinations.","salesMarkdown":"## What the 50 A AC-3 rating means for your motor branch The 3RV5331-4HC10 is a SIRIUS circuit breaker sized for starter combinations — the branch protection and disconnect for a motor control center or individual starter bucket. Its headline number is 50 A operational current at AC-3 duty, 400 V. AC-3 is the standard motor-switching category: starting, stopping, and running a squirrel-cage induction motor under full load. So this breaker carries a motor branch up to 50 A steady-state, which for a 400 V three-phase supply translates to roughly 30 kW of connected motor load. The instantaneous short-circuit trip is fixed at 650 A — that's the magnetic element that clears a bolted fault before the overload relay sees it. That 650 A threshold is set at the factory; it's not field-adjustable, so verify your motor's locked-rotor current stays below it to avoid nuisance trips on start. The S2 frame measures 55 mm wide, 140 mm high, 149 mm deep. Clearance requirements: 50 mm above and below, 30 mm to the sides, 140 mm forward — no clearance needed behind the DIN rail (–). That forward clearance is the space for the box-type screw terminals, which accept 2 x 0.75–25 mm² solid or stranded, or 1 x 0.75–35 mm². Terminal torque spec is 3–4.5 N·m. Mounting position is any, which helps in tight enclosures where the rail is vertical or horizontal. Operating ambient -20 to +60 °C; transport/storage -50 to +80 °C. Relative humidity 10–95% during operation. Shock resistance 25 g / 11 ms per IEC 60068-2-27. Installation altitude up to 2000 m above sea level. Rated impulse withstand voltage 6 kV. The part carries a substance prohibitance date of 07/01/2006, consistent with RoHS compliance.","metaTitle":"Siemens 3RV5331-4HC10 SIRIUS Circuit Breaker, 50 A, 690 V, S","metaDescription":"Siemens 3RV5331-4HC10 SIRIUS circuit breaker for starter combinations. 50 A rated at AC-3 400 V, 690 V insulation, 650 A instantaneous trip. S2 size, DIN rail mount. Current lifecy","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Motor Protection Circuit Breakers (MPCB)"],"specifications":{"Depth":"149 mm","Width":"55 mm","title":"3RV5331-4HC10","Height":"140 mm","Upwards":"50 mm","Forwards":"140 mm","Backwards":"0 mm","Downwards":"50 mm","At The Side":"30 mm","Rated Value":"690 V","description":"Circuit breaker 50 A rated current 50 A, for starter combination, short-circuit release 650 A, screw terminal standard switching capacity SIRIUS","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 50022","Mounting Position":"any","Solid Or Stranded":"2x (0.75 ... 25 mm²), 1x (0.75 ... 35 mm²)","Product Brand Name":"SIRIUS","Product Designation":"Circuit breaker","Design Of The Product":"for starter combinations","For Main Current Circuit":"screw-type terminals with box terminals","Size Of The Circuit-Breaker":"S2","at AC-3 rated value maximum":"690 V","power loss [W] total typical":"20 W","Substance Prohibitance (Date)":"07/01/2006","Operating Frequency Rated Value":"50 ... 60 Hz","Operational Current Rated Value":"50 A","at AWG cables for main contacts":"2x (18 ... 2), 1x (18 ... 2)","Design Of The Short-Circuit Trip":"magnetic","Relative Humidity During Operation":"10 ... 95 %","operating frequency at AC-3 maximum":"15 1/h","Surge Voltage Resistance Rated Value":"6 kV","Finely Stranded With Core End Processing":"2x (0.75 ... 16 mm²), 1x (0.75 ... 25 mm²)","Number Of Poles For Main Current Circuit":"3","Product Function Short Circuit Protection":"Yes","For Main Contacts With Screw-Type Terminals":"3 ... 4.5 N·m","shock resistance according to IEC 60068-2-27":"25g / 11 ms","operational current at AC-3 at 400 V rated value":"50 A","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":"650 A","insulation voltage with degree of pollution 3 at AC rated value":"690 V","maximum short-circuit current breaking capacity (Icu) at AC at 400 V rated value":"50 kA","operating short-circuit current breaking capacity (Ics) at AC at 400 V rated value":"25 kA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/694b0422e8219745eb99b8eb3673fe7f.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=621578&mlfb=3RV5331-4HC10"},"ai":{"faq":[{"question":"Where can I buy 3RV5331-4HC10 and get a price?","answer":"This part is sourced to order against an RFQ through independent distribution. Submit a request for quote (RFQ) to confirm current availability and pricing at the time of order."},{"question":"What is the closest functional second-source for 3RV5331-4HC10?","answer":"The 3RV6021-4DA10 is a peer in the SIRIUS family, but it's a different frame size and rating. The 3RV5331-4HC10 is the S2 frame at 50 A AC-3; the 3RV6021-4DA10 is a different variant. Verify the specific ratings and dimensions before substituting — the panel clearance and terminal capacity differ between frame sizes."},{"question":"Will 3RV5331-4HC10 drop into a panel specified for 3RV6021-4DA10?","answer":"Not without checking the panel layout. Both mount on 35 mm DIN rail, but the S2 frame (3RV5331-4HC10) has different dimensions and terminal capacity than the peer variant. Verify the available DIN rail space, clearance zones, and wire sizes before assuming a direct swap."},{"question":"What compliance documentation does Siemens provide for 3RV5331-4HC10?","answer":"The part carries a substance prohibitance date of 07/01/2006, consistent with RoHS compliance. The SIRIUS series typically supports CE, UL, CSA, and IEC certifications — confirm the specific declarations with the order documentation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV5331-4HC10","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/3RV5331-4HC10 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}}