{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV5331-4EC10","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV5331-4EC10","canonicalUrl":"https://aoctrl.com/siemens/3RV5331-4EC10","factsUrl":"https://aoctrl.com/api/mcp/products/3RV5331-4EC10","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS, circuit breaker for starter combinations, size S2, 3-pole, 32 A AC-3 at 400 V, 690 V rated insulation, screw terminals, 35 mm DIN-rail mount, order code 3RV5331-4EC10.","salesMarkdown":"## What the 32 A AC-3 rating means for your motor circuit Its headline rating is 32 A operational current at AC-3 duty (400 V), which means it directly protects a motor drawing up to that current under the heaviest switching category — starting, running, and stopping induction motors with inrush. That 416 A threshold is fixed — not adjustable — so verify your motor's locked-rotor current stays above it to avoid nuisance trips on startup. The S2 frame takes 55 mm width on the rail — three of these side-by-side fit in a standard 200 mm wide enclosure without crowding. Depth is 149 mm, so plan for at least 160 mm clear behind the panel door to allow wiring and cover clearance. The 15 W typical power loss at full load means no forced ventilation is needed in a standard IP54 enclosure, but cluster several breakers and the internal temperature rise needs checking against the -20 to +60 °C operating range. ## Termination and wiring constraints Screw-type box terminals on top and bottom accept 2 x (0.75 to 25 mm²) solid or stranded, or 1 x (0.75 to 35 mm²). For finely stranded with ferrules, capacity drops to 2 x (0.75 to 16 mm²) or 1 x (0.75 to 25 mm²). AWG equivalents: 2 x (18 to 2) or 1 x (18 to 2). Tightening torque: 3 to 4.5 N·m. That's a standard slot/Pozidriv #2 range — a torque screwdriver set to 4 N·m is the safe middle point. The terminals are rated for the full 32 A continuous; no derating needed for the termination itself, but the 15 W power loss is dissipated through the terminals and housing, so keep adjacent wiring bundles clear of the breaker body. Operates in 10 to 95 % relative humidity and survives transport from -50 to +80 °C. Shock resistance: 25 g for 11 ms per IEC 60068-2-27 — rugged enough for machine-mounted panels near presses or conveyors. Installation altitude limit is 2 000 m above sea level; above that, derate the current per IEC 60947-2. The part carries a substance prohibition date of 07/01/2006, which aligns with the original EU RoHS compliance deadline — no lead, cadmium, or mercury above threshold. For UL/CSA listings, the SIRIUS family is typically UL 508 listed; confirm the specific file number at quote time if your panel requires a marked UL listing.","metaTitle":"Siemens 3RV5331-4EC10 SIRIUS Circuit Breaker, 32 A AC-3, 690","metaDescription":"Siemens SIRIUS 3RV5331-4EC10 circuit breaker for starter combinations. 32 A AC-3 at 400 V, 690 V insulation, 416 A magnetic short-circuit trip. DIN-rail mount. Active production. S","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":"3RV5331-4EC10","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 32 A rated current 32 A, for starter combination, short-circuit release 416 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":"15 W","Substance Prohibitance (Date)":"07/01/2006","Operating Frequency Rated Value":"50 ... 60 Hz","Operational Current Rated Value":"32 A","Design Of The Short-Circuit Trip":"magnetic","for AWG cables for main contacts":"2x (18 ... 2), 1x (18 ... 2)","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":"32 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":"416 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/41bcfdf33d7139a3aac9c46a06f2cec2.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=621575&mlfb=3RV5331-4EC10"},"ai":{"faq":[{"question":"What is the short-circuit trip threshold on this breaker?","answer":"The magnetic instantaneous short-circuit trip responds at 416 A. That is a fixed setting — not adjustable — and it is the value that coordinates with the downstream contactor's withstand rating in a starter combination."},{"question":"Can I buy 3RV5331-4EC10 and what is the lead time?","answer":"We source this part to order against an RFQ. Availability and current pricing are confirmed at quote time — submit your quantity and target delivery date, and we will source it through our independent distribution network."},{"question":"Will 3RV5331-4EC10 drop into a panel specified around 3RV6021-4DA10?","answer":"No — the 3RV5331-4EC10 is a size S2 frame with different terminal layout and trip characteristics than the S0-frame 3RV6021-4DA10. It is not a mechanical or electrical drop-in without rewiring and re-coordinating the motor branch circuit."},{"question":"What compliance documentation is available for this part?","answer":"The part carries a substance prohibition date of 07/01/2006, consistent with original EU RoHS compliance. The SIRIUS family typically holds UL 508, CSA C22.2, and IEC 60947-2 approvals; confirm the specific certificate numbers at quote time for your jurisdiction."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV5331-4EC10","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/3RV5331-4EC10 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}}