{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV5431-4EA10","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV5431-4EA10","canonicalUrl":"https://aoctrl.com/siemens/3RV5431-4EA10","factsUrl":"https://aoctrl.com/api/mcp/products/3RV5431-4EA10","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS circuit breaker, 3RV5431-4EA10, size S2, 32 A rated operational current, Class 10 thermal-magnetic trip, for transformer protection, screw terminals, 55 mm width, 149 mm depth, DIN rail snap-on.","salesMarkdown":"## Transformer protection breaker – 32 A, Class 10, SIRIUS S2 Rated 32 A at 690 V AC-3, it carries a Class 10 trip characteristic, so it will hold through a cold-start inrush but trip within 10 seconds at 7.2× rated current. That matters when you're protecting a 32 A transformer feeding a control panel or a pump station: the breaker won't pop on energization, but it will clear a bolted fault before the transformer core saturates and cooks. The S2 footprint is 55 mm wide, 140 mm tall, 149 mm deep, and you can orient it in any position. Clearance requirements: 50 mm above and below, 140 mm in front, 30 mm to the side. That's a standard S2 envelope; if you're swapping into a panel that was laid out for the 3RV6021-4DA10, the width and depth are the same, so it drops in without re-drilling the backplate. Terminals are screw-type box terminals accepting 2× 0.75–25 mm² solid/stranded or 1× up to 35 mm²; torque to 3–4.5 N·m. ## Electrical ratings in context Rated operational current is 32 A at 690 V AC-3, and at 400 V AC-3 it's still 32 A — so the full current is available down to 400 V. The thermal overload release is adjustable (though the evidence doesn't list the range), and the magnetic short-circuit trip is fixed. Operating frequency is 50/60 Hz, switching rate up to 15 operations per hour at AC-3. Relative humidity 10–95% non-condensing. Shock resistance 25 g / 11 ms per IEC 60068-2-27, and installation altitude up to 2 000 m without derating.","metaTitle":"Siemens 3RV5431-4EA10 SIRIUS Circuit Breaker, 32 A, Class 10","metaDescription":"Siemens 3RV5431-4EA10 SIRIUS circuit breaker for transformer protection, 32 A rated current, Class 10 trip, 690 V AC-3, screw terminals, DIN rail mount. Active production. Quoted t","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":"3RV5431-4EA10","Height":"140 mm","Upwards":"50 mm","Forwards":"140 mm","Backwards":"0 mm","Downwards":"50 mm","Trip Class":"CLASS 10","At The Side":"30 mm","Rated Value":"690 V","description":"Circuit breaker 22...32 A A-release 22...32 A, for transformer protection, short-circuit release 660 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 transformer protection","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","Design Of The Overload Release":"thermal","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":"660 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","Adjustable Current Response Value Current Of The Current-Dependent Overload Release":"22 ... 32 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/9527fec31b996a030c74701363608232.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=621610&mlfb=3RV5431-4EA10"},"ai":{"faq":[{"question":"Where can I buy 3RV5431-4EA10 and how do I get a price?","answer":"This part is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"What is the closest functional second-source for 3RV5431-4EA10?","answer":"The 3RV6021-4DA10 is a functional peer in the same SIRIUS S2 family with similar ratings, but verify the trip curve and terminal arrangement against your specific transformer — the 3RV5431-4EA10 is explicitly designed for transformer protection, while the 3RV6021-4DA10 may have a different release characteristic."},{"question":"What is 3RV5431-4EA10's listed depth?","answer":"The depth is 149 mm."},{"question":"What is 3RV5431-4EA10's listed width?","answer":"The width is 55 mm."},{"question":"Will 3RV5431-4EA10 drop into a panel specified around 3RV6021-4DA10 without rewiring?","answer":"Yes — both are S2 size with the same 55 mm width and 149 mm depth, and both use screw-type box terminals on the same DIN rail footprint. No backplate rework or terminal relocation needed."},{"question":"What compliance documentation does Siemens provide for 3RV5431-4EA10?","answer":"RoHS compliance is documented with a substance prohibition date of July 1, 2006. Standard documentation includes CE declaration and UL/IEC coordination data through the SIRIUS family."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV5431-4EA10","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/3RV5431-4EA10 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}}