{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV5431-4AA10","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV5431-4AA10","canonicalUrl":"https://aoctrl.com/siemens/3RV5431-4AA10","factsUrl":"https://aoctrl.com/api/mcp/products/3RV5431-4AA10","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS circuit breaker, 3RV5431-4AA10, 3-pole, 16 A rated operational current, Class 10, for transformer protection, 690 V, 50/60 Hz, S2 frame, screw terminals, DIN rail mount.","salesMarkdown":"## Transformer-protection circuit breaker, 16 A, SIRIUS S2 The Siemens 3RV5431-4AA10 is a 3-pole SIRIUS circuit breaker purpose-designed for transformer protection, with a rated operational current of 16 A and a rated insulation voltage of 690 V. It carries a Class 10 trip characteristic, meaning the thermal overload release responds within 10 seconds at 7.2× the current setting — fast enough to protect a transformer winding from sustained overcurrent without nuisance-tripping on inrush. The magnetic short-circuit trip handles the high fault currents a transformer primary can see on a phase-to-phase bolted fault. Rated at 16 A in AC-3 duty at 400 V, this breaker switches motor loads up to that current, but its primary job is transformer primary-side protection where the inrush profile differs from a motor start. The S2 frame size keeps the unit compact enough for dense panel layouts while still accommodating screw-type box terminals that accept up to 35 mm² solid or 25 mm² finely stranded wire. The 55 mm width and 149 mm depth fit standard S2 panel cutouts; clearance requirements are 50 mm upward, 50 mm downward, 140 mm forward, and 30 mm at the sides. Connections are top and bottom for the main circuit, with screw terminals torqued to 3–4.5 N·m. Operating temperature range is –20 to +60 °C with 10–95 % relative humidity, so it handles unconditioned industrial enclosures. Installation altitude is limited to 2 000 m above sea level without derating. ## Electrical and environmental ratings Rated operational voltage 690 V AC at 50/60 Hz. Shock resistance per IEC 60068-2-27 is 25 g for 11 ms. Typical power loss is 12 W total. The breaker provides both thermal overload protection (Class 10) and magnetic short-circuit protection in one unit.","metaTitle":"Siemens 3RV5431-4AA10 SIRIUS Circuit Breaker, 16 A, Transfor","metaDescription":"Siemens 3RV5431-4AA10 SIRIUS circuit breaker, 16 A rated current, Class 10 trip, for transformer protection. 3-pole, 690 V, screw/snap-on DIN rail mount. Sourced to order against R","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","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","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":"12 W","Substance Prohibitance (Date)":"07/01/2006","Design Of The Overload Release":"thermal","Operating Frequency Rated Value":"50 ... 60 Hz","Operational Current Rated Value":"16 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":"16 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":"325 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":"11 ... 16 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=621607&mlfb=3RV5431-4AA10","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV5431-4AA10/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the 3RV5431-4AA10 and get a price?","answer":"The 3RV5431-4AA10 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 quote."},{"question":"What is the depth of the 3RV5431-4AA10?","answer":"The depth is 149 mm. Combined with a width of 55 mm and height of 140 mm, it fits the standard S2 frame footprint."},{"question":"What compliance documentation does Siemens provide for the 3RV5431-4AA10?","answer":"The part carries a substance prohibition date of July 1, 2006, indicating RoHS compliance. Standard Siemens documentation includes the declaration of conformity and CE marking; specific UL/CSA certifications should be verified against the nameplate marking on the unit."},{"question":"Will the 3RV5431-4AA10 drop into a panel specified around the 3RV6021-4DA10?","answer":"Both are SIRIUS S2 frame breakers with the same 55 mm width and DIN rail mounting, so the panel cutout and rail position are compatible. However, the 3RV5431-4AA10 is specifically designed for transformer protection (different trip curve tuning) versus the general motor-protection focus of the 3RV6021-4DA10. Verify the trip class and current rating match your load before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV5431-4AA10","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/3RV5431-4AA10 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}