{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV1031-4FA10","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV1031-4FA10","canonicalUrl":"https://aoctrl.com/siemens/3RV1031-4FA10","factsUrl":"https://aoctrl.com/api/mcp/products/3RV1031-4FA10","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RV1031-4FA10 motor protection circuit breaker, 40 A continuous, Class 10 trip, 50 kA breaking capacity at 400 V AC, screw terminals, DIN rail mount.","salesMarkdown":"## Motor Protection Breaker, 40 A, Class 10 — SIRIUS 3RV1031-4FA10 It carries a 50 kA short-circuit breaking capacity at 400 V AC and is rated for 18.5 kW motor load at 400 V, so it can handle a direct-on-line motor start on a typical 400 V three-phase supply without needing an upstream fuse for fault levels up to 50 kA. At 55 mm wide, 140 mm tall, and 149 mm deep, it takes up one standard modular slot — no surprises when laying out a row of motor starters. Screw-type box terminals on the main circuit accept 2x 0.75–16 mm² solid or 2x 0.75–25 mm² stranded, and the auxiliary circuit also uses screw terminals — standard stuff for a panel shop, no special tooling needed. Power dissipation runs 29 W total in hot operating state, or 9.7 W per pole — worth checking the thermal budget in a densely packed enclosure, especially if you're stacking several of these next to each other. The IP20 front protection is typical for a DIN-rail device inside a locked panel; it keeps fingers out but isn't rated for washdown environments. RoHS compliance date of 07/01/2006 means it meets the EU substance restrictions for lead, mercury, cadmium, and the usual six — no compliance surprise for a European-built machine.","metaTitle":"Siemens 3RV1031-4FA10 SIRIUS Motor Protection CB, 40 A, Clas","metaDescription":"Siemens 3RV1031-4FA10 SIRIUS motor protection circuit breaker, 40 A continuous, Class 10 trip, 50 kA SCCR at 400 V. Active production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Motor Protection Circuit Breakers (MPCB)"],"specifications":{"Depth":"149 mm","Solid":"2x (0.75 ... 16 mm²)","Width":"55 mm","Height":"140 mm","Stranded":"2x (0.75 ... 25 mm²), 1x (0.75 … 35 mm²)","Backwards":"0 mm","Trip Class":"CLASS 10","At The Side":"0 mm","Rated Value":"690 V","During Storage":"-50 ... +80 °C","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","Shock Resistance":"25g / 11 ms","Mounting Position":"any","Product Brand Name":"SIRIUS","Product Designation":"circuit breaker","at 400 V rated value":"18.5 kW","Design Of The Product":"for motor protection","Ground Fault Detection":"No","Phase Failure Detection":"Yes","For Main Current Circuit":"screw-type terminals with box terminals","at AC at 240 V rated value":"100 kA","at AC at 400 V rated value":"50 kA","at AC at 500 V rated value":"10 kA","at AC at 690 V rated value":"4 kA","at AC-3 rated value maximum":"690 V","at AC in hot operating state":"29 W","Substance Prohibitance (Date)":"07/01/2006","Continuous Current Rated Value":"40 A","protection class IP on the front":"IP20","For Auxiliary And Control Circuit":"screw-type terminals","Product Extension Auxiliary Switch":"Yes","operating frequency at AC-3 maximum":"15 1/h","Surge Voltage Resistance Rated Value":"6 000 V","at AC in hot operating state per pole":"9.7 W","Finely Stranded With Core End Processing":"2x (0.75 ... 16 mm²), 0.75 ... 25 mm²","Number Of Poles For Main Current Circuit":"3","Touch Protection Against Electrical Shock":"finger-safe","number of CO contacts for auxiliary contacts":"0","operational current at AC-3 at 400 V rated value":"40 A","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Design Of The Overcurrent Release And Short-Circuit Release":"thermomagnetic","Arrangement Of Electrical Connectors For Main Current Circuit":"front side","Product Component Removable Terminal For Auxiliary And Control Circuit":"No","Mechanical Service Life (Operating Cycles) Of The Main Contacts Typical":"50 000","Adjustable Current Response Value Current Of The Current-Dependent Overload Release":"28 ... 40 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=143045&mlfb=3RV1031-4FA10","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV1031-4FA10/alternatives.json"},"ai":{"faq":[{"question":"Will 3RV1031-4FA10 drop into a panel specified around 3RV1011-1HA10?","answer":"The 3RV1031-4FA10 is a larger-frame 40 A breaker (55 mm wide) versus the 3RV1011 series which tops out at lower currents in a narrower footprint — it will not physically interchange without rewiring and possibly a wider DIN slot."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV1031-4FA10","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/3RV1031-4FA10 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}}