{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1317-2BF40","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1317-2BF40","canonicalUrl":"https://aoctrl.com/siemens/3RT1317-2BF40","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1317-2BF40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT1317-2BF40 power contactor, size S00, 110 VDC coil, 4 NO main contacts, spring-loaded terminals, 5.5 kW at AC-2, 400 V.","salesMarkdown":"It's rated for 5.5 kW motor switching at AC-2 duty, 400 V — that's the operating curve for slip-ring motors or moderate inductive loads, not just resistive heating. The coil pulls 3.3 W on both pick-up and hold, so the DC supply doesn't need a separate economy resistor. Drop-out is clean; no residual magnetism issues at this power level. AC-2 covers starting and plugging of slip-ring motors; if your load is a standard squirrel-cage motor, you'd typically use the AC-3 rating instead, but this contactor's AC-3 data isn't listed here. The AC-12 maximum operating current is 10 A — that's the resistive/control circuit limit, not the motor contact rating. Auxiliary contact ratings span the common control voltages: 10 A at 24 V, 6 A at 230 V, 3 A at 400 V, and 1 A at 110 V. For short-circuit protection, Type 1 coordination calls for a 35 A gL/gG fuse; Type 2 requires 20 A. That's the difference between allowing the contactor to be damaged vs. protecting it for reuse after a fault — specify Type 2 if downtime for replacement matters. IP20 on the front and terminals means finger-safe but not washdown-rated. Electrical life will be lower and depends on the switching load and frequency. Physical dimensions are 45 mm wide, 60 mm high, 72 mm deep — fits the standard S00 footprint. The spring-loaded terminals accept 2x (0.25 to 2.5 mm²) solid or stranded, or 2x (0.25 to 1.5 mm²) with ferrules. AWG equivalent is 2x (24 to 14).","metaTitle":"Siemens 3RT1317-2BF40 SIRIUS Power Contactor, 110 VDC Coil,","metaDescription":"Siemens SIRIUS 3RT1317-2BF40 power contactor, size S00, 110 VDC coil, 4 NO main contacts, spring-loaded terminals. Rated 5.5 kW at AC-2, 400 V. Active production, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"72 mm","Solid":"2x (0.25 ... 2.5 mm²)","Width":"45 mm","Height":"60 mm","Maximum":"2 000 m","At The Side":"6 mm","Rated Value":"110 V","On The Front":"IP20","Initial Value":"0.85","Mounting type":"screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022","Of The Terminal":"IP20","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Full-scale value":"1.1","Size of contactor":"S00","Product brand name":"SIRIUS","Degree of pollution":"3","Product designation":"power contactor","at 24 V rated value":"10 A","at 60 V rated value":"2 A","Of Contactor Typical":"30 000 000","at 110 V rated value":"1 A","at 220 V rated value":"0.3 A","at 230 V rated value":"6 A","at 400 V rated value":"3 A","Instantaneous Contact":"0","Side-by-side mounting":"Yes","For Main Current Circuit":"spring-loaded terminals","Single Or Multi-Stranded":"2x (0,25 ... 2,5 mm²)","at AC-2 at 400 V rated value":"5.5 kW","Closing power of magnet coil at DC":"3.3 W","Holding power of magnet coil at DC":"3.3 W","Operating current at AC-12 maximum":"10 A","With Type Of Assignment 2 Required":"fuse gL/gG: 20 A","at AWG conductors for main contacts":"2x (24 ... 14)","With Type Of Coordination 1 Required":"fuse gL/gG: 35 A","Reference code acc. to DIN EN 81346-2":"Q","Number of NC contacts for main contacts":"0","Number of NO contacts for main contacts":"4","Finely Stranded With Core End Processing":"2x (0.25 ... 1.5 mm²)","Number of poles for main current circuit":"4","at AWG conductors for auxiliary contacts":"2x (24 ... 14)","Contact reliability of auxiliary contacts":"1 faulty switching per 100 million (17 V, 1 mA)","For Auxiliary And Control Current Circuit":"spring-loaded terminals","at ambient temperature 40 °C rated value":"22 A","Finely Stranded Without Core End Processing":"2x (0.25 ... 2.5 mm²)","Type of voltage of the control supply voltage":"DC","Of The Contactor With Added Auxiliary Switch Block Typical":"10 000 000","For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gL/gG: 10 A","Of The Contactor With Added Electronics-Compatible Auxiliary Switch Block Typical":"5 000 000"}},"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=417105&mlfb=3RT1317-2BF40","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1317-2BF40/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings for the 3RT1317-2BF40?","answer":"It's a size S00 power contactor with a 110 VDC coil, 4 NO main contacts, spring-loaded terminals. Motor rating is 5.5 kW at AC-2, 400 V. Auxiliary contacts handle 10 A at 24 V, 6 A at 230 V, 3 A at 400 V. Mechanical life is 30 million operations."},{"question":"What wire sizes does the 3RT1317-2BF40 accept?","answer":"Spring-loaded terminals accept 2x (0.25 to 2.5 mm²) solid or stranded, or 2x (0.25 to 1.5 mm²) with ferrules. AWG equivalent is 2x (24 to 14)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1317-2BF40","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/3RT1317-2BF40 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}}