{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1316-1BD40","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1316-1BD40","canonicalUrl":"https://aoctrl.com/siemens/3RT1316-1BD40","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1316-1BD40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, size S00, 3RT1316-1BD40, 4 NO main contacts, 4 kW at AC-2 400 V, screw terminals, 45 mm width.","salesMarkdown":"It carries four normally open main contacts, rated for 4 kW at AC-2 duty on a 400 V supply — that's the motor switching rating for slip-ring or wound-rotor motors, where the inrush isn't as brutal as AC-3. For resistive loads (AC-12), it handles up to 10 A. The coil is a DC-operated type, pulling 3.3 W on both close and hold, so the control transformer sizing is straightforward. The 45 mm width and 57.5 mm height fit the S00 footprint, and side-by-side mounting is allowed with 6 mm spacing to adjacent devices for heat dissipation. The IP20 finger-safe protection on the front and terminals is typical for enclosed panel use. Main circuit terminals are screw-type, accepting solid or stranded copper: 2x 0.5–1.5 mm², 2x 0.75–2.5 mm², or max 2x 0.75–4 mm². For AWG, that's 2x 20–16, 2x 18–14, or 1x 12. Finely stranded wire with ferrule is also supported in the same ranges. The DC coil terminals follow the same wire size specs. For short-circuit protection, Type 2 coordination (no welding) requires a gL/gG 20 A fuse; Type 1 (welding allowed, no fire) allows up to 35 A gL/gG. ## Switching capacity across voltages The contactor's switching capacity varies by voltage for DC loads: 10 A at 24 V, 2 A at 60 V, 1 A at 110 V, and 0.3 A at 220 V. For AC loads at 230 V it's 6 A, and at 400 V it's 3 A. These are the make-and-break ratings for the main contacts, not continuous carry — the AC-12 rating of 10 A is the continuous resistive current limit.","metaTitle":"Siemens 3RT1316-1BD40 SIRIUS Contactor, 4 NO, 4 kW AC-2","metaDescription":"Siemens SIRIUS 3RT1316-1BD40 power contactor, size S00, 4 NO main contacts, 4 kW at AC-2 400 V. Current production. Screw terminals, 45 mm wide. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"72 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), max. 2x (0.75 ... 4 mm²)","Width":"45 mm","Height":"57.5 mm","Maximum":"2 000 m","At The Side":"6 mm","Rated Value":"42 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":"screw-type terminals","Single Or Multi-Stranded":"2x (0,5 ... 1,5 mm²), 2x (0,75 ... 2,5 mm²), max. 2x (0,75 ... 4 mm²)","at AC-2 at 400 V rated value":"4 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 (20 ... 16), 2x (18 ... 14), 1x 12","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 (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Number of poles for main current circuit":"4","at AWG conductors for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14), 1x 12","Contact reliability of auxiliary contacts":"1 faulty switching per 100 million (17 V, 1 mA)","For Auxiliary And Control Current Circuit":"screw-type terminals","at ambient temperature 40 °C rated value":"18 A","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=128690&mlfb=3RT1316-1BD40","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1316-1BD40/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings for this contactor?","answer":"It's a size S00 contactor with 4 NO main contacts, rated 4 kW at AC-2 400 V for motor switching, and 10 A at AC-12 for resistive loads. The DC coil draws 3.3 W. Operating temperature range is -25 to +60 °C."},{"question":"What wire sizes does the screw terminal accept?","answer":"The main circuit screw terminals accept 2x 0.5–1.5 mm², 2x 0.75–2.5 mm², or max 2x 0.75–4 mm² solid or stranded copper, with equivalent AWG of 2x 20–16, 2x 18–14, or 1x 12."},{"question":"What short-circuit protection is required?","answer":"For Type 2 coordination (no welding after fault), use a gL/gG 20 A fuse. For Type 1 coordination (welding allowed), a gL/gG 35 A fuse is permitted."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1316-1BD40","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/3RT1316-1BD40 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}}