{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1316-2BW40","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1316-2BW40","canonicalUrl":"https://aoctrl.com/siemens/3RT1316-2BW40","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1316-2BW40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, size S00, 3RT1316-2BW40, 48 VDC coil, 4 NO main contacts, spring-loaded terminals, 10 A AC-12, 45 mm width.","salesMarkdown":"## What this contactor is and who it's for The 48 VDC coil pulls 10 A at pickup and holds at 3.3 W, with a pick-up threshold of 0.85x rated voltage and drop-out at 1.1x — meaning it reliably engages at 40.8 V and stays sealed until the supply rises above 52.8 V. For motor switching in AC-2 duty at 400 V, it handles 4 kW, which covers small pumps and fans. For resistive loads (AC-1), it switches 6 A at 230 V and 3 A at 400 V. The AC-12 maximum operating current is 10 A, so it can also serve as a coupler for PLC outputs driving smaller contactor coils. ## Termination and wiring Main circuit connections use spring-loaded terminals accepting 2x (0.25 to 2.5 mm²) solid or 2x (0.25 to 1.5 mm²) fine-stranded with ferrules, or 2x (24 to 14 AWG). The IP20 protection on the front and terminals means it's safe for finger contact inside a closed panel. For Type 1 coordination (no damage but may need replacement after a fault), use a 35 A gL/gG fuse. For Type 2 coordination (no welding and immediate reuse), use a 20 A gL/gG fuse.","metaTitle":"Siemens 3RT1316-2BW40 SIRIUS Contactor, 48 VDC Coil, 4 NO","metaDescription":"Siemens SIRIUS 3RT1316-2BW40 power contactor, size S00, 48 VDC coil, 4 NO main contacts, spring-loaded terminals, 10 A AC-12, 6 A at 230 V. Current production. RFQ.","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":"48 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":"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 (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":"18 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=272024&mlfb=3RT1316-2BW40","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1316-2BW40/alternatives.json"},"ai":{"faq":[{"question":"What conductor sizes does the spring terminal accept?","answer":"Solid conductors: 2x (0.25 to 2.5 mm²). Fine-stranded with ferrules: 2x (0.25 to 1.5 mm²). AWG: 2x (24 to 14)."},{"question":"Can this contactor be mounted side-by-side without gaps?","answer":"Yes, side-by-side mounting is permitted with zero side clearance required, so you can pack units directly adjacent on the DIN rail."},{"question":"What fuse sizes are recommended for short-circuit coordination?","answer":"Type 1 coordination: 35 A gL/gG. Type 2 coordination: 20 A gL/gG."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1316-2BW40","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/3RT1316-2BW40 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}}