{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1516-2BB40","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1516-2BB40","canonicalUrl":"https://aoctrl.com/siemens/3RT1516-2BB40","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1516-2BB40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, size S00, 24 VDC coil, spring-loaded terminals, 45 mm width, IP20, for screw and snap-on mounting on 35 mm DIN rail.","salesMarkdown":"## What it is and where it lands The Siemens 3RT1516-2BB40 is a SIRIUS power contactor in frame size S00, designed for switching loads in control panels and motor circuits. It mounts via screw or snap-on onto 35 mm standard mounting rail per DIN EN 50022, so it integrates directly into a DIN-rail enclosure without adapter plates. The 24 VDC coil pulls in at 85 % of rated voltage and holds reliably; the DC switching capacity is 10 A at 24 V, 2 A at 60 V, 1 A at 110 V, and 0.3 A at 220 V — these are the numbers that govern whether this contactor handles your DC load without welding contacts. Spring-loaded terminals on the main circuit accept 2x (0.25 to 2.5 mm²) solid or stranded wire, so you land the power wiring without torquing screws — a time-saver on repetitive panel builds. ## What the ratings mean for fit The 45 mm width and 72 mm depth fit a standard 45 mm slot on the DIN rail; height is 60 mm. Side-by-side mounting is permitted, so you can pack multiple contactors in a row without derating for heat buildup at the rated ambient of -25 to +60 °C operating. IP20 on the front and at the terminals means the contactor is finger-safe inside an enclosure but not protected against moisture ingress — it belongs in a panel, not in a washdown zone. Auxiliary contacts rated 9 A per NO or NC. Impulse withstand voltage is 6 kV on both main and auxiliary circuits.","metaTitle":"Siemens 3RT1516-2BB40 SIRIUS Power Contactor, 24 VDC Coil, S","metaDescription":"Siemens 3RT1516-2BB40 SIRIUS power contactor, size S00, 24 VDC coil, 10 A at 24 V DC switching, spring-loaded terminals, IP20. Sourced to order against 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","at DC":"7 ... 10 ms","Height":"60 mm","Maximum":"2 000 m","Arcing time":"10 ... 15 ms","At The Side":"6 mm","Rated Value":"24 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","During Storage":"-55 ... +80 °C","Of The Terminal":"IP20","at AC-1 maximum":"1 000 1/h","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Full-scale value":"1.1","Mounting position":"with vertical mounting surface +/-180° rotatable, with vertical mounting surface +/- 30° tiltable to the front and back","Size of contactor":"S00","Product brand name":"SIRIUS","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","at 440 V rated value":"0.8 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)","per NC contact rated value":"9 A","per NO contact rated value":"9 A","Of Main Circuit Rated Value":"6 kV","at maximum AC-1 rated value":"2.5 mm²","Of Auxiliary Circuit Rated Value":"6 kV","at DC at 24 V maximum permissible":"0.01 A","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 24 V per NC contact rated value":"16 A","at 24 V per NO contact rated value":"16 A","Protection against electrical shock":"finger-safe","at 110 V per NC contact rated value":"0.175 A","at 110 V per NO contact rated value":"0.35 A","at 220 V per NC contact rated value":"0.375 A","at 220 V per NO contact rated value":"0.75 A","at 230 V per NC contact rated value":"3 kW","at 230 V per NO contact rated value":"3 kW","at 400 V per NC contact rated value":"4 kW","at 400 V per NO contact rated value":"4 kW","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":"2","Number of NO contacts for main contacts":"2","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","Finely Stranded Without Core End Processing":"2x (0.25 ... 2.5 mm²)","Type of voltage of the control supply voltage":"DC","Of Main Circuit With Degree Of Pollution 3 Rated Value":"690 V","Of The Contactor With Added Auxiliary Switch Block Typical":"10 000 000","Of Auxiliary Circuit With Degree Of Pollution 3 Rated Value":"690 V","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","Power loss [W] at AC-3 at 400 V for rated value of the operating current per conductor":"0.7 W"}},"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=451722&mlfb=3RT1516-2BB40","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1516-2BB40/alternatives.json"},"ai":{"faq":[{"question":"Will 3RT1516-2BB40 drop into a panel specified around 3RT1016-2AP02 without rewiring?","answer":"Both are S00 frame contactors with the same 45 mm width and DIN-rail mounting, so the mechanical footprint is identical. The main difference is the coil voltage — 3RT1516-2BB40 is 24 VDC, while 3RT1016-2AP02 uses a different coil. Verify coil supply before substitution; the terminal layout and wiring space are the same."},{"question":"What is the mounting method for this contactor?","answer":"It mounts via screw or snap-on onto 35 mm standard mounting rail per DIN EN 50022, with the mounting surface vertical and rotatable ±180° or tiltable ±30° front-to-back."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1516-2BB40","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/3RT1516-2BB40 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}}