{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2516-1BW40","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2516-1BW40","canonicalUrl":"https://aoctrl.com/siemens/3RT2516-1BW40","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2516-1BW40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT2516-1BW40 contactor, size S00, 24 VDC coil, screw-type terminals, 45 mm width, snap-on DIN rail mounting.","salesMarkdown":"## SIRIUS Size S00 Contactor with 24 VDC Coil It mounts via screw or snap-on onto 35 mm DIN rail per DIN EN 50022, and the mounting position allows +/-180° rotation on a vertical surface, plus forward/backward tilt of +/-22.5°. This gives panel builders flexibility in tight enclosures, though side clearance of 6 mm is specified for heat dissipation when mounting side-by-side. The auxiliary switch on this contactor carries DC ratings that drop significantly as voltage rises — a common constraint for DC switching. At 24 V it handles 10 A, but at 48 V that falls to 2 A, and at 110 V it's 1 A. At 220 V it's down to 0.3 A, and at 600 V only 0.1 A. These are the maximum currents the auxiliary contacts can interrupt at those DC voltages. If you're switching a 48 VDC control circuit, the 2 A rating is the limit; exceeding it risks welding the contacts. The mechanical life of the contactor is typical 30,000,000 operations — this is the unloaded mechanical endurance, not the electrical life under load. Electrical life depends on the switching duty: at AC-1 (resistive load) the maximum switching rate is 1,000 operations per hour, while the general AC switching rate is 10,000 per hour. The coil pick-up and drop-out thresholds are specified as 0.8 x rated voltage for pick-up and 1.1 x rated voltage for drop-out — meaning at 24 VDC nominal, the coil will pick up at 19.2 V and drop out at 26.4 V. ## Wiring and Integration The screw-type terminals on the main circuit accept solid or stranded conductors: 2x 0.5 to 1.5 mm², 2x 0.75 to 2.5 mm², or 2x 4 mm². The coil terminals are also screw-type. The 45 mm width and 57.5 mm height with 73 mm depth make it a compact fit for a size S00 contactor — it occupies roughly the same footprint as a miniature circuit breaker. Side-by-side mounting is permitted, so multiple contactors can be ganged without spacing, provided the 6 mm side clearance to adjacent components is respected for thermal management.","metaTitle":"Siemens 3RT2516-1BW40 SIRIUS Contactor, Size S00, 24 VDC Coi","metaDescription":"Siemens SIRIUS 3RT2516-1BW40 contactor, size S00, 24 VDC coil, screw terminals, 45 mm wide. Current lifecycle stage. Sourced to order. RFQ for pricing.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"73 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), 2x 4 mm²","Width":"45 mm","at AC":"10 000 1/h","at DC":"7 ... 13 ms","Height":"57.5 mm","Upwards":"0 mm","Forwards":"0 mm","Backwards":"0 mm","Downwards":"0 mm","Arcing Time":"10 ... 15 ms","At The Side":"6 mm","Rated Value":"48 V","Initial Value":"0.8","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Screw-type terminals","at AC-1 maximum":"1 000 1/h","lifecycle_stage":"current","Auxiliary Switch":"Yes","During Operation":"-25 ... +60 °C","Fastening Method":"screw and snap-on mounting onto 35 mm DIN rail according to DIN EN 50022","Full-Scale Value":"1.1","Mounting Position":"+/-180° rotation possible on vertical mounting surface; can be tilted forward and backward by +/- 22.5° on vertical mounting surface","Size Of Contactor":"S00","Solid Or Stranded":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), 2x 4 mm²","Product Brand Name":"SIRIUS","Product Designation":"contactor","at 24 V rated value":"10 A","at 48 V rated value":"2 A","at 60 V rated value":"2 A","Of Contactor Typical":"30 000 000","at 110 V rated value":"1 A","at 125 V rated value":"2 A","at 220 V rated value":"0.3 A","at 230 V rated value":"10 A","at 400 V rated value":"3 A","at 440 V rated value":"0.8 A","at 600 V rated value":"0.1 A","Side-By-Side Mounting":"Yes","For Main Current Circuit":"screw-type terminals","Relative Humidity Minimum":"10 %","per NC contact rated value":"9 A","per NO contact rated value":"9 A","Of Main Circuit Rated Value":"6 kV","Substance Prohibitance (Date)":"10/01/2009","Of Auxiliary Circuit Rated Value":"6 kV","For Auxiliary And Control Circuit":"screw-type terminals","Function Module For Communication":"No","at DC at 24 V maximum permissible":"0.01 A","With Type Of Assignment 2 Required":"gG: 20A (690V, 100kA)","at 24 V per NC contact rated value":"16 A","at 24 V per NO contact rated value":"16 A","closing power of magnet coil at DC":"4 W","holding power of magnet coil at DC":"4 W","At Contactor For Auxiliary Contacts":"Screw-type terminals","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":"2.2 kW","at 230 V per NO contact rated value":"2.2 kW","at 400 V per NC contact rated value":"4 kW","at 400 V per NO contact rated value":"4 kW","With Type Of Coordination 1 Required":"gG: 35 A (690 V, 100 kA)","at AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14), 2x 12","operational current at AC-12 maximum":"10 A","number of NC contacts for main contacts":"2","number of NO contacts for main contacts":"2","reference code according to IEC 81346-2":"Q","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","Contact Reliability Of Auxiliary Contacts":"1 faulty switching per 100 million (17 V, 1 mA)","at ambient temperature 40 °C rated value":"18 A","at ambient temperature 60 °C rated value":"16 A","mirror contact according to IEC 60947-4-1":"Yes; with 3RH29","Type Of Voltage Of The Control Supply Voltage":"DC","for 3-phase AC motor at 460/480 V rated value":"5 hp","for single-phase AC motor at 230 V rated value":"1 hp","Limited To 1 S Switching At Zero Current Maximum":"110 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 5 S Switching At Zero Current Maximum":"110 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 10 S Switching At Zero Current Maximum":"86 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 30 S Switching At Zero Current Maximum":"66 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 60 S Switching At Zero Current Maximum":"54 A; Use minimum cross-section acc. to AC-1 rated value","contact rating of auxiliary contacts according to UL":"A600 / Q600","Of Main Circuit With Degree Of Pollution 3 Rated Value":"690 V","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","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 gG: 10 A","minimum cross-section in main circuit at maximum AC-1 rated value":"2.5 mm²","number of NC contacts for auxiliary contacts instantaneous contact":"0","number of NO contacts for auxiliary contacts instantaneous contact":"0","AWG number as coded connectable conductor cross section for main contacts":"20 ... 12","Of The Contactor With Added Electronically Optimized Auxiliary Switch Block Typical":"5 000 000","power loss [W] at AC-3 at 400 V for rated value of the operational 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=120729&mlfb=3RT2516-1BW40","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT2516-1BW40/alternatives.json"},"ai":{"faq":[{"question":"What are the key DC ratings for the auxiliary contacts?","answer":"At 24 VDC the auxiliary contacts are rated 10 A, at 48 VDC 2 A, at 110 VDC 1 A, at 220 VDC 0.3 A, and at 600 VDC 0.1 A. These are the maximum interrupting currents at those voltages."},{"question":"What is the physical size and mounting method?","answer":"The contactor measures 45 mm wide, 57.5 mm high, and 73 mm deep. It mounts via screw or snap-on onto 35 mm DIN rail per DIN EN 50022. Mounting position allows +/-180° rotation and +/-22.5° tilt."},{"question":"What wire sizes does the screw terminal accept?","answer":"The main circuit screw terminals accept 2x 0.5 to 1.5 mm², 2x 0.75 to 2.5 mm², or 2x 4 mm² solid or stranded conductors."},{"question":"Can this contactor be mounted side-by-side with others?","answer":"Yes, side-by-side mounting is permitted, but maintain 6 mm side clearance to adjacent components for heat dissipation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2516-1BW40","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/3RT2516-1BW40 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}}