{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2518-1BM40","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2518-1BM40","canonicalUrl":"https://aoctrl.com/siemens/3RT2518-1BM40","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2518-1BM40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS contactor, Size S00, 24 VDC coil, screw-type terminals, 45 mm width, snap-on 35 mm DIN rail mounting.","salesMarkdown":"## Siemens 3RT2518-1BM40 — SIRIUS Size S00 Contactor Rated for DC switching at 24 V (10 A), 48 V (2 A), 60 V (2 A), 110 V (1 A), 125 V (2 A), 220 V (0.3 A), 230 V (10 A), 400 V (3 A), 440 V (0.8 A), and 600 V (0.1 A). These ratings define the DC-1 and DC-3 load curves — useful for solenoid, brake, and DC motor loads where the arc extinction differs from AC. The contactor's footprint is 45 mm wide, 57.5 mm high, and 73 mm deep — a compact S00 frame that fits standard panel layouts. Side-by-side mounting is permitted with 6 mm spacing at the side; zero clearance allowed upwards, downwards, forwards, and backwards, giving flexibility in dense enclosures. Terminals accept solid or stranded conductors: 2x (0.5...1.5 mm²), 2x (0.75...2.5 mm²), or 2x 4 mm². The screw-type clamp on both main and coil circuits means a standard Pozidriv bit handles the connection — no special tooling required for panel wiring.","metaTitle":"Siemens 3RT2518-1BM40 SIRIUS Contactor, Size S00, 24 VDC coi","metaDescription":"Siemens 3RT2518-1BM40 SIRIUS contactor, Size S00, 24 VDC coil, screw terminals. Current lifecycle stage. Sourced to order against RFQ. 45 mm wide, snap-on DIN rail mount.","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":"220 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":"16 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","With Type Of Assignment 2 Required":"gG: 20A (690V, 100kA)","at 24 V per NC contact rated value":"20 A","at 24 V per NO contact rated value":"20 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":"4 kW","at 400 V per NC contact rated value":"4 kW","at 400 V per NO contact rated value":"7.5 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":"22 A","at ambient temperature 60 °C rated value":"20 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":"2 hp","Limited To 1 S Switching At Zero Current Maximum":"165 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 5 S Switching At Zero Current Maximum":"165 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 10 S Switching At Zero Current Maximum":"128 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 30 S Switching At Zero Current Maximum":"92 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 60 S Switching At Zero Current Maximum":"74 A; Use minimum cross-section acc. to AC-1 rated value","contact rating of auxiliary contacts according to UL":"A600 / Q600","Inductive Power Factor With Closing Power Of The Coil":"0.8","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":"4 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":"2.2 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=10881&mlfb=3RT2518-1BM40","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT2518-1BM40/alternatives.json"},"ai":{"faq":[{"question":"What is the depth of 3RT2518-1BM40?","answer":"The depth is 73 mm, with a width of 45 mm and height of 57.5 mm."},{"question":"Where can I buy 3RT2518-1BM40?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time."},{"question":"What wire sizes does the 3RT2518-1BM40 accept?","answer":"The screw terminals accept solid or stranded conductors: 2x (0.5...1.5 mm²), 2x (0.75...2.5 mm²), or 2x 4 mm²."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2518-1BM40","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/3RT2518-1BM40 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}}