{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2518-2XB40-0LA2","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2518-2XB40-0LA2","canonicalUrl":"https://aoctrl.com/siemens/3RT2518-2XB40-0LA2","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2518-2XB40-0LA2","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3RT2518-2XB40-0LA2 contactor, size S00, DC magnet coil 24-34 V, spring-type terminals, screw and snap-on mounting on 35 mm DIN rail, 45 x 70 x 73 mm.","salesMarkdown":"## Size S00 footprint and DIN-rail mounting The 3RT2518-2XB40-0LA2: Size S00 frame keeps the panel footprint tight at 45 mm wide, 70 mm tall, 73 mm deep — fits in high-density layouts where every DIN-rail millimeter is budgeted. Mounting is screw-and-snap onto 35 mm DIN rail per EN 50022. The contactor can be rotated ±180° on a vertical surface and tilted ±22.5° forward or backward, which helps when the gland plate or busbar layout forces an unconventional orientation. Clearance requirements: 6 mm at the sides, 10 mm upward, forward, and downward. That keeps the arc-chute venting and coil heat dissipation within the enclosure's thermal budget. ## DC coil with spring-type terminals — wiring and control logic The magnet coil is rated for 24-34 V DC with a 2.3 A inrush peak and 10 A holding current at 24 V rated value. The DC coil eliminates the hum and heat of an AC coil in continuous-duty applications. Spring-type terminals accept 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or 2x 4 mm² solid/stranded — no screw torque check, no loosening under vibration. The auxiliary switch is integrated, saving a separate order line and a DIN slot. ## Environmental range and switching duty Operating temperature spans -40 to +70 °C, storage from -55 to +80 °C — the contactor handles unheated plant floors and hot panel interiors without derating. Arcing time is 10-15 ms, DC dropout 25-45 ms. At AC-4 maximum the contactor cycles 250 operations per hour — sized for frequent jogging or inching duty on motor loads.","metaTitle":"Siemens 3RT2518-2XB40-0LA2 Contactor, Size S00, DC Coil","metaDescription":"Siemens 3RT2518-2XB40-0LA2 contactor, size S00, DC magnet coil 24-34 V, spring-type terminals. Current production — quoted to order against BOM quantities.","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 DC":"25 ... 45 ms","Height":"70 mm","Upwards":"10 mm","Forwards":"10 mm","Downwards":"10 mm","Arcing Time":"10 ... 15 ms","At The Side":"6 mm","Rated Value":"24 ... 34 V","Initial Value":"0.7","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Spring-type terminals","Type Of Voltage":"DC","at AC-4 maximum":"250 1/h","lifecycle_stage":"current","Auxiliary Switch":"Yes","During Operation":"-40 ... +70 °C","Fastening Method":"screw and snap-on mounting onto 35 mm DIN rail according to DIN EN 50022","Full-Scale Value":"1.25","For Main Contacts":"20 ... 12","Mounting Position":"+/-180° rotation possible on vertical mounting surface, can be tilted forward and backward by +/- 22.5° on vertical mounting surface, standing, on horizontal mounting surface","Size Of Contactor":"S00","Solid Or Stranded":"2x (0,5 ... 4 mm²)","Inrush Current Peak":"2.3 A","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":"0.9 A","at 220 V rated value":"0.3 A","at 230 V rated value":"2 hp","at 400 V rated value":"3 A","at 440 V rated value":"0.2 A","at 480 V rated value":"14 A","at 500 V rated value":"2 A","at 600 V rated value":"11 A","at 690 V rated value":"1 A","Instantaneous Contact":"0","Side-By-Side Mounting":"Yes","For Auxiliary Contacts":"20 ... 12","For Main Current Circuit":"spring-loaded terminals","at 110/120 V rated value":"1 hp","at 200/208 V rated value":"3 hp","at 220/230 V rated value":"5 hp","at 460/480 V rated value":"10 hp","at 575/600 V rated value":"10 hp","Locked-Rotor Current Peak":"0.18 A","Relative Humidity Minimum":"10 %","Of Main Circuit Rated Value":"6 kV","at AC-3 rated value maximum":"400 V","at maximum AC-1 rated value":"4 mm²","at AC in hot operating state":"6.6 W","at AC-2 at 400 V rated value":"7.5 kW","at AC-4 at 400 V rated value":"11.5 A","Substance Prohibitance (Date)":"10/01/2009","Design Of The Surge Suppressor":"with varistor","Duration Of Inrush Current Peak":"50 µs","Locked-Rotor Current Mean Value":"0.18 A","Duration Of Locked-Rotor Current":"250 ms","Of Auxiliary Circuit Rated Value":"6 kV","For Auxiliary And Control Circuit":"spring-loaded terminals","Function Module For Communication":"No","Product Function Bus Communication":"No","With Type Of Assignment 2 Required":"gG NH 3NA, DIAZED 5SB, NEOZED 5SE: 20 A","Without Load Current Share Typical":"0.7 W","closing power of magnet coil at DC":"4 W","holding power of magnet coil at DC":"0.9 W","At Contactor For Auxiliary Contacts":"Spring-type terminals","With Type Of Coordination 1 Required":"gG NH 3NA, DIAZED 5SB, NEOZED 5SE: 35 A","at AWG cables for auxiliary contacts":"2x (20 ... 12)","operational current at AC-12 maximum":"10 A","at AC in hot operating state per pole":"2.2 W","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 ... 2.5 mm²)","Number Of Poles For Main Current Circuit":"4","Product Function Short Circuit Protection":"No","mirror contact according to IEC 60947-4-1":"Yes","Finely Stranded Without Core End Processing":"2x (0.5 ... 2.5 mm²)","number of NC contacts for auxiliary contacts":"0","number of NO contacts for auxiliary contacts":"0","Type Of Voltage Of The Control Supply Voltage":"DC","Limited To 1 S Switching At Zero Current Maximum":"300 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 5 S Switching At Zero Current Maximum":"169 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","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":"gG: 10 A (500 V, 1 kA)","Of The Contactor With Added Electronically Optimized Auxiliary Switch Block Typical":"5 000 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/f14432b81503293f374f3a90e90f1fd1.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1672706&mlfb=3RT2518-2XB40-0LA2","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT2518-2XB40-0LA2/alternatives.json"},"ai":{"faq":[{"question":"What is 3RT2518-2XB40-0LA2's listed depth?","answer":"The depth is 73 mm. Combined with the 45 mm width and 70 mm height, the size S00 frame fits standard 80 mm deep enclosures with room for wiring clearance."},{"question":"What wire sizes does the spring-type terminal accept?","answer":"The terminals accept 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or 2x 4 mm² solid or stranded conductors — no ferrule required for solid wire."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2518-2XB40-0LA2","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/3RT2518-2XB40-0LA2 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}}