{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2518-1AH00","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2518-1AH00","canonicalUrl":"https://aoctrl.com/siemens/3RT2518-1AH00","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2518-1AH00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT2518-1AH00 contactor, size S00, 45 mm width, 73 mm depth, screw-type coil terminals, auxiliary switch, snap-on 35 mm DIN rail mount.","salesMarkdown":"The contactor carries a 24 V DC rated switching current of 10 A, dropping to 2 A at 48 V and 60 V, 1 A at 110 V, and 0.3 A at 220 V. At 230 V DC it returns to 10 A, then 3 A at 400 V, 0.8 A at 440 V, and 0.1 A at 600 V. These are the DC-1 resistive load ratings — for inductive DC loads (DC-3/DC-5) you typically derate by 50-70%, so the 24 V 10 A figure is for heaters or lamps, not solenoids or DC motors. The mechanical service life is rated at 30,000,000 operations typical, and the maximum switching frequency at AC-1 duty is 1,000 operations per hour. At DC the maximum switching frequency is 10,000 operations per hour. ## Wiring and conductor sizing The screw-type terminals accept solid or stranded conductors: 2x 0.5 to 1.5 mm², 2x 0.75 to 2.5 mm², or 2x 4 mm². This covers most control-circuit wiring (1.5 mm² for coil leads) and main power wiring up to 4 mm² for the load circuit.","metaTitle":"Siemens SIRIUS 3RT2518-1AH00 Contactor, Size S00, 45 mm Widt","metaDescription":"Siemens SIRIUS 3RT2518-1AH00 contactor, size S00, 45 mm wide, 73 mm deep. Screw terminals, auxiliary switch, snap-on DIN rail mount. Active production. Sourced to order.","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":"4 ... 15 ms","at DC":"10 000 1/h","Height":"57.5 mm","Upwards":"0 mm","Forwards":"0 mm","at 50 Hz":"0.25","at 60 Hz":"0.25","Backwards":"0 mm","Downwards":"0 mm","Arcing Time":"10 ... 15 ms","At The Side":"6 mm","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","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 50 Hz rated value":"48 V","at 60 Hz rated value":"48 V","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","at AC at 230 V maximum permissible":"0.004 A","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)","operational current at AC-12 maximum":"10 A","for AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14), 2x 12","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","apparent holding power of magnet coil at AC":"4.2 VA","apparent pick-up power of magnet coil at AC":"37 VA","Type Of Voltage Of The Control Supply Voltage":"AC","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","Inductive Power Factor With The Holding Power Of The Coil":"0.25","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":"https://cdn.aoctrl.com/34dec091cad4d9a9a14132c101270581.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=425099&mlfb=3RT2518-1AH00","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT2518-1AH00/alternatives.json"},"ai":{"faq":[{"question":"What is the depth of the 3RT2518-1AH00?","answer":"The depth is 73 mm."},{"question":"What conductor sizes does the 3RT2518-1AH00 accept?","answer":"The screw terminals accept 2x 0.5 to 1.5 mm², 2x 0.75 to 2.5 mm², or 2x 4 mm² solid or stranded wire."},{"question":"Will the 3RT2518-1AH00 drop into a panel specified for the 3RT2016-1AH01?","answer":"Both are size S00 contactors with the same 45 mm width and 35 mm DIN rail mounting, so the footprint is identical. The 3RT2518-1AH00 has a 73 mm depth versus the 3RT2016-1AH01's depth — verify the panel depth clearance, but the mounting hole pattern and rail clip are the same SIRIUS S00 platform."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2518-1AH00","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/3RT2518-1AH00 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}}