{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2018-2FB41","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2018-2FB41","canonicalUrl":"https://aoctrl.com/siemens/3RT2018-2FB41","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2018-2FB41","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT2018-2FB41 power contactor, size S00, 24 VDC coil, spring-type terminals, 10 A at 24 V DC, screw and snap-on 35 mm DIN rail mount.","salesMarkdown":"The 24 V DC coil is rated for a 10 A switching capacity at the same voltage, so it can handle moderate DC loads like small DC motors or solenoid valves directly. Switching frequency limits depend on the duty class: 1,000 operations per hour at AC-1 (resistive loads), 750 per hour at AC-2 and AC-3 (motor starting/running), and 250 per hour at AC-4 (plugging or inching). The AC-3e rating also allows 750 ops/hour for energy-efficient motors. These numbers tell you the contactor can keep up with a fast-cycling packaging line but needs derating for heavy inching duty. Mechanical life is typical 30 million cycles, with main contact electrical life between 20 and 12 million cycles depending on load. That puts this in the workhorse category for a panel that sees regular but not continuous switching — think batch processing rather than a 24/7 conveyor. Spring-type terminals on the coil mean no screw tightening — just strip to 8 mm and push in. That's tight enough for a crowded DIN rail but leaves room for wiring ducts if you plan ahead.","metaTitle":"Siemens 3RT2018-2FB41 SIRIUS Power Contactor, 24 VDC Coil, S","metaDescription":"Siemens SIRIUS 3RT2018-2FB41 power contactor, size S00, 24 VDC coil, 10 A at 24 V DC, spring-type terminals, DIN rail mount, current production.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"73 mm","Solid":"0.5 ... 4 mm²","Width":"45 mm","at DC":"38 ... 65 ms","Height":"70 mm","Upwards":"10 mm","Forwards":"10 mm","Stranded":"0.5 ... 4 mm²","Downwards":"10 mm","Arcing Time":"10 ... 15 ms","At The Side":"6 mm","Rated Value":"24 V","Initial Value":"0.8","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Spring-type terminals","at AC-1 maximum":"1 000 1/h","at AC-2 maximum":"750 1/h","at AC-3 maximum":"750 1/h","at AC-4 maximum":"250 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 60715","Full-Scale Value":"1.1","at AC-3e maximum":"750 1/h","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","Size Of Contactor":"S00","Solid Or Stranded":"2x (0,5 ... 4 mm²)","Product Brand Name":"SIRIUS","Product Designation":"Power 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":"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","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","Relative Humidity Minimum":"10 %","Of Main Circuit Rated Value":"6 kV","at AC-3 rated value maximum":"690 V","at AC in hot operating state":"3 W","at AC-3e rated value maximum":"690 V","at AC-4 at 400 V rated value":"11.5 A","safety-related switching OFF":"Yes","Substance Prohibitance (Date)":"10/01/2009","Design Of The Surge Suppressor":"diode","Of Auxiliary Circuit Rated Value":"6 kV","at AC-5a up to 690 V rated value":"19.4 A","at AC-5b up to 400 V rated value":"13.2 A","For Auxiliary And Control Circuit":"spring-loaded terminals","Function Module For Communication":"No","With Type Of Assignment 2 Required":"gG: 25A (690V,100kA), aM: 20A (690V,100kA), BS88: 25A (415V,80kA)","Without Load Current Share Typical":"4 W","closing power of magnet coil at DC":"4 W","holding power of magnet coil at DC":"4 W","At Contactor For Auxiliary Contacts":"Spring-type terminals","With Type Of Coordination 1 Required":"gG: 50A (690V,100kA), aM: 25A (690V,100kA), BS88: 50A (415V,80kA)","operational current at AC-12 maximum":"10 A","at AC in hot operating state per pole":"1 W","for AWG cables for auxiliary contacts":"2x (20 ... 12)","number of NO contacts for main contacts":"3","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":"3","Contact Reliability Of Auxiliary Contacts":"1 faulty switching per 100 million (17 V, 1 mA)","mirror contact according to IEC 60947-4-1":"Yes; with 3RH29","with low demand rate according to SN 31920":"40 %","Finely Stranded Without Core End Processing":"2x (0.5 ... 2.5 mm²)","with high demand rate according to SN 31920":"73 %","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)","minimum cross-section in main circuit at maximum AC-1 rated value":"4 mm²","number of NO contacts for auxiliary contacts instantaneous contact":"1","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/728429694a698faed0fe47e7330ff5ed.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=522265&mlfb=3RT2018-2FB41","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT2018-2FB41/alternatives.json"},"ai":{"faq":[{"question":"What are the key dimensions for panel layout?","answer":"The contactor measures 73 mm deep, 45 mm wide, and 70 mm high. Clearance requirements are 10 mm upwards, forwards, and downwards, and 6 mm at the sides."},{"question":"What wire sizes does the spring terminal accept?","answer":"The spring-type terminals accept solid or stranded wire from 0.5 to 4 mm², and can take two conductors of the same range per terminal."},{"question":"What is the switching capacity at 24 V DC?","answer":"At 24 V DC rated value, the contactor switches 10 A. At higher DC voltages the rating drops: 2 A at 48 V and 60 V, 1 A at 110 V, 0.9 A at 125 V, and 0.3 A at 220 V."},{"question":"Does this contactor include an auxiliary switch?","answer":"Yes, an auxiliary switch is included as standard on this model."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2018-2FB41","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/3RT2018-2FB41 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}}