{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2018-2AP01","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2018-2AP01","canonicalUrl":"https://aoctrl.com/siemens/3RT2018-2AP01","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2018-2AP01","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, 3RT2018-2AP01, size S00, 3-pole, 24 VDC coil, spring-type terminals, screw and snap-on DIN rail mounting, with auxiliary switch.","salesMarkdown":"It carries a 24 VDC coil with spring-type terminals and includes an integrated auxiliary switch for status feedback or interlocking. Rated for 2 hp at 230 V, this contactor handles typical 3-phase motor applications up to that power level. The main contacts are rated for 20 to 12 A depending on the duty cycle (AC-1 through AC-4), with maximum switching frequencies ranging from 250 operations per hour under AC-4 to 1000 per hour under AC-1. The auxiliary contact block provides additional switching capacity for control circuits: rated 10 A at 24 V, 3 A at 400 V, and 2 A at 48/60 V, among other values. This allows direct feedback to a PLC or relay without an extra interface module. The spring-type coil terminals are tool-less — strip, push, done. No torque driver needed for the coil connection. Rated for 50/60 Hz operation at 0.25 A control supply. These numbers matter when coordinating with fast-acting PLC outputs or safety relays.","metaTitle":"Siemens 3RT2018-2AP01 SIRIUS Power Contactor, Size S00, 24 V","metaDescription":"Siemens SIRIUS 3RT2018-2AP01 power contactor, size S00, 24 VDC coil, 3-pole main contacts, auxiliary switch, screw and snap-on 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 AC":"4 ... 15 ms","title":"3RT2018-2AP01","Height":"70 mm","Upwards":"10 mm","Forwards":"10 mm","Stranded":"0.5 ... 4 mm²","at 50 Hz":"0.25","at 60 Hz":"0.25","Downwards":"10 mm","Arcing Time":"10 ... 15 ms","At The Side":"6 mm","description":"power contactor, AC-3e/AC-3, 16 A, 7.5 kW / 400 V, 3-pole, 230 V AC, 50/60 Hz, auxiliary contacts: 1 NO, spring-loaded terminal, size: S00","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","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 50 Hz rated value":"230 V","at 500 V rated value":"2 A","at 60 Hz rated value":"230 V","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","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":"5.7 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":"AC","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":"$26.67","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/2dbd845c15781b6f81b8efb361eaf41f.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=56105&mlfb=3RT2018-2AP01"},"ai":{"faq":[{"question":"What is the closest functional alternative if I cannot source this exact part?","answer":"The 3RT2026-1AG20 is a peer in the same SIRIUS family and S00 frame size, but with a different coil voltage (230 VAC vs 24 VDC). It will not drop in without changing the coil supply. For a 24 VDC coil replacement, verify the coil rating matches — the 3RT2024-2BB40 uses a different coil voltage as well. Always confirm the coil voltage before substituting."},{"question":"What are the key dimensions for panel layout?","answer":"Width 45 mm, height 70 mm, depth 73 mm. Clearance: 10 mm above, below, and in front; 6 mm on each side."},{"question":"What wire sizes does the contactor accept?","answer":"Solid or stranded conductors from 0.5 to 4 mm², single or two conductors per terminal (2x 0.5–4 mm²)."},{"question":"Will this contactor fit a panel designed for the 3RT2026-1AG20?","answer":"Mechanically yes — both are S00 size with the same DIN rail footprint and clearance requirements. The difference is the coil voltage: this unit is 24 VDC, while the 3RT2026-1AG20 is 230 VAC. Verify your control voltage before swapping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2018-2AP01","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/3RT2018-2AP01 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}