{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT6018-1BB42","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT6018-1BB42","canonicalUrl":"https://aoctrl.com/siemens/3RT6018-1BB42","factsUrl":"https://aoctrl.com/api/mcp/products/3RT6018-1BB42","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS S00 power contactor, 3RT6018-1BB42, 24 VDC coil, screw-type terminals, 7.5 kW at 230 V (60 °C), 13 kW at 400 V (60 °C), snap-on 35 mm DIN rail.","salesMarkdown":"The S00 frame — 45 mm wide, 57.5 mm tall, 73 mm deep — leaves room for auxiliary contact blocks alongside, since this contactor accepts add-on switches. ## Motor duty and thermal limits Rated AC-3 at 690 V maximum; AC-3e carries the same ceiling. At 60 °C ambient — typical inside a sealed enclosure — the motor power ratings drop to 7.5 kW at 230 V, 13 kW at 400 V, 22 kW at 690 V. Those are the numbers to use for a real panel thermal analysis, not the 40 °C values. ## Wiring and panel fit Screw terminals on main and auxiliary circuits accept 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or a single 4 mm² solid/stranded conductor. For AWG: 2x (20 to 16), 2x (18 to 14), or single 12 AWG. Minimum cross-section at 40 °C is 4 mm²; at 60 °C it's 2.5 mm² — the higher temperature demands thicker wire to keep terminal temperatures within limits. Side-by-side mounting is permitted — no mandatory gap between units, which helps pack more contactors per DIN-rail meter.","metaTitle":"Siemens 3RT6018-1BB42 SIRIUS S00 Power Contactor, 24 VDC, 7.","metaDescription":"Siemens SIRIUS 3RT6018-1BB42 power contactor, size S00, 24 VDC coil, 6 A holding current. Rated 7.5 kW at 230 V / 13 kW at 400 V (60 °C). Screw terminals, DIN rail mount. Current p","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"73 mm","Width":"45 mm","at DC":"10 000 1/h","Height":"57.5 mm","Rated Value":"24 V","During Storage":"-55 ... +80 °C","at AC-1 maximum":"1 000 1/h","at AC-3 maximum":"750 1/h","at AC-4 maximum":"250 1/h","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Fastening Method":"screw and snap-on mounting onto 35 mm DIN rail according to DIN EN 50022","at AC-3e maximum":"750 1/h","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","Degree Of Pollution":"3","Product Designation":"Power contactor","at 24 V rated value":"6 A","Of Contactor Typical":"30 000 000","at 110 V rated value":"1 A","at 220 V rated value":"0.3 A","at 230 V rated value":"10 A","at 400 V rated value":"3 A","at 690 V rated value":"1 A","Side-By-Side Mounting":"Yes","For Main Current Circuit":"screw-type terminals","at AC-3 rated value maximum":"690 V","at AC-3e rated value maximum":"690 V","Substance Prohibitance (Date)":"05/01/2012","at 40 °C minimum permissible":"4 mm²","at 60 °C minimum permissible":"2.5 mm²","Insulation Voltage Rated Value":"690 V","at 230 V at 60 °C rated value":"7.5 kW","at 400 V at 60 °C rated value":"13 kW","at 690 V at 60 °C rated value":"22 kW","at AWG cables for main contacts":"2x (20 ... 16), 2x (18 ... 14), 2x 12","For Auxiliary And Control Circuit":"screw-type terminals","Product Extension Auxiliary Switch":"Yes","With Type Of Assignment 2 Required":"gL/gG LV HRC 3NA, DIAZED 5SB, NEOZED 5SE: 20 A","closing power of magnet coil at DC":"4 W","holding power of magnet coil at DC":"4 W","Surge Voltage Resistance Rated Value":"6 kV","With Type Of Coordination 1 Required":"gL/gG LV HRC 3NA, DIAZED 5SB, NEOZED 5SE: 35 A","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":"0","number of NO contacts for main contacts":"3","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":"3","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","Type Of Voltage Of The Control Supply Voltage":"DC","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Required Spacing With Side-By-Side Mounting At The Side":"0 mm","Of The Contactor With Added Auxiliary Switch Block Typical":"10 000 000","For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gL/gG: 10 A","number of NC contacts for auxiliary contacts instantaneous contact":"1","number of NO contacts for auxiliary contacts instantaneous contact":"0"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/831991974b4ca8dc748f22f81f7e9c29.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=579949&mlfb=3RT6018-1BB42","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT6018-1BB42/alternatives.json"},"ai":{"faq":[{"question":"What is the depth of 3RT6018-1BB42?","answer":"The depth is 73 mm, fitting standard S00 contactor depth for DIN-rail panels."},{"question":"What is the width of 3RT6018-1BB42?","answer":"The width is 45 mm, matching the S00 frame size. Side-by-side mounting is permitted with no mandatory gap."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT6018-1BB42","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/3RT6018-1BB42 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}}