{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1015-1WB42","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1015-1WB42","canonicalUrl":"https://aoctrl.com/siemens/3RT1015-1WB42","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1015-1WB42","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT1015-1WB42 power contactor, size S00, 24 V DC coil with integrated varistor, screw terminals, 10 A AC-12 rated operational current, 3 kW at AC-2 400 V.","salesMarkdown":"Auxiliary contact ratings are specified across voltages: 10 A at 24 V, 6 A at 230 V, 3 A at 400 V, and 0.3 A at 220 V DC. These values govern the switching capacity for control circuits, pilot lights, or PLC inputs connected through the auxiliary contacts. Short-circuit protection coordination is defined: Type 2 coordination requires a gL/gG fuse rated 20 A, while Type 1 coordination allows a 35 A fuse. This lets the panel designer select the upstream protection based on whether they need the contactor to remain serviceable after a fault (Type 2) or are willing to replace it (Type 1). The contactor measures 57.5 mm high and 72 mm deep, fitting within the S00 envelope. Terminals are IP20 finger-safe on the front and at the connection points. Screw terminals accept solid or stranded conductors: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or up to 2x (0.75 to 4 mm²) per clamp. AWG equivalents are 2x (20 to 16), 2x (18 to 14), or 1x 12.","metaTitle":"Siemens SIRIUS 3RT1015-1WB42 Power Contactor, S00, 24 VDC Co","metaDescription":"Siemens SIRIUS 3RT1015-1WB42 power contactor, size S00, 24 VDC coil with varistor. Rated 10 A at AC-12, 3 kW at AC-2 400 V. Current lifecycle stage. DIN rail mount. IP20.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"72 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), max. 2x (0.75 ... 4 mm²)","Width":"45 mm","Height":"57.5 mm","Maximum":"2 000 m","At The Side":"6 mm","Rated Value":"24 V","On The Front":"IP20","Initial Value":"0.85","Mounting type":"screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022","Of The Terminal":"IP20","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Full-scale value":"1.85","Size of contactor":"S00","Product brand name":"SIRIUS","Degree of pollution":"3","Product designation":"power contactor","at 24 V rated value":"10 A","at 60 V rated value":"2 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":"6 A","at 400 V rated value":"3 A","at 500 V rated value":"3.5 kW","at 690 V rated value":"4 kW","Instantaneous Contact":"0","Side-by-side mounting":"Yes","For Main Current Circuit":"screw-type terminals","Single Or Multi-Stranded":"2x (0,5 ... 1,5 mm²), 2x (0,75 ... 2,5 mm²), max. 2x (0,75 ... 4 mm²)","at AC-2 at 400 V rated value":"3 kW","at AC-4 at 400 V rated value":"6.5 A","Design of the surge suppressor":"with varistor","Closing power of magnet coil at DC":"1.4 W","Holding power of magnet coil at DC":"1.4 W","Operating current at AC-12 maximum":"10 A","With Type Of Assignment 2 Required":"fuse gL/gG: 20 A","at AWG conductors for main contacts":"2x (20 ... 16), 2x (18 ... 14), 1x 12","With Type Of Coordination 1 Required":"fuse gL/gG: 35 A","Reference code acc. to DIN EN 81346-2":"Q","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","at AWG conductors for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14), 1x 12","Contact reliability of auxiliary contacts":"1 faulty switching per 100 million (17 V, 1 mA)","For Auxiliary And Control Current Circuit":"screw-type terminals","at ambient temperature 40 °C rated value":"18 A","Type of voltage of the control supply voltage":"DC","For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gL/gG: 10 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$241.74","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=261910&mlfb=3RT1015-1WB42","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1015-1WB42/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional alternative to 3RT1015-1WB42?","answer":"The 3RT1015-1BB42 is the same S00 frame size and contactor family but with a 24 V AC coil instead of DC. The mechanical footprint and terminal layout are identical, so it drops into the same panel without rewiring the power circuit — only the coil supply needs to change from DC to AC."},{"question":"What are the key ratings for motor switching?","answer":"At AC-2 duty on 400 V, the contactor is rated for 3 kW. At AC-4 duty on 400 V, the rated operational current is 6.5 A. These cover slip-ring motor starting and reversing/inching applications respectively."},{"question":"What surge suppression is built into this contactor?","answer":"The coil includes an integrated varistor as the surge suppressor, eliminating the need for an external RC snubber or diode module across the 24 V DC coil."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1015-1WB42","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/3RT1015-1WB42 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}}