{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1015-1HB42","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1015-1HB42","canonicalUrl":"https://aoctrl.com/siemens/3RT1015-1HB42","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1015-1HB42","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS, power contactor, size S00, 3RT1015-1HB42, 24 V DC coil, screw terminals, 45 mm width, IP20 front.","salesMarkdown":"## Panel fit and coil drive The Siemens SIRIUS 3RT1015-1HB42 is a size S00 power contactor with a 24 V DC coil, designed for screw and snap-on mounting onto a 35 mm standard mounting rail per DIN EN 50022. Coil closing and holding power are both 2.3 W DC, so a standard 24 VDC PSU with a 3 W per-device budget covers it without derating. ## Contact ratings and switching duty Main contacts are rated 10 A at 24 V and 6 A at 230 V, with an AC-4 rating of 6.5 A at 400 V for reversing or inching duty. For resistive loads (AC-12), the maximum operating current is 10 A. ## Wiring and protection coordination Screw-type terminals on the main circuit accept 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or max 2x (0.75 to 4 mm²) solid or stranded conductors. Type 1 coordination allows a 35 A fuse. ## Environmental limits Side-by-side mounting is permitted with 6 mm spacing at the side.","metaTitle":"Siemens 3RT1015-1HB42 SIRIUS Power Contactor, 24 VDC Coil, S","metaDescription":"Siemens SIRIUS 3RT1015-1HB42 power contactor, size S00, 24 VDC coil, 10 A rated at 24 V. Active production. Screw terminals, DIN rail mount. Sourced to order.","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":"0.7","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":"1.25","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","Closing power of magnet coil at DC":"2.3 W","Holding power of magnet coil at DC":"2.3 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":"$229.76","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=507490&mlfb=3RT1015-1HB42","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1015-1HB42/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional alternative to 3RT1015-1HB42?","answer":"The 3RT1015-1BB42 is the same S00 frame size and contactor family but with a 24 V AC coil instead of DC. The DC coil version (1HB42) gives a harder pull-in and holds without AC hum, preferred for PLC-driven panels where the 24 VDC supply is already present. The AC coil sibling draws a higher inrush and requires a separate transformer if the panel runs on DC control voltage. Panel footprint and terminal layout are identical, so no rewiring is needed for the main power circuit — only the coil supply changes."},{"question":"What is the depth of this contactor?","answer":"The depth is 72 mm."},{"question":"What conductor sizes does the main terminal accept?","answer":"The screw terminals accept 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or max 2x (0.75 to 4 mm²) solid or stranded copper. AWG equivalents are 2x (20 to 16), 2x (18 to 14), and 1x 12."},{"question":"Will 3RT1015-1HB42 drop into a panel specified for 3RT1015-1BB42?","answer":"Yes, the mounting footprint (45 mm width, 57.5 mm height, 72 mm depth) and screw/snap-on DIN rail attachment are identical between the DC and AC coil variants. The main power terminals and auxiliary contact positions are the same. The only difference is the coil supply: the 1HB42 requires 24 VDC, while the 1BB42 requires 24 VAC. If the panel already has a 24 VDC bus, this is a direct swap."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1015-1HB42","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/3RT1015-1HB42 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}}