{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1017-1BA42","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1017-1BA42","canonicalUrl":"https://aoctrl.com/siemens/3RT1017-1BA42","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1017-1BA42","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, Size S00, 3RT1017-1BA42, 24 VDC coil, 5.5 kW at 400 V AC-3, screw terminals, 45 mm width, IP20.","salesMarkdown":"The Siemens SIRIUS 3RT1017-1BA42 is a Size S00 power contactor rated for motor switching at 5.5 kW in AC-3 duty at 400 V, with a 24 VDC coil drawing 3.3 W for both closing and holding. The AC-3 rating of 5.5 kW at 400 V governs the motor load this contactor can switch under starting conditions — that's the figure to match against your motor nameplate, not the AC-1 resistive rating. For reversing or inching duty (AC-4), the contactor is rated at 8.5 A at 400 V, which is lower than the AC-3 current, so factor that in for jogging or plugging applications. The 24 VDC coil holds at 3.3 W, which is consistent across closing and holding, meaning no inrush spike to size your control transformer around. The screw terminals accept solid or stranded conductors: 2x 0.5–1.5 mm², 2x 0.75–2.5 mm², or max 2x 0.75–4 mm² per clamp. For AWG, that's 2x 20–16, 2x 18–14, or 1x 12. The IP20 finger-safe protection on the front and terminals means the contactor can be mounted in a panel without additional terminal shrouds for basic touch protection. ## Mounting and coordination For Type 1 coordination, use a gL/gG fuse rated 35 A; for Type 2 coordination, use 20 A.","metaTitle":"Siemens SIRIUS 3RT1017-1BA42 Power Contactor, Size S00, 24 V","metaDescription":"Siemens SIRIUS 3RT1017-1BA42 power contactor, Size S00, 24 VDC coil, 5.5 kW AC-3 at 400 V, 45 mm wide, IP20, current production. Sourced to order against RFQ.","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":"12 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":"1.1","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":"5.5 kW","at 690 V rated value":"5.5 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":"5.5 kW","at AC-4 at 400 V rated value":"8.5 A","Closing power of magnet coil at DC":"3.3 W","Holding power of magnet coil at DC":"3.3 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":"22 A","Type of voltage of the control supply voltage":"DC","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","Of The Contactor With Added Electronics-Compatible Auxiliary Switch Block Typical":"5 000 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=409988&mlfb=3RT1017-1BA42","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1017-1BA42/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source to the 3RT1017-1BA42?","answer":"The 3RT1017-1AP01 is a peer variant in the same Size S00 frame. The key difference is the coil voltage: the -1BA42 uses a 24 VDC coil, while the -1AP01 uses a different coil voltage. Panel footprint and terminal layout are identical, so no rewiring is needed for a coil-voltage swap."},{"question":"What is the depth of the 3RT1017-1BA42?","answer":"The depth is 72 mm, which fits standard 80 mm deep enclosures with clearance for wiring."},{"question":"What wire sizes does the 3RT1017-1BA42 accept?","answer":"The screw terminals accept 2x 0.5–1.5 mm², 2x 0.75–2.5 mm², or max 2x 0.75–4 mm² solid or stranded. In AWG: 2x 20–16, 2x 18–14, or 1x 12."},{"question":"Will the 3RT1017-1BA42 drop into a panel specified around the 3RT1017-1AP01 without rewiring?","answer":"Yes — both are Size S00 with the same 45 mm width, DIN rail mounting, and screw terminal layout. The only difference is the coil voltage; the -1BA42 runs on 24 VDC, so the control circuit must supply 24 VDC instead of whatever the -1AP01 requires."},{"question":"What compliance documentation is available for the 3RT1017-1BA42?","answer":"The contactor carries IP20 protection on front and terminals, pollution degree 3 rating, and is designed for industrial environments. It is a Siemens SIRIUS product with standard CE marking for the European market. Specific RoHS/REACH/UL declarations are available from the manufacturer upon request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1017-1BA42","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/3RT1017-1BA42 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}}