{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1017-1BB42","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1017-1BB42","canonicalUrl":"https://aoctrl.com/siemens/3RT1017-1BB42","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1017-1BB42","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT1017-1BB42 power contactor, size S00, 24 VDC coil, screw-type terminals, snap-on DIN rail mounting, IP20.","salesMarkdown":"The coil draws 3.3 W on closing and 3.3 W holding — a fixed-gap magnetic circuit that stays at full power once pulled in, so no economizer circuit is needed. The pickup threshold is 0.85 x rated voltage (about 20.4 VDC), and dropout is 1.1 x rated voltage (about 26.4 VDC) — meaning the contactor pulls in reliably at a sag and drops out cleanly when the control supply rises above nominal. That 1.1 dropout is unusual: most contactors drop out below nominal. This one stays held until the voltage exceeds 26.4 V, so a floating DC supply that drifts high won't cause chatter. The motor ratings define the real-world load envelope. At AC-3 duty (squirrel-cage motors, starting and disconnecting under load) it delivers 5.5 kW at 400 V and 5.5 kW at 500 V and 690 V — so it handles a standard 7.5 hp motor at 400 V three-phase, and the same power at higher voltages because the current drops. At AC-4 (plugging, inching) it is rated 8.5 A at 400 V, which is about 4 kW — roughly half the AC-3 power, reflecting the higher thermal stress of reversing duty. The auxiliary contact ratings cover DC switching: 10 A at 24 V, 2 A at 60 V, 1 A at 110 V, 0.3 A at 220 V, and 6 A at 230 V AC. These DC ratings are the ones that matter for PLC interposing or pilot-duty circuits — the 10 A at 24 V is generous for a size S00 auxiliary contact. Short-circuit coordination is specified: with type 2 coordination (limited damage, contactor remains usable) use a 20 A gL/gG fuse; with type 1 coordination (contactor may need replacement) use a 35 A gL/gG fuse. Side-by-side mounting is permitted, so multiple contactors can be ganged without spacing. The 45 mm width (3 TE on a DIN rail) and 57.5 mm height fit standard panel layouts. Depth is 72 mm, which leaves clearance for wiring ducts or busbars behind the rail. Wire range: solid or stranded, 2x (0.5 to 1.5 mm²) and 2x (0.75 to 2.5 mm²) per terminal, max 2x (0.75 to 4 mm²). AWG equivalents are 2x (20 to 16) and 2x (18 to 14), with a single 12 AWG allowed. The substance prohibition date of 2006-07-01 aligns with RoHS compliance — the part is RoHS-compliant as manufactured.","metaTitle":"Siemens 3RT1017-1BB42 SIRIUS Power Contactor, 24 VDC, Size S","metaDescription":"Siemens SIRIUS 3RT1017-1BB42 power contactor, 24 VDC coil, size S00, 5.5 kW at 400 V AC-3. Screw terminals, snap-on DIN rail. Current lifecycle. Quoted 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","Rated Value":"24 V","On The Front":"IP20","Initial Value":"0.85","Of The Terminal":"IP20","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Fastening Method":"screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022","Full-Scale Value":"1.1","Size Of Contactor":"S00","Solid Or Stranded":"2x (0,5 ... 1,5 mm²), 2x (0,75 ... 2,5 mm²), max. 2x (0,75 ... 4 mm²)","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","Side-By-Side Mounting":"Yes","For Main Current Circuit":"screw-type terminals","at AC-2 at 400 V rated value":"5.5 kW","at AC-4 at 400 V rated value":"8.5 A","Substance Prohibitance (Date)":"01.07.2006 00:00:00","at AWG cables for main contacts":"2x (20 ... 16), 2x (18 ... 14), 1x 12","For Auxiliary And Control Circuit":"screw-type terminals","With Type Of Assignment 2 Required":"fuse gL/gG: 20 A","closing power of magnet coil at DC":"3.3 W","holding power of magnet coil at DC":"3.3 W","reference code acc. to IEC 81346-2":"Q","With Type Of Coordination 1 Required":"fuse gL/gG: 35 A","at AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14), 1x 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)","Type Of Voltage Of The Control Supply Voltage":"DC","Required Spacing For Grounded Parts At The Side":"6 mm","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","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","Of The Contactor With Added Electronically Optimized 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=375747&mlfb=3RT1017-1BB42","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1017-1BB42/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source to 3RT1017-1BB42?","answer":"The 3RT1016-1BB42 is the next-lower size in the same SIRIUS family with the same 24 VDC coil and screw terminals. The 3RT1017-1BB42 is rated 5.5 kW at 400 V AC-3; the 3RT1016-1BB42 is rated lower, so check your motor load before substituting. Panel footprint and terminal layout are identical, so it drops into the same DIN-rail position without rewiring."},{"question":"Will 3RT1017-1BB42 drop into a panel specified around 3RT1016-1BB42?","answer":"Yes — same size S00 footprint, same 45 mm width, same snap-on DIN rail mounting, same screw terminal layout. The only difference is the contact rating; the 3RT1017-1BB42 carries a higher motor load (5.5 kW vs the 3RT1016's lower rating at 400 V AC-3). No rewiring needed if the panel was wired for the 3RT1016."},{"question":"What compliance documentation does Siemens provide for 3RT1017-1BB42?","answer":"The part carries a RoHS substance prohibition date of 2006-07-01, confirming RoHS compliance. It is also rated pollution degree 3 per IEC 60947, and the reference code per IEC 81346-2 is Q. Full declarations and certificates are available from Siemens upon request through the supply channel."},{"question":"Where can I buy 3RT1017-1BB42 and how is it quoted?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock count or price is published here."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1017-1BB42","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/3RT1017-1BB42 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}}