{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1017-2QB42-0LA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1017-2QB42-0LA0","canonicalUrl":"https://aoctrl.com/siemens/3RT1017-2QB42-0LA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1017-2QB42-0LA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, size S00, 3RT1017-2QB42-0LA0, 24 V DC coil with integrated diode surge suppression, spring-loaded terminals.","salesMarkdown":"It integrates diode assemblies for surge suppression right in the coil circuit, so you don't need an external flyback diode across the coil terminals — saves a component and a wiring step on the panel. Spring-loaded terminals on the main current circuit accept 2x (0.25 to 2.5 mm²) solid or stranded conductors, or 2x (24 to 14 AWG). That's a standard size for control wiring; no special ferrules or bootlace crimps required beyond what you'd normally use for a 24 VDC control loop. The 45 mm width and 60 mm height fit the S00 footprint — same envelope as the base SIRIUS contactor range, so it slots into an existing panel layout without re-spacing. Rated operational current for AC-12 (resistive) duty is 10 A at 24 V. That's the ceiling for general-purpose switching — resistive loads like heaters or pilot lights. For motor duty, the AC-3 rating at 400 V is 5.5 kW, which is the figure that governs most induction-motor applications in a 400 V three-phase panel. Coil holds at 3.3 W DC, both closing and holding. No inrush spike to worry about on the 24 VDC supply — the diode suppression keeps the coil circuit clean and prevents voltage transients from coupling back into the control bus. Mechanical endurance is 30 million operating cycles typical. That's the contactor mechanism itself; electrical endurance under load will be lower and depends on the switching category. For a 24 VDC control circuit switching resistive loads, the mechanical figure is the relevant ceiling. On a crowded DIN rail, you can pack S00 contactors tight without derating, as long as ambient stays within the -40 to +70 °C operating range. The IP20 front protection keeps fingers and tools out of the terminal area; the contactor itself isn't sealed for washdown, so keep it inside the enclosure. Above that, air density drops and dielectric strength falls off — the contactor can still function, but you'd need to reduce the rated current per the manufacturer's altitude correction factors.","metaTitle":"Siemens 3RT1017-2QB42-0LA0 SIRIUS Contactor, S00, 24 VDC","metaDescription":"Siemens SIRIUS 3RT1017-2QB42-0LA0 power contactor, size S00, 24 VDC coil with diode suppression, spring terminals. Current production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"123 mm","Solid":"2x (0.25 ... 2.5 mm²)","Width":"45 mm","Height":"60 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":"-40 ... +70 °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":"spring-loaded terminals","Single Or Multi-Stranded":"2x (0,25 ... 2,5 mm²)","at AC-2 at 400 V rated value":"5.5 kW","at AC-4 at 400 V rated value":"8.5 A","Design of the surge suppressor":"with diode assemblies","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 (24 ... 14)","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 (0.25 ... 1.5 mm²)","Number of poles for main current circuit":"3","at AWG conductors for auxiliary contacts":"2x (24 ... 14)","Contact reliability of auxiliary contacts":"1 faulty switching per 100 million (17 V, 1 mA)","For Auxiliary And Control Current Circuit":"spring-loaded terminals","at ambient temperature 40 °C rated value":"22 A","Finely Stranded Without Core End Processing":"2x (0.25 ... 2.5 mm²)","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=361835&mlfb=3RT1017-2QB42-0LA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1017-2QB42-0LA0/alternatives.json"},"ai":{"faq":[{"question":"What is the depth of this contactor?","answer":"The depth is 123 mm. That's the dimension from the DIN-rail mounting surface to the front of the terminals — important for enclosure depth clearance."},{"question":"Does this contactor include a surge suppressor?","answer":"Yes, it has integrated diode assemblies for surge suppression across the coil. No external flyback diode needed."},{"question":"What is the closest functional alternative to this part?","answer":"The 3RT1016-2AP02 is a size S00 contactor in the same SIRIUS family, but it uses a 24 V AC/DC coil with a different surge suppression design (varistor instead of diode) and screw terminals instead of spring-loaded. The mechanical footprint is identical, so it drops into the same DIN-rail position, but the coil circuit and wiring method differ. Verify coil compatibility and terminal preference before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1017-2QB42-0LA0","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/3RT1017-2QB42-0LA0 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}}