{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2017-2KF42-1LA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2017-2KF42-1LA0","canonicalUrl":"https://aoctrl.com/siemens/3RT2017-2KF42-1LA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2017-2KF42-1LA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT2017-2KF42-1LA0 contactor, size S00, 110 V DC coil, spring-type terminals, screw and snap-on mounting on 35 mm DIN rail per EN 60715, auxiliary switch included.","salesMarkdown":"## 110 V DC coil, spring terminals — what that means for your control circuit The 3RT2017-2KF42-1LA0 carries a 110 V DC coil — that DC rating matters because the hold-in current is continuous, not zero-crossing like AC. If your control transformer or DC supply is already 110 V nominal, this drops straight in. If you're swapping from an AC coil contactor, the suppression network on the DC side is different: a freewheeling diode across the coil, not an RC snubber. The coil termination uses spring-type terminals (push-in), not screw clamps. Auxiliary contacts are built in — no add-on block needed for basic status feedback. That 11 A at 480/600 V is the AC-15 rating for solenoid loads; the DC values follow the standard derating for inductive DC break. ## DIN rail footprint and clearance — panel layout constraints Size S00 means 45 mm wide, 70 mm high, 121 mm deep. The snap-on feature means no tools for initial placement — useful when populating a rail with multiple contactors. In a dense panel, that 6 mm side gap is the binding constraint — adjacent contactors or terminal blocks need that minimum air gap for arc flash and heat dissipation. Mounting position is standing on a horizontal surface. ## Mechanical life and switching frequency — how hard can you cycle it? That's a high-cycle contactor — suitable for frequent starts in conveyor, packaging, or HVAC damper applications where the contactor cycles many times per hour. At AC-4 maximum (plugging/reversing duty), the switching rate is 250 operations per hour. That's the duty limit for heavy inrush loads like motor reversing — above that, the contact wear accelerates and the thermal capacity of the arc chamber is exceeded. ## Sourcing and lifecycle — current production, quoted to order Sourced through independent distribution channels. No minimum order quantity beyond the manufacturer's standard pack; lead time varies with production batch.","metaTitle":"Siemens 3RT2017-2KF42-1LA0 SIRIUS Contactor, 110 V DC","metaDescription":"Siemens 3RT2017-2KF42-1LA0 SIRIUS contactor, size S00, 110 V DC coil, spring-type terminals. Rated 10 A at 24 V DC auxiliary. DIN rail mount.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"121 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), 2x 4 mm²","Width":"45 mm","at DC":"7 ... 20 ms","Height":"70 mm","Upwards":"10 mm","Forwards":"10 mm","Downwards":"10 mm","Arcing Time":"10 ... 15 ms","At The Side":"6 mm","Rated Value":"110 V","Initial Value":"0.7","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Spring-type terminals","Type Of Voltage":"DC","at AC-4 maximum":"250 1/h","lifecycle_stage":"current","Auxiliary Switch":"Yes","During Operation":"-40 ... +70 °C","Fastening Method":"screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 60715","Full-Scale Value":"1.25","For Main Contacts":"20 ... 12","Mounting Position":"standing, on horizontal mounting surface","Size Of Contactor":"S00","Solid Or Stranded":"2x (0,5 ... 4 mm²)","Product Brand Name":"SIRIUS","Product Designation":"Contactor","at 24 V rated value":"10 A","at 48 V rated value":"2 A","at 60 V rated value":"2 A","Of Contactor Typical":"30 000 000","at 110 V rated value":"1 A","at 125 V rated value":"0.9 A","at 220 V rated value":"0.3 A","at 230 V rated value":"2 hp","at 400 V rated value":"3 A","at 480 V rated value":"11 A","at 500 V rated value":"2 A","at 600 V rated value":"11 A","at 690 V rated value":"1 A","Design Of The Product":"With extended operating range","Side-By-Side Mounting":"Yes","For Auxiliary Contacts":"20 ... 12","For Main Current Circuit":"spring-loaded terminals","at 110/120 V rated value":"0.5 hp","at 200/208 V rated value":"3 hp","at 220/230 V rated value":"3 hp","at 460/480 V rated value":"7.5 hp","at 575/600 V rated value":"10 hp","at AC-2 at AC-3e maximum":"750 1/h","Relative Humidity Minimum":"10 %","Of Main Circuit Rated Value":"6 kV","at AC-3 rated value maximum":"690 V","at maximum AC-1 rated value":"4 mm²","at AC in hot operating state":"3.6 W","at AC-2 at 400 V rated value":"5.5 kW","at AC-3e rated value maximum":"690 V","at AC-4 at 400 V rated value":"8.5 A","Substance Prohibitance (Date)":"10/01/2009","Design Of The Surge Suppressor":"suppressor diode","at AWG cables for main contacts":"2x (20 ... 12)","Of Auxiliary Circuit Rated Value":"6 kV","For Auxiliary And Control Circuit":"spring-loaded terminals","Function Module For Communication":"No","Product Function Bus Communication":"No","With Type Of Assignment 2 Required":"gG: 20A (690V,100kA), aM: 16A (690V, 100kA), BS88: 20A (415V, 80kA)","Without Load Current Share Typical":"4 W","closing power of magnet coil at DC":"13 W","holding power of magnet coil at DC":"4 W","At Contactor For Auxiliary Contacts":"Spring-type terminals","With Type Of Coordination 1 Required":"gG: 50A (690V,100kA), aM: 20A (690V,100kA), BS88: 35A (415V,80kA)","at AWG cables for auxiliary contacts":"2x (20 ... 12)","operational current at AC-12 maximum":"10 A","at AC in hot operating state per pole":"1.2 W","number of NO contacts for main contacts":"3","reference code according to IEC 81346-2":"Q","Finely Stranded With Core End Processing":"2x (0.5 ... 2.5 mm²)","Number Of Poles For Main Current Circuit":"3","Product Function Short Circuit Protection":"No","mirror contact according to IEC 60947-4-1":"Yes","with low demand rate according to SN 31920":"40 %","Finely Stranded Without Core End Processing":"2x (0.5 ... 2.5 mm²)","with high demand rate according to SN 31920":"73 %","number of NC contacts for auxiliary contacts":"1","Type Of Voltage Of The Control Supply Voltage":"DC","Limited To 1 S Switching At Zero Current Maximum":"200 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 5 S Switching At Zero Current Maximum":"123 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 10 S Switching At Zero Current Maximum":"96 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 30 S Switching At Zero Current Maximum":"74 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 60 S Switching At Zero Current Maximum":"61 A; Use minimum cross-section acc. to AC-1 rated value","contact rating of auxiliary contacts according to UL":"A600 / Q600","Of Main Circuit With Degree Of Pollution 3 Rated Value":"690 V","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Of The Contactor With Added Auxiliary Switch Block Typical":"10 000 000","Of Auxiliary Circuit With Degree Of Pollution 3 Rated Value":"690 V","For Short-Circuit Protection Of The Auxiliary Switch Required":"gG: 10 A (500 V, 1 kA)","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":"https://cdn.aoctrl.com/b29221a607859b26fdc95b3900d8c38b.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=185775&mlfb=3RT2017-2KF42-1LA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT2017-2KF42-1LA0/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2017-2KF42-1LA0","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/3RT2017-2KF42-1LA0 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}}