{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2015-1KB41","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2015-1KB41","canonicalUrl":"https://aoctrl.com/siemens/3RT2015-1KB41","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2015-1KB41","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS coupling contactor, 3RT2015-1KB41, S00 frame size, 24 VDC coil, screw-type terminals, 45 mm width, rated 10 A at 24 VDC and 3 A at 400 VAC.","salesMarkdown":"## SIRIUS 3RT2015-1KB41 — Coupling Contactor, S00 Frame, 24 VDC The 24 VDC coil is rated for continuous duty, with a pickup dropout ratio around 0.7 of rated voltage — meaning it holds in reliably down to roughly 16.8 V and drops out cleanly below that, which matters when sizing a 24 VDC power supply shared with PLC outputs or sensors. Main contact ratings: 10 A at 24 VDC, 3 A at 400 VAC. The DC switching capacity drops significantly with voltage — 2 A at 48 V, 0.3 A at 220 V — so verify the load curve against your circuit before committing the BOM line. AC-1 resistive switching goes up to 1,000 operations per hour; AC-3 motor duty is rated at 750 ops/h. Arcing time runs 10–15 ms, which is typical for this contactor class and means the arc extinguishes fast enough for most relay-coil and small-motor loads without external suppression. ## Panel Integration & Wiring The S00 frame keeps the contactor compact at 58 mm tall and 73 mm deep, leaving room alongside terminal blocks or a PLC rack. Clearances: 10 mm upwards and forwards, 6 mm at the sides, 10 mm downwards — enough for standard wiring ducts without crowding. The -25 °C lower limit is fine for most indoor panel environments but check if your application sees freezing conditions in an unheated enclosure — the contactor will start and hold, but the coil inrush at low temperature draws higher current, so verify the 24 VDC supply can deliver the peak.","metaTitle":"Siemens 3RT2015-1KB41 SIRIUS Contactor, 24 VDC Coil, S00 Fra","metaDescription":"Siemens SIRIUS 3RT2015-1KB41 coupling contactor, 24 VDC coil, S00 frame, 45 mm wide, screw terminals. Rated 10 A at 24 VDC, 3 A at 400 VAC. Current production. Available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"73 mm","Solid":"0.5 ... 4 mm²","Width":"45 mm","at DC":"7 ... 20 ms","Height":"58 mm","Upwards":"10 mm","Forwards":"10 mm","Stranded":"0.5 ... 4 mm²","Downwards":"10 mm","Arcing Time":"10 ... 15 ms","At The Side":"6 mm","Rated Value":"24 V","Initial Value":"0.7","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Screw-type terminals","at AC-1 maximum":"1 000 1/h","at AC-2 maximum":"750 1/h","at AC-3 maximum":"750 1/h","at AC-4 maximum":"250 1/h","lifecycle_stage":"current","Auxiliary Switch":"No","During Operation":"-25 ... +60 °C","Fastening Method":"screw and snap-on mounting onto 35 mm DIN rail according to DIN EN 60715","Full-Scale Value":"1.25","at AC-3e maximum":"750 1/h","For Main Contacts":"20 ... 12","Mounting Position":"+/-180° rotation possible on vertical mounting surface; can be tilted forward and backward by +/- 22.5° on vertical mounting surface","Size Of Contactor":"S00","Solid Or Stranded":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), 2x 4 mm²","Product Brand Name":"SIRIUS","Product Designation":"Coupling 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":"0.75 hp","at 400 V rated value":"3 A","at 440 V rated value":"0.14 A","at 480 V rated value":"4.8 A","at 500 V rated value":"2 A","at 600 V rated value":"6.1 A","at 690 V rated value":"1 A","Side-By-Side Mounting":"Yes","For Auxiliary Contacts":"20 ... 12","For Main Current Circuit":"screw-type terminals","at 110/120 V rated value":"0.25 hp","at 200/208 V rated value":"1.5 hp","at 220/230 V rated value":"2 hp","at 460/480 V rated value":"3 hp","at 575/600 V rated value":"5 hp","Relative Humidity Minimum":"10 %","Of Main Circuit Rated Value":"6 kV","at AC-3 rated value maximum":"690 V","at AC in hot operating state":"0.6 W","at AC-3e rated value maximum":"690 V","at AC-4 at 400 V rated value":"6.5 A","safety-related switching OFF":"Yes","Substance Prohibitance (Date)":"10/01/2009","Design Of The Surge Suppressor":"suppressor diode","Of Auxiliary Circuit Rated Value":"6 kV","at AC-5a up to 690 V rated value":"15.8 A","at AC-5b up to 400 V rated value":"5.8 A","For Auxiliary And Control Circuit":"screw-type terminals","Function Module For 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":"2.8 W","closing power of magnet coil at DC":"2.8 W","holding power of magnet coil at DC":"2.8 W","At Contactor For Auxiliary Contacts":"Screw-type terminals","With Type Of Coordination 1 Required":"gG: 35A (690V,100kA), aM: 20A (690V,100kA), BS88: 35A (415V,80kA)","operational current at AC-12 maximum":"10 A","at AC in hot operating state per pole":"0.2 W","for AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14), 2x 12","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 ... 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)","mirror contact according to IEC 60947-4-1":"No","with low demand rate according to SN 31920":"40 %","with high demand rate according to SN 31920":"73 %","Type Of Voltage Of The Control Supply Voltage":"DC","Limited To 1 S Switching At Zero Current Maximum":"120 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 5 S Switching At Zero Current Maximum":"86 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 10 S Switching At Zero Current Maximum":"67 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 30 S Switching At Zero Current Maximum":"52 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 60 S Switching At Zero Current Maximum":"43 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 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)","minimum cross-section in main circuit at maximum AC-1 rated value":"2.5 mm²","number of NO contacts for auxiliary contacts instantaneous contact":"1"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/f6b54932f6df345ee835f6939faf7152.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=246916&mlfb=3RT2015-1KB41","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT2015-1KB41/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional alternative to 3RT2015-1KB41?","answer":"The 3RT2015-2HB41 is a direct peer in the same S00 frame, also a 24 VDC coil coupling contactor. The main difference is the terminal type: the -1KB41 uses screw-type terminals, while the -2HB41 uses spring-cage terminals. If your panel wiring practice prefers spring-cage, the -2HB41 drops into the same DIN rail footprint without rewiring the mounting or coil supply — just the conductor termination changes."},{"question":"Will 3RT2015-1KB41 fit a panel designed for 3RT2015-2HB41?","answer":"Yes — same S00 frame, same 45 mm width, same 58 mm height, same 73 mm depth, same DIN rail mounting. The only difference is screw terminals vs spring-cage. No rewiring of the panel layout or busbar is needed."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2015-1KB41","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/3RT2015-1KB41 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}}