{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2015-2QB42","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2015-2QB42","canonicalUrl":"https://aoctrl.com/siemens/3RT2015-2QB42","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2015-2QB42","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS coupling contactor, size S00, 24 VDC coil, spring-type terminals, 45 mm width, 70 mm height, 121 mm depth.","salesMarkdown":"It uses spring-type terminals for the magnet coil, which means no screw tightening — strip, insert, and the cage clamps the wire. The 24 V rated coil holds reliably, and the DC-13 breaking current at 24 V is 10 A, so it handles inductive DC loads like relay coils or solenoid valves without welded contacts. ## Electrical ratings and switching performance Rated control supply voltage is 24 VDC. For DC-13 duty (switching electromagnets), the contactor breaks 10 A at 24 V, 2 A at 48 V and 60 V, 1 A at 110 V, 0.9 A at 125 V, and 0.3 A at 220 V. At 400 V AC-3 motor duty, it switches 3 A. Maximum switching frequency depends on duty: 1,000 operations per hour at AC-1 (resistive), 750 at AC-2 and AC-3 (motor start/run), and 250 at AC-4 (plugging/inching). The main contacts are rated for 20 to 12 million operating cycles, and the typical mechanical service life is 30 million operations. ## Environmental and wiring Accepts solid or stranded conductors from 0.5 to 4 mm² (single wire) or 2x (0.5 to 4 mm²) for paralleled conductors.","metaTitle":"Siemens 3RT2015-2QB42 SIRIUS Coupling Contactor, 24 VDC, S00","metaDescription":"Siemens 3RT2015-2QB42 SIRIUS coupling contactor, size S00, 24 VDC coil, spring-type terminals. Current lifecycle status: active. Sourced to order via RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"121 mm","Solid":"0.5 ... 4 mm²","Width":"45 mm","at DC":"7 ... 20 ms","Height":"70 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":"Spring-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 ... 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":"spring-loaded 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":"with varistor","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":"spring-loaded 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":"Spring-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 ... 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 ... 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":"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 %","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 NC contacts for auxiliary contacts instantaneous contact":"1"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/3a27d85d8b4a768f63f714b36ef64994.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=392508&mlfb=3RT2015-2QB42","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT2015-2QB42/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional equivalent if I need a different coil voltage?","answer":"The 3RT2015-2BF42 uses a 24 VAC/DC coil but shares the same S00 frame, spring-type terminals, and DIN-rail mounting footprint. The choice between them depends entirely on whether your control circuit is AC or DC."},{"question":"What are the key dimensions for panel layout?","answer":"Width is 45 mm, height is 70 mm, and depth is 121 mm. Clearances required: 10 mm upwards, 10 mm forwards, 10 mm downwards, and 6 mm at the side."},{"question":"What wire sizes does it accept?","answer":"Solid or stranded conductors from 0.5 to 4 mm², and up to 2x (0.5 to 4 mm²) for paralleled conductors."},{"question":"Will it drop into a panel designed for the 3RT2015-2BF42?","answer":"Yes, mechanically and dimensionally identical — same S00 frame, same spring-type terminals, same 45 mm width, same DIN-rail mounting. The only difference is the coil rating: 24 VDC here versus 24 VAC/DC on the -2BF42. No rewiring needed if your control supply matches."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2015-2QB42","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/3RT2015-2QB42 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}}