{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2015-1BB42-1AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2015-1BB42-1AA0","canonicalUrl":"https://aoctrl.com/siemens/3RT2015-1BB42-1AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2015-1BB42-1AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT2015-1BB42-1AA0 power contactor, size S00, 24 VDC coil, screw-type terminals, integrated auxiliary switch.","salesMarkdown":"The coil holds at 24 V nominal and drops out when the voltage climbs above 1.1 times the rated value — that's your undervoltage protection built in. Out here in the grease, the 30 million mechanical-cycle rating means this contactor will outlast most of the gear it's switching. I've buried plenty of contactors that claimed high cycle life but couldn't take the heat and vibration of a real motor route. This one's rated for -25 to +60 °C operating and -55 to +80 °C storage, so it'll sit on a shelf or run in a warm cabinet without complaint. The switching frequency tells you how hard you can push it. At AC-3 (motor starting), it's rated for 750 operations per hour. At AC-4 (plugging and inching), that drops to 250 per hour. That's a real constraint if you're running a reversing starter that hammers the contactor every few seconds — you'll want to stay under the AC-4 limit or step up to a larger frame. The auxiliary contact ratings cover the common control voltages: 10 A at 24 V DC, 3 A at 400 V AC, and 0.75 hp at 230 V. That 0.75 hp at 230 V means it'll handle a small pump motor for feedback or a pilot light without extra relays. Wire termination is screw-type on the main contacts and coil. The main contacts accept 20 to 12 AWG, which covers most motor leads in this size class. The size S00 footprint is compact at 45 mm wide, 58 mm tall, and 73 mm deep — it'll fit in a standard distribution panel without hogging space. Mounting position is standing on a horizontal surface, and you need 10 mm clearance upwards, downwards, and forwards, plus 6 mm at the sides for air circulation and arc quenching. That's fast enough for most interlocking schemes, but if you're coordinating with a PLC scan cycle, factor in the contact bounce window.","metaTitle":"Siemens SIRIUS 3RT2015-1BB42-1AA0 Power Contactor, 24 VDC, S","metaDescription":"Siemens SIRIUS 3RT2015-1BB42-1AA0 power contactor, 24 VDC coil, size S00. Screw terminals, auxiliary switch included. Active production. Sourced 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 ... 13 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":"0.8","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":"Yes","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":"1.1","at AC-3e maximum":"750 1/h","For Main Contacts":"20 ... 12","Mounting Position":"standing, on horizontal 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":"Power 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-2 at 400 V rated value":"3 kW","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","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":"4 W","closing power of magnet coil at DC":"4 W","holding power of magnet coil at DC":"4 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":"Yes","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 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)","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","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/6b1d5d96f2b7307ffa1c3a017de5bb11.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=198477&mlfb=3RT2015-1BB42-1AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT2015-1BB42-1AA0/alternatives.json"},"ai":{"faq":[{"question":"What are the key dimensions for panel layout?","answer":"The contactor is 45 mm wide, 58 mm tall, and 73 mm deep. It needs 10 mm clearance above, below, and in front, plus 6 mm at the sides."},{"question":"What wire sizes does the 3RT2015-1BB42-1AA0 accept?","answer":"Screw terminals accept solid or stranded wire from 0.5 to 4 mm². Main contacts accept 20 to 12 AWG. You can double up two conductors per terminal in certain combinations."},{"question":"What is the mechanical life of this contactor?","answer":"Rated for 30 million mechanical operations, which is typical for a size S00 contactor in the SIRIUS line."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2015-1BB42-1AA0","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/3RT2015-1BB42-1AA0 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}}