{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2015-1JB42","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2015-1JB42","canonicalUrl":"https://aoctrl.com/siemens/3RT2015-1JB42","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2015-1JB42","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT2015-1JB42, coupling contactor, size S00, 24 V DC coil, screw-type terminals, 10 A rated operational current at 24 V DC, 45 mm width, DIN rail mount.","salesMarkdown":"## SIRIUS Coupling Contactor for 24 V DC Control Circuits ## Ratings and Operating Conditions The 24 V DC coil is the part's defining feature — it pulls in with a typical pickup time of 38 to 65 ms and an arcing time of 10 to 15 ms. The contactor is rated for switching frequencies up to 750 cycles per hour under AC-3 and AC-2 duty, and up to 1000 cycles per hour under AC-1 resistive loads. For DC switching, the rated operational current drops with voltage: 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 230 V. ## Mounting and Wiring Clearances The screw terminals accept solid or stranded conductors from 0.5 to 4 mm², and can handle two conductors per clamp in combinations like 2x 0.5-1.5 mm² or 2x 4 mm². The contactor has no built-in auxiliary switch — that's a separate add-on if needed.","metaTitle":"Siemens 3RT2015-1JB42 SIRIUS Contactor, 24 V DC Coil, 10 A,","metaDescription":"Siemens SIRIUS 3RT2015-1JB42 coupling contactor, size S00, 24 V DC coil, rated 10 A at 24 V. Screw terminals, DIN rail mount. 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":"38 ... 65 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":"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":"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 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":"$22.86","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/6045017862fd4d8f004a5019c4bb0927.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=184710&mlfb=3RT2015-1JB42","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT2015-1JB42/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source to the 3RT2015-1JB42?","answer":"The 3RT2015-1AT62 is a peer in the same S00 frame with a 24 V coil, but it uses an AC coil instead of DC. The 3RT2015-2HB41 and 3RT2015-2BF42 are also S00 peers but with different coil voltages or terminal types. For a direct DC coil drop-in, the 3RT2015-1JB42 is the specific variant — the AC-coil versions will not pull in reliably on a DC supply."},{"question":"What is the depth of the 3RT2015-1JB42?","answer":"The depth is 73 mm. Width is 45 mm, height is 58 mm."},{"question":"What wire sizes does the 3RT2015-1JB42 accept?","answer":"Solid or stranded conductors from 0.5 to 4 mm². It can also accept two conductors per clamp: 2x 0.5-1.5 mm², 2x 0.75-2.5 mm², or 2x 4 mm²."},{"question":"Will the 3RT2015-1JB42 drop into a panel specified for the 3RT2015-1AT62 without rewiring?","answer":"Mechanically yes — both are S00 size with the same 45 mm width and DIN rail mount. Electrically, no: the 1JB42 has a 24 V DC coil, while the 1AT62 has a 24 V AC coil. The wiring and power supply must match the coil type. If the panel is wired for AC, the DC coil will not work."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2015-1JB42","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/3RT2015-1JB42 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}}