{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA2415-8XF31-1BB4","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA2415-8XF31-1BB4","canonicalUrl":"https://aoctrl.com/siemens/3RA2415-8XF31-1BB4","factsUrl":"https://aoctrl.com/api/mcp/products/3RA2415-8XF31-1BB4","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RA2415-8XF31-1BB4 star-delta (wye-delta) contactor assembly, Size S00, 5.5 kW at 400 V AC-3, 24 VDC coil, screw terminals, 145 mm depth.","salesMarkdown":"## Star-delta contactor assembly for controlled motor starting The SIRIUS 3RA2415-8XF31-1BB4 is a factory-assembled star-delta (wye-delta) starter kit containing three 3RT2015-1BB41 contactors and the interlocking RS assembly kit 3RA2913-2BB1. It reduces inrush current during motor start by connecting the windings in star, then switching to delta for full-load running. The 24 VDC coil (screw-type terminals) matches standard control voltage rails in industrial panels. ## Mechanical endurance and switching constraints The assembly withstands shock of 10.5g for 5 ms and 6.6g for 10 ms on both AC and DC supplies — relevant for installations on vibrating machinery or conveyors. ## Wiring and terminal capacity for the BOM freeze Main current circuit and auxiliary/control circuit terminals are screw-type. AWG equivalents: 2x (20 to 16) and 2x (18 to 14). No integrated auxiliary switch or bus communication module is fitted — these are external add-ons if needed. The recommended upstream fuse for type 2 coordination is gG NH 3NA, DIAZED 5SB, or NEOZED 5SE rated at 20 A. ## Production status and sourcing posture Substance prohibition date per RoHS/REACH compliance is noted as 10/01/2009, indicating the design meets EU substance restrictions effective from that date.","metaTitle":"Siemens 3RA2415-8XF31-1BB4 SIRIUS Star-Delta Starter","metaDescription":"Siemens SIRIUS 3RA2415-8XF31-1BB4 star-delta contactor assembly, 5.5 kW at 400 V AC-3, Size S00, 24 VDC coil. Active production, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Motor Starters"],"specifications":{"Depth":"145 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), 2x 4 mm²","Width":"135 mm","at AC":"10,5g / 5 ms, 6,6g / 10 ms","at DC":"10,5g / 5 ms, 6,6g / 10 ms","title":"3RA2415-8XF31-1BB4","Height":"68 mm","Upwards":"6 mm","Forwards":"6 mm","Backwards":"0 mm","Downwards":"6 mm","At The Side":"6 mm","description":"Contactor assembly for star-delta (wye-delta) start AC-3, 5.5 kW/400 V, 24 V DC 3-pole, Size S00 screw terminals electrical and mechanical interlock 3 NO integrated","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Screw-type terminals","at AC-3 maximum":"1 000 1/h","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Fastening Method":"screw and snap-on mounting onto 35 mm standard mounting rail","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)","at DC rated value":"24 V","Product Brand Name":"SIRIUS","Product Designation":"Contactor assembly for star-delta (wye-delta) start","Of Contactor Typical":"10 000 000","at 400 V rated value":"5.5 kW","at 500 V rated value":"7.2 kW","at 690 V rated value":"9.2 kW","Instantaneous Contact":"3","For Main Current Circuit":"screw-type terminals","1 Of The Supplied Contactor":"3RT2015-1BB41","2 Of The Supplied Contactor":"3RT2015-1BB41","3 Of The Supplied Contactor":"3RT2015-1BB41","at AC-3 rated value maximum":"690 V","Substance Prohibitance (Date)":"10/01/2009","at AWG cables for main contacts":"2x (20 ... 16), 2x (18 ... 14)","of the supplied RS assembly kit":"3RA2913-2BB1","For Auxiliary And Control Circuit":"screw-type terminals","Product Extension Auxiliary Switch":"No","Product Function Bus Communication":"No","With Type Of Assignment 2 Required":"gG NH 3NA, DIAZED 5SB, NEOZED 5SE: 20 A","closing power of magnet coil at DC":"10 W","holding power of magnet coil at DC":"10 W","At Contactor For Auxiliary Contacts":"Screw-type terminals","With Type Of Coordination 1 Required":"gG NH 3NA, DIAZED 5SB, NEOZED 5SE: 35 A","at AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14)","number of NC contacts for main contacts":"0","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 error per 100 million operating cycles","with low demand rate according to SN 31920":"40 %","protocol is supported AS-Interface protocol":"No","with high demand rate according to SN 31920":"75 %","Type Of Voltage Of The Control Supply Voltage":"DC","contact rating of auxiliary contacts according to UL":"A600 / Q600","Of The Supplied Function Module For Wye-Delta Circuits":"3RA2816-0EW20","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","product function control circuit interface with IO link":"No","Of The Contactor With Added Auxiliary Switch Block Typical":"10 000 000","For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gG: 10 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/24e69db4269c011d0ea98e9c364befa9.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=334489&mlfb=3RA2415-8XF31-1BB4"},"ai":{"faq":[{"question":"What is the 3RA2415-8XF31-1BB4 used for?","answer":"It is a Siemens SIRIUS star-delta (wye-delta) contactor assembly for controlled starting of three-phase induction motors, reducing inrush current."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA2415-8XF31-1BB4","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/3RA2415-8XF31-1BB4 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}