{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA2315-8XB30-1BB4","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA2315-8XB30-1BB4","canonicalUrl":"https://aoctrl.com/siemens/3RA2315-8XB30-1BB4","factsUrl":"https://aoctrl.com/api/mcp/products/3RA2315-8XB30-1BB4","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS reversing contactor assembly, size S00, 3 kW at 400 V AC-3, 24 V DC coil, screw-type terminals, screw and snap-on mounting onto 35 mm DIN rail.","salesMarkdown":"The Siemens SIRIUS 3RA2315-8XB30-1BB4 is a factory-assembled reversing contactor assembly, size S00, built from two 3RT2015-1BB42 contactors with a mechanical interlock. It's meant for one thing: switching a three-phase motor forward and reverse from a single DIN-rail footprint, no field assembly of interlocks required. Rated 3 kW at 400 V AC-3, which is the standard duty for squirrel-cage induction motors — that's the figure you match to the motor nameplate. At 480 V it's rated 4.8 A, at 600 V it's 6.1 A, so it tracks the current down as voltage goes up. AC-3 switching frequency maxes at 750 operations per hour, and the mechanical life of the contactor is 10 million cycles. That's a lot of reversals before the contacts wear out — useful on a conveyor sort station or a traverse drive that cycles all shift. That helps when you're shoehorning it into a crowded panel and the DIN rail isn't perfectly level. Dimensions are 90 mm wide, 68 mm high, 73 mm deep — that's a compact S00 footprint. Clearance around the unit: 6 mm upwards, forwards, downwards, and to the side; zero clearance needed backwards (against the mounting surface). That means you can butt it against the back panel or another rail without leaving an air gap. Terminal capacity on the main circuit: solid or stranded wire 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or 2x 4 mm². That covers most motor leads in this size class — no need to pigtail down to a smaller wire just to land it. ## Shock and vibe Rated for 10.5 g at 5 ms and 6.6 g at 10 ms on both AC and DC. That's a solid spec for industrial environments — think compressors, crushers, or anything with a hard start that shakes the panel.","metaTitle":"Siemens 3RA2315-8XB30-1BB4 SIRIUS Reversing Contactor, 3 kW","metaDescription":"Siemens SIRIUS reversing contactor assembly 3RA2315-8XB30-1BB4, 3 kW at 400 V AC-3, 24 V DC coil, screw terminals, snap-on DIN rail. Current lifecycle stage. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Motor Starters"],"specifications":{"Depth":"73 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), 2x 4 mm²","Width":"90 mm","at AC":"10,5g / 5 ms, 6,6g / 10 ms","at DC":"10,5g / 5 ms, 6,6g / 10 ms","title":"3RA2315-8XB30-1BB4","Height":"68 mm","Upwards":"6 mm","Forwards":"6 mm","Backwards":"0 mm","Downwards":"6 mm","At The Side":"6 mm","description":"reversing contactor assembly, AC-3e/AC-3, 7 A, 3 kW / 400 V, 3-pole, 24 V DC, screw terminal, electrical and mechanical interlock","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Screw-type terminals","at AC-3 maximum":"750 1/h","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Fastening Method":"screw and snap-on mounting onto 35 mm DIN rail","at AC-3e maximum":"750 1/h","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":"Reversing contactor assembly","Of Contactor Typical":"10 000 000","at 400 V rated value":"3 kW","at 480 V rated value":"4.8 A","at 500 V rated value":"3 kW","at 600 V rated value":"6.1 A","at 690 V rated value":"4 kW","For Main Current Circuit":"screw-type terminals","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","1 Of The Supplied Contactor":"3RT2015-1BB42","2 Of The Supplied Contactor":"3RT2015-1BB42","at AC-3 rated value maximum":"690 V","at AC-3e rated value maximum":"690 V","at AC-4 at 400 V rated value":"3 kW","Substance Prohibitance (Date)":"10/01/2009","of the supplied RH assembly kit":"3RA2913-2AA1","For Auxiliary And Control Circuit":"screw-type terminals","Product Extension Auxiliary Switch":"Yes","Product Function Bus Communication":"Yes","With Type Of Assignment 2 Required":"gG NH 3NA, DIAZED 5SB, NEOZED 5SE: 20 A","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 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","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":"$58.42","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/2a9e1a93bbac0c30cb53690db878b392.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=383311&mlfb=3RA2315-8XB30-1BB4"},"ai":{"faq":[{"question":"What is the depth of 3RA2315-8XB30-1BB4?","answer":"The depth is 73 mm. Combined with a width of 90 mm and height of 68 mm, it fits a standard S00 contactor footprint on 35 mm DIN rail."},{"question":"What wire sizes can land on the main terminals?","answer":"The screw-type terminals accept 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or 2x 4 mm² solid or stranded copper. That covers most motor leads up to 3 kW without needing a ferrule or reducing pigtail."},{"question":"Where can I buy 3RA2315-8XB30-1BB4?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"Will 3RA2315-8XB30-1BB4 drop into a panel wired for 3RT6026-1BM40 without rewiring?","answer":"No — the 3RT6026 is a larger frame size (S2 or S3) with different dimensions and terminal spacing. The 3RA2315 is a size S00 assembly; it won't share the same DIN-rail footprint or lug centers. You'd need to re-terminate or adapt the bus bars."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA2315-8XB30-1BB4","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/3RA2315-8XB30-1BB4 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}}