{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA2318-8XB30-1AK6","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA2318-8XB30-1AK6","canonicalUrl":"https://aoctrl.com/siemens/3RA2318-8XB30-1AK6","factsUrl":"https://aoctrl.com/api/mcp/products/3RA2318-8XB30-1AK6","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS reversing contactor assembly, size S00, 3RA2318-8XB30-1AK6, 7.5 kW at 400 V AC-3, screw-type terminals, snap-on 35 mm DIN rail.","salesMarkdown":"The Siemens 3RA2318-8XB30-1AK6 is a SIRIUS reversing contactor assembly — a pre-wired pair of contactors with mechanical interlock that reverses a three-phase motor without external wiring. It ships with two 3RT2018-1AK62 contactors already mounted and interlocked, so the panel builder gets a single order code instead of sourcing contactors, interlock, and bus bars separately. Rated at 7.5 kW at 400 V AC-3 (14 A at 480 V, 10 hp at 460/480 V), it handles reversing duty on pumps, conveyors, and small hoists within that motor current envelope. The S00 frame keeps the footprint tight: 90 mm wide, 68 mm tall, 73 mm deep. Screw-type terminals on both the main circuit and the coil accept 2x (0.5…1.5 mm²), 2x (0.75…2.5 mm²), or 2x 4 mm² solid or stranded conductors — no ferrule crimping needed for the larger sizes. The 90 mm width and 68 mm height mean it occupies roughly the space of two standard contactors side by side, but pre-interlocked. Shock resistance is rated at 11.4 g for 5 ms and 7.3 g for 10 ms on both AC and DC axes — robust enough for machine-mounted applications with moderate vibration.","metaTitle":"Siemens 3RA2318-8XB30-1AK6 SIRIUS Reversing Contactor Assemb","metaDescription":"Siemens 3RA2318-8XB30-1AK6 SIRIUS reversing contactor assembly, size S00, 7.5 kW at 400 V AC-3. Screw terminals, snap-on DIN rail. Current lifecycle stage. Quoted on request.","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":"11,4g / 5 ms, 7,3g / 10 ms","at DC":"11,4g / 5 ms, 7,3g / 10 ms","Height":"68 mm","Upwards":"6 mm","Forwards":"6 mm","at 50 Hz":"0.28","at 60 Hz":"0.85 ... 1.1","Backwards":"0 mm","Downwards":"6 mm","At The Side":"6 mm","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 standard mounting 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)","Product Brand Name":"SIRIUS","Product Designation":"Reversing contactor assembly","Of Contactor Typical":"10 000 000","at 400 V rated value":"7.5 kW","at 480 V rated value":"14 A","at 50 Hz rated value":"110 V","at 500 V rated value":"7.5 kW","at 60 Hz rated value":"120 V","at 600 V rated value":"11 A","at 690 V rated value":"7.5 kW","For Main Current Circuit":"screw-type terminals","at 200/208 V rated value":"3 hp","at 220/230 V rated value":"5 hp","at 460/480 V rated value":"10 hp","at 575/600 V rated value":"10 hp","1 Of The Supplied Contactor":"3RT2018-1AK62","2 Of The Supplied Contactor":"3RT2018-1AK62","at AC-3 rated value maximum":"690 V","at AC-3e rated value maximum":"690 V","at AC-4 at 400 V rated value":"5.5 kW","Substance Prohibitance (Date)":"10/01/2009","at AWG cables for main contacts":"2x (20 ... 16), 2x (18 ... 14)","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: 25 A","At Contactor For Auxiliary Contacts":"Screw-type terminals","With Type Of Coordination 1 Required":"gG NH 3NA, DIAZED 5SB, NEOZED 5SE: 50 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":"AC","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":"$73.66","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/dca9304cd2bdc07347d5f2972d047874.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=73962&mlfb=3RA2318-8XB30-1AK6","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RA2318-8XB30-1AK6/alternatives.json"},"ai":{"faq":[{"question":"What is 3RA2318-8XB30-1AK6's listed depth?","answer":"The depth is 73 mm, with a width of 90 mm and height of 68 mm."},{"question":"What conductor sizes does the screw terminal accept?","answer":"The screw-type terminals accept 2x (0.5…1.5 mm²), 2x (0.75…2.5 mm²), or 2x 4 mm² solid or stranded conductors."},{"question":"Will 3RA2318-8XB30-1AK6 drop into a panel specified around 3RT6017-1AF01 without rewiring?","answer":"No — the 3RA2318-8XB30-1AK6 is a pre-assembled reversing assembly with two 3RT2018-1AK62 contactors, while the 3RT6017-1AF01 is a different frame size and coil voltage. Panel layout and wiring would need to be re-evaluated."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA2318-8XB30-1AK6","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/3RA2318-8XB30-1AK6 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}}