{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA2318-8XB30-2AP0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA2318-8XB30-2AP0","canonicalUrl":"https://aoctrl.com/siemens/3RA2318-8XB30-2AP0","factsUrl":"https://aoctrl.com/api/mcp/products/3RA2318-8XB30-2AP0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RA2318-8XB30-2AP0 reversing contactor assembly, size S00, 7.5 kW at 400 V AC-3, 14 A at 480 V, spring-loaded terminals, 84x90x83 mm, DIN rail mount.","salesMarkdown":"## What this reversing contactor assembly is — and what it replaces in a panel The 3RA2318-8XB30-2AP0: This is a Siemens SIRIUS reversing contactor assembly — two mechanically interlocked contactors in one housing, so a single motor can be driven forward and reverse without a separate reversing starter or external interlocks. The supplied contactors inside are two 3RT2018-2AP02 units, size S00 frame. At 480 V it delivers 14 A; at 600 V, 11 A. The horsepower ratings span 3 hp at 200/208 V up to 10 hp at 460/480 V and 575/600 V. Mechanical life is rated at 10 million operating cycles — the interlock is a mechanical bar, not a relay, so there's no timing drift between the forward and reverse contactors. ## Termination, wire sizes, and clearance — what fits in the enclosure Both the main current circuit and the magnet coil use spring-loaded terminals (cage clamp style). No screwdriver torque to set — just strip and push. The envelope is 84 mm high, 90 mm wide, 83 mm deep — size S00 frame. Clearance requirements: 6 mm upwards, 6 mm downwards, 6 mm to the side, 6 mm forwards, 0 mm backwards (flush to the rail). That 0 mm rear clearance means it can sit tight against a back panel or a busbar shield. Vibration resistance is 11.4 g at 5 ms and 7.3 g at 10 ms for both AC and DC excitation. ## Lifecycle and sourcing — active, quoted to order RoHS compliance date is 10/01/2009 — the assembly meets the EU RoHS directive from that date forward.","metaTitle":"Siemens 3RA2318-8XB30-2AP0 SIRIUS Reversing Contactor","metaDescription":"Siemens SIRIUS reversing contactor assembly, size S00, 7.5 kW at 400 V AC-3, 14 A at 480 V. Current production — quoted to order against BOM.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Motor Starters"],"specifications":{"Depth":"83 mm","Solid":"2x (0.5 ... 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","title":"3RA2318-8XB30-2AP0","Height":"84 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","description":"reversing contactor assembly, AC-3e/AC-3, 16 A, 7.5 kW / 400 V, 3-pole, 230 V AC, 50/60 Hz, spring-loaded terminal, electrical and mechanical interlock","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Spring-type terminals","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 ... 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":"230 V","at 500 V rated value":"7.5 kW","at 60 Hz rated value":"230 V","at 600 V rated value":"11 A","at 690 V rated value":"7.5 kW","For Main Current Circuit":"spring-loaded 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":"3RT2018-2AP02","2 Of The Supplied Contactor":"3RT2018-2AP02","at AC-4 at 400 V rated value":"5.5 kW","Substance Prohibitance (Date)":"10/01/2009","at AWG cables for main contacts":"1x (20 ... 12)","of the supplied RH assembly kit":"3RA2913-2AA2","For Auxiliary And Control Circuit":"spring-loaded 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":"Spring-type terminals","operating frequency at AC-3 maximum":"750 1/h","With Type Of Coordination 1 Required":"gG NH 3NA, DIAZED 5SB, NEOZED 5SE: 50 A","at AWG cables for auxiliary contacts":"2x (20 ... 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)","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 %","Finely Stranded Without Core End Processing":"2x (0.5 ... 1.5 mm²)","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","operating voltage at AC-3 rated value maximum":"690 V","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":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/7761e94084cb9ad1f910f01b51f432d0.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=195974&mlfb=3RA2318-8XB30-2AP0"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA2318-8XB30-2AP0","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/3RA2318-8XB30-2AP0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:47:38.189Z","lastPublished":"2026-07-22T19:47:38.189Z","indexable":true}}