{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA2326-8XB30-2FB4","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA2326-8XB30-2FB4","canonicalUrl":"https://aoctrl.com/siemens/3RA2326-8XB30-2FB4","factsUrl":"https://aoctrl.com/api/mcp/products/3RA2326-8XB30-2FB4","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS reversing contactor assembly, 3RA2326-8XB30-2FB4, S0 size, 11 kW at 400 V AC-3, 24 V DC coil, spring-loaded terminals.","salesMarkdown":"The Siemens 3RA2326-8XB30-2FB4 is a SIRIUS reversing contactor assembly — two mechanically interlocked contactors in one package, sized S0, ready to reverse a three-phase motor on command. It ships with two 3RT2026-2FB40 contactors already mounted and interlocked, so you don't have to source the pair separately or build the mechanical interlock yourself. Rated 11 kW at 400 V AC-3 (21 A at 480 V, 22 A at 600 V), it handles reversing duty on pumps, conveyors, and hoists up to that motor load. The 24 V DC coil with a diode-combination surge suppressor means the control circuit is protected against inductive kickback — no external flyback diode needed. Dimensions are 114 mm high, 90 mm wide, 145 mm deep — fits a standard S0 contactor footprint in the panel. Clearance around the assembly: 6 mm upwards, forwards, downwards, and to the side; 0 mm backwards (mounts flat to the rail). Main current circuit uses spring-loaded terminals; the magnet coil terminates on spring-type terminals as well — no screwdriver needed for wiring. Solid wire accepted: 2x (1 … 10 mm²) for the main circuit, 2x (0.5 … 2.5 mm²) for the control circuit; AWG 18 to 8 for the main contacts. The AC-3 rating at 400 V (11 kW) is the motor-switching duty figure that governs real use — it's the current the contactor can make and break under full-load motor starting, not just carry continuously. At AC-4 (reversing/inching duty at 400 V) it's rated 7.5 kW — lower because the contactor sees more frequent make/break cycles under load. HP ratings are also listed: 7.5 hp at 220/230 V, 15 hp at 460/480 V, 20 hp at 575/600 V — useful for North American panel builds. Two instantaneous auxiliary contacts are built in for feedback or status signaling. Vibration resistance: 13.5 g / 5 ms and 8.3 g / 10 ms on AC; 15 g / 5 ms and 10 g / 10 ms on DC — tough enough for machine-mounted applications.","metaTitle":"Siemens 3RA2326-8XB30-2FB4 SIRIUS Reversing Contactor","metaDescription":"Siemens SIRIUS 3RA2326-8XB30-2FB4 reversing contactor assembly, 11 kW at 400 V AC-3, 24 V DC coil. S0 size, spring-loaded terminals.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Motor Starters"],"specifications":{"Depth":"145 mm","Solid":"2x (1 ... 10 mm²)","Width":"90 mm","at AC":"13,5g / 5 ms, 8,3g / 10 ms","at DC":"15g / 5 ms, 10g / 10 ms","title":"3RA2326-8XB30-2FB4","Height":"114 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, 25 A, 11 kW / 400 V, 3-pole, 24 V DC, with integrated diode, spring-loaded terminal, electrical and mechanical interlock, auxiliary contacts: 2 x 1 NO","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":"S0","Solid Or Stranded":"2x (0.5 ... 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":"11 kW","at 480 V rated value":"21 A","at 500 V rated value":"11 kW","at 600 V rated value":"22 A","at 690 V rated value":"11 kW","Instantaneous Contact":"2","For Main Current Circuit":"spring-loaded terminals","at 220/230 V rated value":"7.5 hp","at 460/480 V rated value":"15 hp","at 575/600 V rated value":"20 hp","Per Direction Of Rotation":"1","1 Of The Supplied Contactor":"3RT2026-2FB40","2 Of The Supplied Contactor":"3RT2026-2FB40","at AC-4 at 400 V rated value":"7.5 kW","Substance Prohibitance (Date)":"10/01/2009","Design Of The Surge Suppressor":"Diode combination","at AWG cables for main contacts":"1x (18 ... 8)","of the supplied RH assembly kit":"3RA2923-2AA2","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: 35 A","closing power of magnet coil at DC":"5.9 W","holding power of magnet coil at DC":"5.9 W","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: 100 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":"DC","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/b661b81ea7d81788a7661c218316281c.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=78056&mlfb=3RA2326-8XB30-2FB4"},"ai":{"faq":[{"question":"What is the difference between this reversing contactor assembly and a standard contactor?","answer":"A reversing contactor assembly like the 3RA2326-8XB30-2FB4 contains two mechanically interlocked contactors in one package, so only one can close at a time — this prevents a phase-to-phase short when reversing a motor. A standard single contactor can only switch one direction."},{"question":"Does the 3RA2326-8XB30-2FB4 include a mechanical interlock?","answer":"Yes, the two supplied 3RT2026-2FB40 contactors are mechanically interlocked within the assembly — that's the core function of a reversing contactor assembly."},{"question":"What is the 3RA2326-8XB30-2FB4's listed depth?","answer":"The depth is 145 mm, which is standard for the S0 contactor size."},{"question":"What wire sizes does the 3RA2326-8XB30-2FB4 accept?","answer":"The main circuit accepts 2x (1 … 10 mm²) solid or stranded; the control circuit accepts 2x (0.5 … 2.5 mm²). AWG 18 to 8 for the main contacts."},{"question":"Where can I buy the Siemens 3RA2326-8XB30-2FB4 reversing contactor?","answer":"This part is sourced to order against an RFQ. Availability and pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA2326-8XB30-2FB4","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/3RA2326-8XB30-2FB4 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}}