{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA2326-8XB30-2BB4","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA2326-8XB30-2BB4","canonicalUrl":"https://aoctrl.com/siemens/3RA2326-8XB30-2BB4","factsUrl":"https://aoctrl.com/api/mcp/products/3RA2326-8XB30-2BB4","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS reversing contactor assembly, 3RA2326-8XB30-2BB4, 24 VDC coil, S0 frame, 11 kW at 400 V AC-3, spring-loaded terminals, screw and snap-on 35 mm DIN rail.","salesMarkdown":"## Integrator note — what this reversing contactor assembly actually is The Siemens 3RA2326-8XB30-2BB4 is a factory-assembled SIRIUS reversing contactor assembly, not a bare contactor. It ships with two 3RT2026-2BB40 contactors and a mechanical interlock (RH assembly kit 3RA2923-2AA2) already mounted on a common baseplate. The 24 VDC coil means it drops into a 24 V control circuit without a separate power supply conversion — common for PLC-driven panels. Rated 11 kW at 400 V AC-3 and 21 A at 480 V, it handles reversing duty on three-phase motors up to that load. The S0 frame size keeps the footprint compact: 90 mm wide, 114 mm high, 95 mm deep. The AC-3 rating (11 kW at 400 V) governs the motor switching duty — starting and stopping a squirrel-cage induction motor under load. If your reversing application involves frequent jogging, size the motor load to the AC-4 figure, not the AC-3 headline. The 24 VDC coil draws from the control transformer or PLC output; verify the coil's inrush current against your DC supply's capacity — spring-type terminals accept 2x (0.5... 2.5 mm²) solid or stranded, which matches standard control wiring. Clearance around the unit: 6 mm upwards, forwards, downwards, and to the sides; 0 mm backwards (–), so it can sit flush against the back panel. The spring-loaded terminals for the main current circuit accept 1x (18... 8) AWG or 2x (1... 10 mm²) solid. Two instantaneous auxiliary contacts are built in — enough for a feedback signal to the PLC or a seal-in circuit without adding a separate aux block.","metaTitle":"Siemens 3RA2326-8XB30-2BB4 reversing contactor, 24 VDC coil","metaDescription":"Siemens SIRIUS 3RA2326-8XB30-2BB4 reversing contactor assembly, 24 VDC coil, 11 kW at 400 V, S0 size, spring terminals. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Motor Starters"],"specifications":{"Depth":"95 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":"3RA2326-8XB30-2BB4","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, 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":"3RT2026-2BB40","2 Of The Supplied Contactor":"3RT2026-2BB40","at AC-4 at 400 V rated value":"7.5 kW","Substance Prohibitance (Date)":"10/01/2009","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=132947&mlfb=3RA2326-8XB30-2BB4"},"ai":{"faq":[{"question":"Does 3RA2326-8XB30-2BB4 include built-in auxiliary contacts?","answer":"Yes, it includes 2 instantaneous auxiliary contacts as standard. No separate aux block is required for basic feedback or interlocking."},{"question":"Can 3RA2326-8XB30-2BB4 be used for star-delta starting?","answer":"No, this is a reversing contactor assembly designed for forward/reverse motor control, not star-delta starting. A star-delta starter requires three contactors and a different mechanical interlock arrangement."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA2326-8XB30-2BB4","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/3RA2326-8XB30-2BB4 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}}