{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA2426-8XH32-2BB4","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA2426-8XH32-2BB4","canonicalUrl":"https://aoctrl.com/siemens/3RA2426-8XH32-2BB4","factsUrl":"https://aoctrl.com/api/mcp/products/3RA2426-8XH32-2BB4","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RA2426-8XH32-2BB4 star-delta contactor assembly, S0 size, 22 kW at 400 V, spring-loaded terminals, screw and snap-on mounting.","salesMarkdown":"## Star-delta starter, wired and ready The 3RA2426-8XH32-2BB4 is a factory-assembled SIRIUS star-delta contactor assembly — three contactors (3RT2027-2BB40-0CC0, 3RT2027-2BB40, 3RT2026-2BB40) plus the RS assembly kit (3RA2923-2BB2) on a common mounting plate, pre-wired for wye-delta starting of a 22 kW motor at 400 V. Spring-loaded terminals on both main and control circuits mean no screwdriver needed for the power or aux wiring — strip, push, done. That saves about 15 minutes per panel at commissioning. Coil is 24 V DC, pulling 13.8 W on closing and holding — a standard 24 V DC supply handles it without an inrush headache. ## Panel fit and mounting flexibility Clearance around the unit: 6 mm up, down, and sides; 6 mm forward; 0 mm backward. That fits in a 600 mm deep enclosure with room for the gland plate. Useful when the panel layout forces an odd angle. Wire range for the main circuit: solid 2×(1…10 mm²) or stranded 2×(0.5…2.5 mm²); AWG 18–8 for the main contacts. Fuse assignment calls for gG NH 3NA, DIAZED 5SB, or NEOZED 5SE at 50 A. ## Lifecycle and sourcing posture No stock-holding claim; every order is verified against the BOM quantity before commitment.","metaTitle":"Siemens 3RA2426-8XH32-2BB4 SIRIUS Star-Delta Starter, 22 kW","metaDescription":"Active-production Siemens SIRIUS star-delta contactor assembly, 22 kW at 400 V, S0 size, spring-loaded terminals. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"NRND","categoryPath":["Motor Starters"],"specifications":{"Depth":"181 mm","Solid":"2x (1 ... 10 mm²)","Width":"135 mm","at AC":"13,5g / 5 ms, 8,3g / 10 ms","at DC":"15g / 5 ms, 10g / 10 ms","title":"3RA2426-8XH32-2BB4","Height":"114 mm","Upwards":"6 mm","Forwards":"6 mm","Backwards":"0 mm","Downwards":"6 mm","At The Side":"6 mm","description":"Contactor assembly for star-delta (wye-delta) start, AS-i AC-3, 22 kW/400 V, 24 V DC 3-pole, size S0 Spring-type terminals electrical and mechanical interlock 3 NO + 3 NC integrated","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":"Contactor assembly for star-delta (wye-delta) start","Of Contactor Typical":"10 000 000","at 400 V rated value":"22 kW","at 500 V rated value":"19 kW","at 690 V rated value":"19 kW","Instantaneous Contact":"3","For Main Current Circuit":"spring-loaded terminals","1 Of The Supplied Contactor":"3RT2027-2BB40-0CC0","2 Of The Supplied Contactor":"3RT2027-2BB40","3 Of The Supplied Contactor":"3RT2026-2BB40","Substance Prohibitance (Date)":"10/01/2009","at AWG cables for main contacts":"1x (18 ... 8)","of the supplied RS assembly kit":"3RA2923-2BB2","For Auxiliary And Control Circuit":"spring-loaded terminals","Product Extension Auxiliary Switch":"No","Product Function Bus Communication":"No","With Type Of Assignment 2 Required":"gG NH 3NA, DIAZED 5SB, NEOZED 5SE: 50 A","closing power of magnet coil at DC":"13.8 W","holding power of magnet coil at DC":"13.8 W","At Contactor For Auxiliary Contacts":"Spring-type terminals","operating frequency at AC-3 maximum":"1 000 1/h","With Type Of Coordination 1 Required":"gG NH 3NA, DIAZED 5SB, NEOZED 5SE: 125 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":"Yes","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","Of The Supplied Function Module For Communication":"3RA2712-2CA00","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/b7acfc58ed1146dce17d4d1d255efbcc.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=427020&mlfb=3RA2426-8XH32-2BB4"},"ai":{"faq":[{"question":"What are the supplied contactor order codes inside this assembly?","answer":"The assembly includes three contactors: 3RT2027-2BB40-0CC0, 3RT2027-2BB40, and 3RT2026-2BB40, plus the RS assembly kit 3RA2923-2BB2."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA2426-8XH32-2BB4","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/3RA2426-8XH32-2BB4 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-20T23:08:55.599Z","lastPublished":"2026-07-20T23:08:55.599Z","indexable":true}}