{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA2225-4BD26-0BB4","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA2225-4BD26-0BB4","canonicalUrl":"https://aoctrl.com/siemens/3RA2225-4BD26-0BB4","factsUrl":"https://aoctrl.com/api/mcp/products/3RA2225-4BD26-0BB4","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RA2225-4BD26-0BB4, non-fused reversing motor starter, size S0, 24 V DC coil, Class 10 thermal bimetallic overload, snaps onto 60 mm busbar systems.","salesMarkdown":"The Siemens 3RA2225-4BD26-0BB4 is a non-fused reversing motor starter from the SIRIUS family, size S0, designed to switch a motor in both directions from a single control signal. It ships as a factory-assembled unit that includes the contactor 3RT2026-1BB40, the link module 3RA2921-1BA00, and the busbar adapter 8US1251-5NT10 — so you get the reversing interlock and the overload protection in one package, not a pile of loose parts to wire up on the bench. The overload release is thermal bimetallic, trip class 10, which means it protects standard induction motors against running overloads and locked-rotor conditions by following the motor's heating curve. Class 10 is the typical choice for general-purpose conveyor, pump, and fan drives — it trips fast enough to protect the motor windings but not so fast that it nuisance-trips on a normal start. This reversing starter snaps directly onto 60 mm busbar systems — no DIN rail adapter needed, no extra brackets. Mounting position is vertical only, so plan the enclosure layout with that orientation locked in. The depth is 165 mm, width 90 mm, height 260 mm — factor that into your gland-plate and wireway fill before you start pulling cables. Main contact stranded wire range is 1 to 10 mm², or 2x (2.5 to 6 mm²) for paralleled feeds. The coil is 24 V DC rated value. At AC-3 duty (the standard motor-switching category) the maximum operating voltage is 690 V. Power ratings vary by line voltage: at 400 V it handles 7 500 W (10 hp), at 460/480 V it handles 10 hp, and at 575/600 V it handles 15 hp. Current ratings at 480 V are 15.2 A, at 600 V are 17.8 A. These are the numbers that govern the motor nameplate match — size the overload relay to the motor FLA, not the starter's maximum. Operating temperature range is -20 to +60 °C, storage -50 to +80 °C, transport -55 to +80 °C. The starter is rated for a 3 hp motor at 230 V, 5 hp at 200/208 V and 220/230 V, and 1.5 hp at 110/120 V — useful if you're feeding a motor from a control transformer on a lower-voltage control bus.","metaTitle":"Siemens 3RA2225-4BD26-0BB4 Reversing Motor Starter, 24V DC","metaDescription":"Siemens SIRIUS 3RA2225-4BD26-0BB4 non-fused reversing motor starter, 24V DC coil, size S0, Class 10 thermal overload. Snaps onto 60mm busbar. Current","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Motor Starters"],"specifications":{"Depth":"165 mm","Width":"90 mm","Height":"260 mm","Upwards":"30 mm","Forwards":"10 mm","Backwards":"0 mm","Downwards":"10 mm","Trip Class":"CLASS 10","At The Side":"9 mm","Rated Value":"24 V","During Storage":"-50 ... +80 °C","lifecycle_stage":"current","During Operation":"-20 ... +60 °C","During Transport":"-55 ... +80 °C","Fastening Method":"for snapping onto 60 mm busbar systems","Mounting Position":"vertical","Product Brand Name":"SIRIUS","Type Of Assignment":"2","Degree Of Pollution":"3","Product Designation":"non-fused motor starter 3RA2","Size Of Load Feeder":"S0","at 230 V rated value":"3 hp","at 400 V rated value":"7 500 W","at 480 V rated value":"15.2 A","at 500 V rated value":"11 000 W","at 600 V rated value":"17.8 A","Design Of The Product":"reversing starter","at 110/120 V rated value":"1.5 hp","at 200/208 V rated value":"5 hp","at 220/230 V rated value":"5 hp","at 460/480 V rated value":"10 hp","at 575/600 V rated value":"15 hp","Of The Supplied Contactor":"3RT2026-1BB40","For Main Contacts Stranded":"1 ... 10 mm², 2x (2.5 ... 6 mm²)","Of The Supplied Link Module":"3RA2921-1BA00","Size Of The Circuit-Breaker":"S0","at AC-3 rated value maximum":"690 V","Substance Prohibitance (Date)":"03/01/2017","Design Of The Overload Release":"thermal (bimetallic)","Of The Supplied Busbar Adapter":"8US1251-5NT10","Design Of The Switching Contact":"electromechanical","Operating Frequency Rated Value":"50 ... 60 Hz","at AWG cables for main contacts":"2x (16 ... 12), 2x (14 ... 8)","of the supplied RS assembly kit":"3RA2923-1DB1","Design Of The Short-Circuit Trip":"magnetic","Of The Supplied Circuit-Breakers":"3RV2021-4BA15","Product Extension Auxiliary Switch":"Yes","holding power of magnet coil at DC":"5.9 W","Surge Voltage Resistance Rated Value":"6 kV","Number Of Poles For Main Current Circuit":"3","Product Function Short Circuit Protection":"Yes","number of NC contacts for auxiliary contacts":"3","number of NO contacts for auxiliary contacts":"3","shock resistance according to IEC 60068-2-27":"6g / 11 ms","at 400 V according to IEC 60947-4-1 rated value":"153 000 A","operational current at AC-3 at 400 V rated value":"15.5 A","Type Of Electrical Connection For Main Current Circuit":"screw-type terminals","Mechanical Service Life (Switching Cycles) Of Contactor Typical":"10 000 000","Response Value Current Of Instantaneous Short-Circuit Trip Unit":"260 A","insulation voltage with degree of pollution 3 at AC rated value":"690 V","Adjustable Current Response Value Current Of The Current-Dependent Overload Release":"14 ... 20 A","Connectable Conductor Cross-Section For Main Contacts Finely Stranded With Core End Processing":"1 ... 6 mm²"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=396347&mlfb=3RA2225-4BD26-0BB4","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RA2225-4BD26-0BB4/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RA2225-4BD26-0BB4 available via RFQ confirmation?","answer":"This reversing starter is sourced to order against an RFQ through independent distribution. Contact us for current availability and pricing — confirmed at quote time."},{"question":"What are the mounting requirements for 3RA2225-4BD26-0BB4 on a 60mm busbar?","answer":"It snaps directly onto 60 mm busbar systems with no additional adapter. Mounting position is vertical only, with clearance requirements of 30 mm upwards, 10 mm forwards, 10 mm downwards, and 9 mm at the side."},{"question":"What is the trip class of 3RA2225-4BD26-0BB4?","answer":"The overload release is Class 10, thermal bimetallic. This is the standard trip class for general-purpose induction motor protection — fast enough to protect windings during a stall, slow enough to ride through a normal start."},{"question":"What is the difference between 3RA2225-4BD26-0BB4 and a standard reversing starter?","answer":"This is a standard reversing starter — it is the factory-assembled SIRIUS 3RA2 unit that includes the contactor, link module, and busbar adapter. The difference from a non-reversing starter is the built-in mechanical and electrical interlock that prevents both contactors from closing simultaneously."},{"question":"Does 3RA2225-4BD26-0BB4 include auxiliary contacts?","answer":"The evidence for this specific order code does not list auxiliary contact count. The supplied contactor 3RT2026-1BB40 is the base unit; check the contactor datasheet for its auxiliary contact configuration, or specify the full order code with auxiliary block suffix if needed."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA2225-4BD26-0BB4","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/3RA2225-4BD26-0BB4 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}}