{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA2225-1KB24-0BB4","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA2225-1KB24-0BB4","canonicalUrl":"https://aoctrl.com/siemens/3RA2225-1KB24-0BB4","factsUrl":"https://aoctrl.com/api/mcp/products/3RA2225-1KB24-0BB4","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS non-fused reversing motor starter 3RA2, size S0, 5.5 kW at 400 V AC-3, 24 VDC coil, Class 10 thermal overload, snap-on DIN rail.","salesMarkdown":"The Siemens 3RA2225-1KB24-0BB4 is a SIRIUS non-fused reversing motor starter in size S0, combining a contactor and thermal overload relay in one package for forward/reverse control of three-phase motors. Rated at 5.5 kW at 400 V AC-3 (7.5 hp at 460/480 V, 10 hp at 575/600 V), it handles reversing duty on pumps, conveyors, and other loads that need direction change. Coil voltage is 24 VDC, so it integrates directly into a 24 VDC control circuit without an interposing relay. Snap-on fastening on 35 mm DIN rail, vertical mounting position only. The S0 footprint is 90 mm wide, 130 mm deep, 265 mm tall — plan for that height in shallow enclosures. Clearance requirements: 30 mm upwards, 10 mm forwards, 10 mm downwards, 9 mm at the side, 0 mm backwards — tight side-by-side stacking is possible. The unit ships with a 3RT2024-1BB40 contactor, a 3RA2921-1BA00 link module, and a 3RA2922-1AA00 busbar adapter — all pre-assembled, so no separate ordering of those subcomponents.","metaTitle":"Siemens 3RA2225-1KB24-0BB4 SIRIUS Reversing Starter","metaDescription":"Siemens 3RA2225-1KB24-0BB4 SIRIUS non-fused reversing motor starter, 5.5 kW at 400 V AC-3, 24 VDC coil, Class 10, snap-on DIN rail. Active production.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Motor Starters"],"specifications":{"Depth":"130 mm","Width":"90 mm","title":"3RA2225-1KB24-0BB4","Height":"265 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","description":"Combination Starter Reversing FLA Range 9-12.5 3 Pole 24VDC Coil S0 Open Type 1NO <(>&<)> 1NC Aux","During Storage":"-50 ... +80 °C","lifecycle_stage":"current","During Operation":"-20 ... +60 °C","During Transport":"-55 ... +80 °C","Fastening Method":"snap-on fastening on 35 mm DIN rail","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":"2 hp","at 400 V rated value":"5 500 W","at 480 V rated value":"11 A","at 500 V rated value":"7 500 W","at 600 V rated value":"11 A","Design Of The Product":"reversing starter","at 110/120 V rated value":"0.5 hp","at 200/208 V rated value":"3 hp","at 220/230 V rated value":"3 hp","at 460/480 V rated value":"7.5 hp","at 575/600 V rated value":"10 hp","Of The Supplied Contactor":"3RT2024-1BB40","Of The Supplied Link Module":"3RA2921-1BA00","Size Of The Circuit-Breaker":"S00","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":"3RA2922-1AA00","Design Of The Switching Contact":"electromechanical","Operating Frequency Rated Value":"50 ... 60 Hz","of the supplied RH assembly kit":"3RA2923-1BB1","Design Of The Short-Circuit Trip":"magnetic","Of The Supplied Circuit-Breakers":"3RV2011-1KA15","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","Of The Supplied Standard Mounting Rail Adapter":"3RA2922-1AA00","at 400 V according to IEC 60947-4-1 rated value":"153 000 A","operational current at AC-3 at 400 V rated value":"11.5 A","Type Of Electrical Connection For Main Current Circuit":"screw-type terminals","Mechanical Service Life (Operating Cycles) Of Contactor Typical":"10 000 000","Response Value Current Of Instantaneous Short-Circuit Trip Unit":"162.5 A","insulation voltage with degree of pollution 3 at AC rated value":"690 V","Type Of Connectable Conductor Cross-Sections For Main Contacts Stranded":"1 ... 10 mm², 2x (2.5 ... 6 mm²)","Adjustable Current Response Value Current Of The Current-Dependent Overload Release":"9 ... 12.5 A","Connectable Conductor Cross-Section For Main Contacts Finely Stranded With Core End Processing":"1 ... 6 mm²"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/a45fb7749e768458fe57e075cdad92da.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=76601&mlfb=3RA2225-1KB24-0BB4"},"ai":{"faq":[{"question":"Is the 3RA2225-1KB24-0BB4 suitable for reversing applications?","answer":"Yes — it is explicitly designed as a reversing starter, with the contactor and interlock built in for forward/reverse motor control."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA2225-1KB24-0BB4","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/3RA2225-1KB24-0BB4 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}}