{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA2225-4ED27-0AK6","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA2225-4ED27-0AK6","canonicalUrl":"https://aoctrl.com/siemens/3RA2225-4ED27-0AK6","factsUrl":"https://aoctrl.com/api/mcp/products/3RA2225-4ED27-0AK6","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RA2 non-fused reversing motor starter, size S0, 27 A at 480 V, Class 10 thermal bimetallic overload, 88-121 VAC / 96-132 VAC coil, for 60 mm busbar systems.","salesMarkdown":"The Siemens 3RA2225-4ED27-0AK6 is a SIRIUS 3RA2 non-fused reversing motor starter in size S0, meaning it combines two contactors and a thermal overload relay in one package to reverse a three-phase motor without needing separate reversing contactor assemblies. Rated 27 A at 480 V and 27 A at 600 V in AC-3 duty, it handles motor loads up to 20 hp at 460/480 V and 25 hp at 575/600 V — typical for reversing conveyors, hoists, or pump applications where direction change is needed. The thermal bimetallic overload relay is set to Trip Class 10, so it protects motors with short starting times (under 10 seconds) — common for fans and centrifugal pumps, but not for high-inertia loads that need Class 20 or 30. Coil voltage is dual-rated: 88-121 V at 50 Hz and 96-132 V at 60 Hz, covering common control transformer taps across North American and European line frequencies. Snaps directly onto 60 mm busbar systems — no separate mounting plate needed for panel builds where busbar distribution is already in place. Mounting position is vertical only; dimensions are 260 mm height, 90 mm width, 155 mm depth, with clearance requirements of 30 mm upward, 10 mm forward, 10 mm downward, 9 mm at the side, and 0 mm backward. Main contact wiring accepts stranded conductors from 1 to 10 mm², or two conductors of 2.5 to 6 mm² each — useful for paralleling feeds in high-current reversing circuits. The supplied contactor is a 3RT2027-1AK60 and the link module is 3RA2921-1AA00; the circuit-breaker size is S0, matching the feeder size for coordinated Type 1 or Type 2 protection schemes.","metaTitle":"Siemens 3RA2225-4ED27-0AK6 SIRIUS Reversing Starter, 27 A","metaDescription":"Siemens 3RA2225-4ED27-0AK6 SIRIUS non-fused reversing motor starter, size S0, 27 A at 480 V, Class 10 thermal overload, 88-121 VAC / 96-132 VAC coil.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Motor Starters"],"specifications":{"Depth":"155 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":"690 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":"5 hp","at 400 V rated value":"15 000 W","at 480 V rated value":"27 A","at 50 Hz rated value":"88 ... 121 V","at 500 V rated value":"18 500 W","at 60 Hz rated value":"96 ... 132 V","at 600 V rated value":"27 A","Design Of The Product":"reversing starter","at 200/208 V rated value":"10 hp","at 220/230 V rated value":"10 hp","at 460/480 V rated value":"20 hp","at 575/600 V rated value":"25 hp","Of The Supplied Contactor":"3RT2027-1AK60","For Main Contacts Stranded":"1 ... 10 mm², 2x (2.5 ... 6 mm²)","Of The Supplied Link Module":"3RA2921-1AA00","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":"3RV2021-4EA15","Product Extension Auxiliary Switch":"Yes","Surge Voltage Resistance Rated Value":"6 kV","Number Of Poles For Main Current Circuit":"3","Product Function Short Circuit Protection":"Yes","apparent holding power of magnet coil at AC":"9.4 VA","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","at 500 V according to IEC 60947-4-1 rated value":"100 000 A","operational current at AC-3 at 400 V rated value":"29 A","Type Of Electrical Connection For Main Current Circuit":"screw-type terminals","Inductive Power Factor With The Holding Power Of The Coil":"0.28","Mechanical Service Life (Switching Cycles) Of Contactor Typical":"10 000 000","Response Value Current Of Instantaneous Short-Circuit Trip Unit":"416 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":"27 ... 32 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":"https://cdn.aoctrl.com/961fb4a6be89ac7acb7fd0ab7610b3b4.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=49581&mlfb=3RA2225-4ED27-0AK6","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RA2225-4ED27-0AK6/alternatives.json"},"ai":{"faq":[{"question":"Is 3RA2225-4ED27-0AK6 a reversing motor starter?","answer":"Yes, the 3RA2225-4ED27-0AK6 is a reversing starter — it integrates two contactors and a thermal overload in one S0-size package to reverse a three-phase motor."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA2225-4ED27-0AK6","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/3RA2225-4ED27-0AK6 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}}