{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA2150-4EA35-0NB3","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA2150-4EA35-0NB3","canonicalUrl":"https://aoctrl.com/siemens/3RA2150-4EA35-0NB3","factsUrl":"https://aoctrl.com/api/mcp/products/3RA2150-4EA35-0NB3","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RA2150-4EA35-0NB3 direct-on-line starter, size S2, Trip Class 10, 32 A at 480/600 V, screw and snap-on mounting to two 35 mm DIN rails.","salesMarkdown":"## Panel footprint and mounting — dual DIN rail or screw The 3RA2150-4EA35-0NB3 measures 55 mm wide by 274 mm tall by 150 mm deep, with a clearance envelope that requires 50 mm above, 32 mm in front, 10 mm at the sides, and 10 mm below — no clearance needed behind the unit. ## Motor protection and trip response — Class 10 The supplied contactor is a 3RT2035-1NB30 and the link module is 3RA2931-1AA00 — these are the matched subcomponents that carry the thermal and switching ratings; replacing them with non-Siemens parts voids the coordination. ## Voltage-dependent current ratings — sizing across common line voltages At 480 V the continuous current rating is 32 A; at 600 V it is also 32 A — the rating is current-limited at these voltages, so the same motor FLA applies across 480 V and 600 V systems. Power ratings vary by line voltage: 5 hp at 230 V, 10 hp at 200/208 V and 220/230 V, 20 hp at 460/480 V — the 400 V rating is listed at 18 500 kW, which is likely a data-entry anomaly (the unit should be W or hp); the 32 A ceiling governs the actual motor load selection.","metaTitle":"Siemens 3RA2150-4EA35-0NB3 SIRIUS Direct Starter, Size S2","metaDescription":"Siemens 3RA2150-4EA35-0NB3 SIRIUS direct-on-line starter, size S2, Trip Class 10. Rated 32 A at 480/600 V. Screw and snap-on mounting to two 35 mm DIN rails.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Motor Starters"],"specifications":{"Depth":"150 mm","Width":"55 mm","title":"3RA2150-4EA35-0NB3","Height":"274 mm","Upwards":"50 mm","Forwards":"32 mm","at 50 Hz":"2 VA","at 60 Hz":"2 VA","Backwards":"0 mm","Downwards":"10 mm","Trip Class":"CLASS 10","At The Side":"10 mm","Rated Value":"20 ... 33 V","description":"Load feeder fuseless, Direct-on-line starting 400 V AC, Size S2 22...32 A 20... 33 V AC/DC screw terminal for installation on standard mounting rail (also fulfills type of coordination 1) Type of coordination 2, Iq = 150 kA 1 NO+1 NC (contactor) with circuit (integrated)","During Storage":"-50 ... +80 °C","lifecycle_stage":"current","During Operation":"-20 ... +60 °C","During Transport":"-50 ... +80 °C","Fastening Method":"screw and snap-on mounting to two 35 mm DIN rails","Mounting Position":"vertical, horizontal","PROFIsafe protocol":"No","Product Brand Name":"SIRIUS","Type Of Assignment":"2","Product Designation":"Direct (on-line) starter","Size Of Load Feeder":"S2","PROFINET IO protocol":"No","at 230 V rated value":"5 hp","at 400 V rated value":"18 500 kW","at 480 V rated value":"32 A","at 50 Hz rated value":"20 ... 33 V","at 60 Hz rated value":"20 ... 33 V","at 600 V rated value":"32 A","Design Of The Product":"for standard rail or screw mounting","For Main Current Circuit":"screw-type terminals","Temperature Compensation":"-20 ... +60 °C","at 110/120 V rated value":"2 hp","at 200/208 V rated value":"10 hp","at 220/230 V rated value":"10 hp","at 460/480 V rated value":"20 hp","Of The Supplied Contactor":"3RT2035-1NB30","Of The Supplied Link Module":"3RA2931-1AA00","Size Of The Circuit-Breaker":"S2","at AC-3 rated value maximum":"690 V","at AC-3 at 400 V rated value":"32 A","at AC-3e rated value maximum":"690 V","Substance Prohibitance (Date)":"03/01/2017","at AC-3e at 400 V rated value":"32 A","Design Of The Overload Release":"thermal (bimetallic)","Design Of The Switching Contact":"electromechanical","Operating Frequency Rated Value":"50 ... 60 Hz","Design Of The Short-Circuit Trip":"magnetic","Of The Supplied Circuit-Breakers":"3RV2032-4EA10","degree of protection NEMA rating":"other","For Auxiliary And Control Circuit":"screw-type terminals","Product Extension Auxiliary Switch":"Yes","Relative Humidity During Operation":"10 ... 95 %","Without Load Current Share Typical":"2 W","holding power of magnet coil at DC":"1 W","Surge Voltage Resistance Rated Value":"6 kV","at AC in hot operating state per pole":"8.2 W","Number Of Poles For Main Current Circuit":"3","Product Function Short Circuit Protection":"Yes","apparent holding power of magnet coil at AC":"2 VA","protocol is supported AS-Interface protocol":"No","reference code according to IEC 81346-2:2019":"Q","shock resistance according to IEC 60068-2-27":"6g / 11 ms","Type Of Voltage Of The Control Supply Voltage":"AC/DC","at 400 V according to IEC 60947-4-1 rated value":"150 000 A","Inductive Power Factor With The Holding Power Of The Coil":"1","Mechanical Service Life (Operating 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":"22 ... 32 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$273.05","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/8b18194bba1bcf17d886f7b825b9155e.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=271477&mlfb=3RA2150-4EA35-0NB3"},"ai":{"faq":[{"question":"What is the physical footprint of 3RA2150-4EA35-0NB3?","answer":"The starter body is 55 mm wide, 274 mm tall, and 150 mm deep. Clearance requirements: 50 mm above, 32 mm in front, 10 mm at the sides, and 10 mm below — zero clearance behind the unit."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA2150-4EA35-0NB3","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/3RA2150-4EA35-0NB3 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}}