{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA2120-0HD23-0AP6","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA2120-0HD23-0AP6","canonicalUrl":"https://aoctrl.com/siemens/3RA2120-0HD23-0AP6","factsUrl":"https://aoctrl.com/api/mcp/products/3RA2120-0HD23-0AP6","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RA2120-0HD23-0AP6 non-fused motor starter, direct starter design, size S0, 180 W at 400 V, Class 10 trip, 690 V rated, snaps onto 60 mm busbar.","salesMarkdown":"## S0 direct starter, 180 W at 400 V — what it means for the panel This SIRIUS 3RA2120-0HD23-0AP6 is a non-fused direct starter, size S0, rated 180 W at 400 V and 370 W at 690 V. It snaps onto a 60 mm busbar system and mounts vertically. The envelope is 155 mm deep, 45 mm wide, and 260 mm tall — that 45 mm width is one standard 45 mm module on the busbar, so it fits in a single slot without wasting rail space. ## What's inside the box — supplied subcomponents The starter ships as a pre-assembled unit with a 3RT2023-1AP60 contactor, a 3RV2011-0HA10 circuit-breaker, a 3RA2921-1AA00 link module, and a 8US1251-5NT10 busbar adapter. That means you get the coordination already engineered between the breaker and contactor — no separate selectivity study needed for this feeder. AWG equivalent is 2× (16 to 12) or 2× (14 to 8). The overload release is thermal bimetallic; the short-circuit trip is magnetic — a standard combination for motor branch circuit protection per IEC 60947-4-1. ## Clearance and temperature — fitting it in a crowded enclosure Required clearances: 30 mm upwards, 10 mm forwards, 10 mm downwards, 9 mm at the sides, and 0 mm backwards. That backward zero means the back of the unit can sit flush against the panel backplate — useful when gland-plate depth is tight. Operating ambient is -20 to +60 °C, storage -50 to +80 °C, transport -55 to +80 °C. The 60 °C ceiling is typical for inside a steel enclosure with some solar gain; above that, you'd need to derate or force-ventilate.","metaTitle":"Siemens 3RA2120-0HD23-0AP6 SIRIUS non-fused motor starter","metaDescription":"Siemens 3RA2120-0HD23-0AP6 SIRIUS non-fused direct starter, size S0, 180 W at 400 V, Class 10, snaps onto 60 mm busbar. Current lifecycle active.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Motor Starters"],"specifications":{"Depth":"155 mm","Width":"45 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 400 V rated value":"180 W","at 50 Hz rated value":"176 ... 242 V","at 500 V rated value":"250 W","at 60 Hz rated value":"192 ... 264 V","at 690 V rated value":"370 W","Design Of The Product":"direct starter","Of The Supplied Contactor":"3RT2023-1AP60","For Main Contacts Stranded":"1 ... 10 mm², 2x (2.5 ... 6 mm²)","Of The Supplied Link Module":"3RA2921-1AA00","Size Of The Circuit-Breaker":"S00","at AC-3 rated value maximum":"690 V","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)","Design Of The Short-Circuit Trip":"magnetic","Of The Supplied Circuit-Breakers":"3RV2011-0HA10","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":"7.2 VA","number of NC contacts for auxiliary contacts":"1","number of NO contacts for auxiliary contacts":"1","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":"0.6 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":"10.4 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":"0.55 ... 0.8 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/19c168f246fcced0fd8f9327c6669bf8.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=11671&mlfb=3RA2120-0HD23-0AP6","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RA2120-0HD23-0AP6/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA2120-0HD23-0AP6","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/3RA2120-0HD23-0AP6 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}}