{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA2120-1JH24-0AP0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA2120-1JH24-0AP0","canonicalUrl":"https://aoctrl.com/siemens/3RA2120-1JH24-0AP0","factsUrl":"https://aoctrl.com/api/mcp/products/3RA2120-1JH24-0AP0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS direct online starter, 3RA2120-1JH24-0AP0, 690 V rated, Class 10 trip, 45 mm wide, snap-on for 60 mm busbar systems.","salesMarkdown":"The Siemens 3RA2120-1JH24-0AP0 is a SIRIUS direct online starter, size S0, designed for snapping onto 60 mm busbar systems. It combines a contactor and overload relay into a single, pre-assembled unit for motor starting and protection in control panels. Rated for a maximum of 690 V AC-3, this starter handles motor loads up to 10 A at 600 V and delivers 7.5 hp at 460/480 V. The starter snaps directly onto 60 mm busbar systems, a common panel layout for motor control centers. It requires 50 mm clearance upwards, 20 mm forwards, and 20 mm at the side for airflow and wiring access. The main circuit uses spring-loaded terminals, so no screw tightening is needed on the power connections. Mounting position is vertical only. The supplied contactor is a 3RT2024-2AP00 and the link module is 3RA2921-2AA00, so replacement parts are known if a component fails in the field.","metaTitle":"Siemens 3RA2120-1JH24-0AP0 SIRIUS Direct Starter, 690V","metaDescription":"Siemens 3RA2120-1JH24-0AP0 SIRIUS direct online starter, 690V rated, Class 10 trip, 45mm wide, snap-on for 60mm busbars. Current lifecycle. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Motor Starters"],"specifications":{"Depth":"165 mm","Width":"45 mm","title":"3RA2120-1JH24-0AP0","Height":"260 mm","Upwards":"50 mm","Forwards":"20 mm","at 50 Hz":"0.25","Backwards":"0 mm","Downwards":"10 mm","Trip Class":"CLASS 10","At The Side":"20 mm","Rated Value":"690 V","description":"Load feeder fuseless, Direct-on-line starting 400 V AC, Size S0 7.00...10.0 A 230 V AC Spring-type terminal for 60 mm busbar systems (also fulfills type of coordination 1) Type of coordination 2, Iq = 150 kA 1 NO+1 NC (contactor)","During Storage":"-50 ... +80 °C","lifecycle_stage":"current","During Operation":"-20 ... +60 °C","During Transport":"-50 ... +80 °C","Fastening Method":"for snapping onto 60 mm busbar systems","Mounting Position":"vertical","PROFIsafe protocol":"No","Product Brand Name":"SIRIUS","Type Of Assignment":"2","Product Designation":"Direct (on-line) starter","Size Of Load Feeder":"S0","PROFINET IO protocol":"No","at 230 V rated value":"1.5 hp","at 400 V rated value":"4 000 kW","at 480 V rated value":"10 A","at 50 Hz rated value":"230 ... 230 V","at 600 V rated value":"10 A","Design Of The Product":"for 60 mm busbars","For Main Current Circuit":"spring-loaded terminals","Temperature Compensation":"-20 ... +60 °C","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":"3RT2024-2AP00","Of The Supplied Link Module":"3RA2921-2AA00","Size Of The Circuit-Breaker":"S0","at AC-3 rated value maximum":"690 V","at AC-3 at 400 V rated value":"10 A","at AC-3e rated value maximum":"690 V","Substance Prohibitance (Date)":"03/01/2017","at AC-3e at 400 V rated value":"10 A","Design Of The Overload Release":"thermal (bimetallic)","Of The Supplied Busbar Adapter":"8US1251-5NT11","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":"3RV2021-1JA20","degree of protection NEMA rating":"other","For Auxiliary And Control Circuit":"spring-loaded terminals","Product Extension Auxiliary Switch":"Yes","Relative Humidity During Operation":"10 ... 95 %","Without Load Current Share Typical":"7.6 W","Surge Voltage Resistance Rated Value":"6 kV","at AC in hot operating state per pole":"3.4 W","Number Of Poles For Main Current Circuit":"3","Product Function Short Circuit Protection":"Yes","apparent holding power of magnet coil at AC":"7.6 VA","protocol is supported AS-Interface protocol":"No","with high demand rate according to SN 31920":"73 %","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","at 400 V according to IEC 60947-4-1 rated value":"150 000 A","Inductive Power Factor With The Holding Power Of The Coil":"0.25","Mechanical Service Life (Operating Cycles) Of Contactor Typical":"10 000 000","Response Value Current Of Instantaneous Short-Circuit Trip Unit":"130 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":"7 ... 10 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/7e6f4011c3df4a4cba5d1e2df8ba019c.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=54127&mlfb=3RA2120-1JH24-0AP0"},"ai":{"faq":[{"question":"Where can I buy the 3RA2120-1JH24-0AP0?","answer":"This SIRIUS direct starter is sourced to order; availability and pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA2120-1JH24-0AP0","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/3RA2120-1JH24-0AP0 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}}