{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA6120-1EP32","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA6120-1EP32","canonicalUrl":"https://aoctrl.com/siemens/3RA6120-1EP32","factsUrl":"https://aoctrl.com/api/mcp/products/3RA6120-1EP32","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS compact starter, 3RA6120-1EP32, direct starter design, 53 kA breaking capacity at 400 V AC, adjustable Trip Class 10 and 20, 110-240 V AC/DC coil, screw terminals, 45 mm width.","salesMarkdown":"The Siemens 3RA6120-1EP32 is a SIRIUS compact starter — a direct starter design that integrates a contactor and overload relay into a single 45 mm-wide housing. The control coil accepts 110-240 V AC/DC, so you can wire it to a standard control transformer or a DC supply without worrying about coil swap-out. The overload section offers adjustable Trip Class 10 and 20, letting you match the thermal curve to the motor start profile — Class 10 for shorter acceleration times, Class 20 for higher-inertia loads like fans or conveyors. Power dissipation runs 5.2 W AC maximum, 5.8 W DC maximum, which is within tolerance for a standard 45 mm-wide DIN-rail enclosure without forced ventilation. Screw-type terminals on the main circuit accept 0.5 to 4 mm² solid or stranded, with two conductors per terminal up to 2.5 mm² each. Strip length and torque values follow the terminal marking — no special tools beyond a standard screwdriver. Dimensions: 170 mm height, 45 mm width, 165 mm depth. Shock resistance is 60 m/s² (6 g) for 10 ms, three shocks per axis. Vibration resistance: 4 to 5.8 Hz at 15 mm displacement, then 5.8 to 500 Hz at 20 m/s², 10 cycles per axis. These ratings cover most machine-mounted applications without additional dampening.","metaTitle":"Siemens 3RA6120-1EP32 SIRIUS Compact Starter, 53 kA at 400 V","metaDescription":"Siemens SIRIUS 3RA6120-1EP32 compact starter, direct starter design, 53 kA breaking capacity at 400 V AC, adjustable Trip Class 10/20, 110-240 V AC/DC coil, active production, sour","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Motor Starters"],"specifications":{"Depth":"165 mm","Solid":"0.5 ... 4 mm², 2x (0.5 ... 2.5 mm²)","Width":"45 mm","at DC":"110 ... 240 V","Height":"170 mm","at 400 V":"53 kA","at 50 Hz":"110 ... 240 V","at 60 Hz":"110 ... 240 V","Trip Class":"CLASS 10 and 20 adjustable","Recommended":"vertical, on horizontal standard DIN rail","1 Rated Value":"50 Hz","2 Rated Value":"60 Hz","at AC maximum":"5.2 W","at DC maximum":"5.8 W","During Storage":"-55 ... +80 °C","number of LEDs":"2","Type Of Voltage":"AC/DC","lifecycle_stage":"current","During Operation":"-20 ... +60 °C","During Transport":"-55 ... +80 °C","Fastening Method":"screw and snap-on mounting","IO-Link protocol":"No","Shock Resistance":"a=60 m/s2 (6g) with 10 ms per 3 shocks in all axes","Mounting Position":"any","at DC rated value":"240 V","Product Brand Name":"SIRIUS","Type Of Assignment":"continous operation according to IEC 60947-6-2","Degree Of Pollution":"3","Product Designation":"compact starter","Vibration Resistance":"f= 4 ... 5.8 Hz, d= 15 mm; f= 5.8 ... 500 Hz, a= 20 m/s²; 10 cycles","at 400 V rated value":"15 000 W","at 480 V rated value":"32 A","at 50 Hz rated value":"240 V","at 500 V rated value":"1 kA","at 690 V rated value":"1 kA","AS-Interface protocol":"No","Design Of The Product":"direct starter","For Main Current Circuit":"screw-type terminals","at 200/208 V rated value":"7.5 hp","at 220/230 V rated value":"10 hp","at 460/480 V rated value":"20 hp","at AC at 400 V rated value":"32 A","NO-Load Switching Frequency":"3 600 1/h","Of The Main Contacts Typical":"10 000 000","at AC in hot operating state":"5.4 W","at AC-3 at 400 V rated value":"15 kW","Of Auxiliary Contacts Typical":"10 000 000","Substance Prohibitance (Date)":"05/01/2012","Insulation Voltage Rated Value":"690 V","at DC-13 at 6 A at 24 V typical":"30 000","at AC-15 at 6 A at 230 V typical":"200 000","degree of protection NEMA rating":"other","For Auxiliary And Control Circuit":"screw-type terminals","Of The Signaling Contacts Typical":"10 000 000","Between Main And Auxiliary Circuit":"400 V","Design Of Short-Circuit Protection":"electromagnetic","Product Extension Auxiliary Switch":"Yes","Product Function Bus Communication":"No","Relative Humidity During Operation":"10 ... 90 %","Without Load Current Share Typical":"5.8 W","Surge Voltage Resistance Rated Value":"6 000 V","Between Control And Auxiliary Circuit":"300 V","at AC in hot operating state per pole":"1.8 W","for AWG cables for auxiliary contacts":"2x (20 ... 14)","Between Auxiliary And Auxiliary Circuit":"250 V","due to burst according to IEC 61000-4-4":"4 kV main contacts, 2 kV auxiliary contacts","reference code according to IEC 81346-2":"Q","Finely Stranded With Core End Processing":"0.5 ... 2.5 mm², 2x (0.5 ... 1.5 mm²)","Number Of Poles For Main Current Circuit":"3","Formula For Making Capacity Limit Current":"12 x Ie","Product Function Short Circuit Protection":"Yes","Supply voltage required Auxiliary voltage":"No","with low demand rate according to SN 31920":"40 %","Formula For Limit Current Breaking Capacity":"10 x Ie","at AC-41 according to IEC 60947-6-2 maximum":"750 1/h","at AC-43 according to IEC 60947-6-2 maximum":"250 1/h","with high demand rate according to SN 31920":"50 %","number of NC contacts for auxiliary contacts":"1","number of NO contacts for auxiliary contacts":"1","operating voltage at AC-3 rated value maximum":"690 V","electrostatic discharge according to IEC 61000-4-2":"8 kV","contact rating of auxiliary contacts according to UL":"contacts 21-22, 13-14, 43-44 Q600 / A600, contacts 77-78 R300 / B300, contacts 95-96-98 R300 / D300","Product Component Removable Terminal For Main Circuit":"Yes","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","product function control circuit interface with IO link":"No","conducted HF interference emissions according to CISPR11":"150 kHz ... 30 MHz Class A","field-bound HF interference emission according to CISPR11":"30 ... 1000 MHz Class A","operational current of auxiliary contacts at AC-12 maximum":"10 A","For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gL/gG: 10 A","Product Function Control Circuit Interface To Parallel Wiring":"Yes","Product Component Removable Terminal For Auxiliary And Control Circuit":"Yes","Adjustable Current Response Value Current Of The Current-Dependent Overload Release":"8 ... 32 A","number of NO contacts of instantaneous short-circuit trip unit for signaling contact":"1","For Short-Circuit Protection Of The Signaling Switch Of The Overload Release Required":"4A gL/gG/400V","number of CO contacts of the current-dependent overload release for signaling contact":"1","For Short-Circuit Protection Of The Signaling Switch Of The Short-Circuit Release Required":"6A gL/gG/400V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$417.83 – $1,115.99","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=428898&mlfb=3RA6120-1EP32","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RA6120-1EP32/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings for the 3RA6120-1EP32?","answer":"Breaking capacity: 53 kA at 400 V AC. Control voltage: 110-240 V AC/DC. Rated power: 15 kW at 400 V AC. Rated current: 32 A at 480 V AC. Horsepower ratings: 7.5 hp at 200/208 V, 10 hp at 220/230 V. Trip Class adjustable 10 and 20."},{"question":"What wire sizes does the 3RA6120-1EP32 accept?","answer":"Screw terminals accept 0.5 to 4 mm² solid or stranded, with two conductors per terminal up to 2.5 mm² each."},{"question":"What is the physical size of the 3RA6120-1EP32?","answer":"Height 170 mm, width 45 mm, depth 165 mm."},{"question":"Does the 3RA6120-1EP32 support IO-Link or AS-Interface?","answer":"No. It is a conventional hardwired starter with no IO-Link or AS-Interface protocol onboard."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA6120-1EP32","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/3RA6120-1EP32 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}}