{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA6120-2EP33","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA6120-2EP33","canonicalUrl":"https://aoctrl.com/siemens/3RA6120-2EP33","factsUrl":"https://aoctrl.com/api/mcp/products/3RA6120-2EP33","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RA6120-2EP33 compact motor starter, direct starter design, 15 kW at 400 V, 53 kA breaking capacity, adjustable trip Class 10 and 20, 110-240 V AC/DC control voltage, screw and snap-on DIN rail mounting.","salesMarkdown":"The 3RA6120-2EP33 is a SIRIUS compact starter — a direct starter design that integrates the contactor and overload relay into one 45 mm wide housing, saving DIN rail space over a two-device build. The adjustable trip class (Class 10 or 20) lets you match the overload curve to the motor's starting profile — Class 10 for fast-ramping pumps and fans, Class 20 for high-inertia loads like conveyors or crushers that need a longer start time. Control voltage is 110-240 V AC/DC, so it works across both North American 120 V and European 230 V control circuits without a separate transformer tap. The main circuit connects via plug-in terminals (no screw terminals on the power side), which speeds wiring and reduces the chance of a loose connection under thermal cycling. Solid wire capacity is 2x 0.25 to 1.5 mm² per clamp — fine for the control wiring but undersized for the main power; expect to use the plug-in terminals for the motor circuit and separate ring lugs for the line side. ## Environmental and mechanical endurance Operates from -20 to +60 °C ambient, with storage and transport range of -55 to +80 °C — suitable for unheated plant floors and shipping in non-climate-controlled trucks. Shock rated at 60 m/s² (6g) for 10 ms, three shocks per axis; vibration tested at 4-5.8 Hz with 15 mm displacement and 5.8-500 Hz at 20 m/s² for 10 cycles — it holds up on a conveyor drive or a compressor skid without nuisance trips. No direct second-source cross-reference exists — the 6ES7517-3FP00-0AB0 is a Siemens PLC CPU, not a motor starter, and will not drop into this panel position without a complete rewire and control redesign.","metaTitle":"Siemens 3RA6120-2EP33 SIRIUS Compact Starter, 15 kW at 400 V","metaDescription":"Siemens 3RA6120-2EP33 SIRIUS compact motor starter, 15 kW at 400 V, 53 kA breaking capacity, adjustable Class 10/20. Active production, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Motor Starters"],"specifications":{"Depth":"165 mm","Solid":"2x (0.25 ... 1.5 mm²)","Width":"45 mm","at DC":"110 ... 240 V","title":"3RA6120-2EP33","Height":"191 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 mounting rail","description":"SIRIUS Compact load feeder DOL starter 690 V 110...240 V AC/DC 50...60 Hz 8...32 A IP20 Connection main circuit: plug-in, without terminals Connection auxiliary circuit: Spring-type terminal","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":"plug-in without 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 AWG cables for main contacts":"2x (14 ... 10), 1x 8","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":"spring-loaded 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","at AWG cables for auxiliary contacts":"2x (24 ... 16)","Between Control And Auxiliary Circuit":"300 V","at AC in hot operating state per pole":"1.8 W","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":"2x (0.25 ... 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 %","Finely Stranded Without Core End Processing":"2x (0.25 ... 1.5 mm²)","Formula For Breaking Capacity Limit Current":"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":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/98c8ae03faaaeb1e961d7da722f4679c.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=64633&mlfb=3RA6120-2EP33"},"ai":{"faq":[{"question":"What does the adjustable trip class (Class 10/20) mean for motor selection?","answer":"The adjustable trip class lets you match the overload relay curve to the motor's starting time. Class 10 trips faster (suited for pumps and fans with short start times), while Class 20 allows longer starts for high-inertia loads like conveyors or crushers."},{"question":"What control voltage does the 3RA6120-2EP33 accept?","answer":"It accepts 110-240 V AC/DC, covering both 120 V and 230 V control circuits without needing a separate transformer tap."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA6120-2EP33","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/3RA6120-2EP33 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}}