{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA6120-1EE33","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA6120-1EE33","canonicalUrl":"https://aoctrl.com/siemens/3RA6120-1EE33","factsUrl":"https://aoctrl.com/api/mcp/products/3RA6120-1EE33","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS compact starter, direct starter design, 32 A at 400 V AC, 53 kA breaking capacity, adjustable trip class 10/20, 42-70 V AC/DC control supply.","salesMarkdown":"## What this SIRIUS compact starter delivers The Siemens 3RA6120-1EE33 is a SIRIUS compact starter in a direct-starter design, rated for continuous operation per IEC 60947-6-2. The control coil accepts 42-70 V AC/DC. Power dissipation is 3.2 W AC max and 4.2 W DC max. Trip class is adjustable between CLASS 10 and CLASS 20, letting you match the overload curve to the motor start profile — CLASS 10 for submersible pumps or high-inertia loads that accelerate quickly, CLASS 20 for longer ramp times on conveyors or crushers. The recommended orientation is vertical on a horizontal mounting rail, though any position is permitted. Dimensions are 45 mm wide by 170 mm high by 165 mm deep — a 45 mm footprint that fits a standard 4-module-wide slot in a distribution board. Main circuit connection is plug-in without terminals, so you need the matching Siemens terminal block set. The conductor cross-section accepted is 0.5 to 4 mm² solid, or 2x 0.5 to 2.5 mm² when doubling up — typical for a 32 A motor circuit on 4 mm² stranded. Vibration resistance is specified at 4 to 5.8 Hz with 15 mm amplitude, and 5.8 to 500 Hz at 20 m/s² for 10 cycles. Shock resistance is 60 m/s² (6 g) with 10 ms half-sine pulses, three shocks per axis. These ratings cover the mechanical stress typical of conveyor-adjacent panels or machine-mounted enclosures. Two LEDs on the front indicate status — one for the control voltage present, one for the overload trip condition. No IO-Link or AS-Interface protocol is built in, so communication is limited to hardwired start/stop and feedback contacts. The 3RA6120-1EE33 is a current-lifecycle part.","metaTitle":"Siemens 3RA6120-1EE33 SIRIUS Compact Starter, 32 A, 53 kA","metaDescription":"Siemens 3RA6120-1EE33 SIRIUS compact starter, 32 A rated at 400 V AC, 53 kA breaking capacity. Adjustable trip class 10/20. 42-70 V AC/DC coil.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Motor Starters"],"specifications":{"Depth":"165 mm","Solid":"0.5 ... 4 mm², 2x (0.5 ... 2.5 mm²)","Width":"45 mm","at DC":"42 ... 70 V","Height":"170 mm","at 400 V":"53 kA","at 50 Hz":"42 ... 70 V","at 60 Hz":"42 ... 70 V","Trip Class":"CLASS 10 and 20 adjustable","Recommended":"vertical, on horizontal standard mounting rail","1 Rated Value":"50 Hz","2 Rated Value":"60 Hz","at AC maximum":"3.2 W","at DC maximum":"4.2 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","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 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":"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":"4.2 W","Surge Voltage Resistance Rated Value":"6 000 V","at AWG cables for auxiliary contacts":"2x (20 ... 14)","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":"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 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,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=394370&mlfb=3RA6120-1EE33","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RA6120-1EE33/alternatives.json"},"ai":{"faq":[{"question":"What is the trip class of 3RA6120-1EE33?","answer":"The trip class is adjustable between CLASS 10 and CLASS 20, so you can set the overload relay to match the motor start duration — CLASS 10 for fast-starting loads, CLASS 20 for longer acceleration times."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA6120-1EE33","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/3RA6120-1EE33 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}}