{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA6120-1EB33","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA6120-1EB33","canonicalUrl":"https://aoctrl.com/siemens/3RA6120-1EB33","factsUrl":"https://aoctrl.com/api/mcp/products/3RA6120-1EB33","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RA6120-1EB33 compact starter, direct starter design, 15 kW at 400 V, 53 kA breaking capacity, adjustable trip class 10/20, 24 V AC/DC control, DIN rail mount.","salesMarkdown":"## Compact motor starting with integrated protection The Siemens 3RA6120-1EB33 is a SIRIUS compact starter combining a contactor and overload relay in a single 45 mm wide housing — a direct starter design per IEC 60947-6-2 for continuous operation. The adjustable trip class (Class 10 or 20) lets the overload curve match the motor start profile — Class 10 for fast-starting pumps and fans, Class 20 for high-inertia loads like conveyors or centrifuges. ## Control voltage and wiring Control voltage is 24 V AC/DC (24 V at 50 Hz, 24 V at 60 Hz, 24 V DC), which means a single 24 V supply rail powers the coil regardless of line frequency — simplifies panel wiring where mixed-frequency sites are common. Power dissipation is 3.5 W AC maximum and 3.1 W DC maximum — the thermal load on the enclosure is modest, but the 45 mm width means adjacent starters should be spaced per the derating guidelines in the product manual to stay within the -20 to +60 °C operating range. ## Mounting and environmental ratings Mounts on standard 35 mm DIN rail via screw and snap-on fastening; the 45 x 170 x 165 mm (W x H x D) footprint fits a 6-module-wide slot in most distribution boards. Shock resistance tested at 60 m/s² (6g) with 10 ms pulses, 3 shocks per axis; vibration resistance per f=4-5.8 Hz at 15 mm amplitude and f=5.8-500 Hz at 20 m/s² for 10 cycles — meets the mechanical endurance requirements for machine-mounted applications. ## Lifecycle and sourcing No stock-holding claim — availability is verified per inquiry.","metaTitle":"Siemens 3RA6120-1EB33 SIRIUS Compact Starter, 15 kW at 400 V","metaDescription":"Siemens 3RA6120-1EB33 SIRIUS compact starter, 15 kW at 400 V, 53 kA breaking capacity, adjustable Class 10/20. Active production, quoted to order against RFQ.","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":"24 ... 24 V","title":"3RA6120-1EB33","Height":"170 mm","at 400 V":"53 kA","at 50 Hz":"24 ... 24 V","at 60 Hz":"24 V","Trip Class":"CLASS 10 and 20 adjustable","Recommended":"vertical, on horizontal standard DIN rail","description":"SIRIUS Compact load feeder DOL starter 690 V 24 V AC/DC 50...60 Hz 8...32 A IP20 Connection main circuit: plug-in, without terminals Connection auxiliary circuit: screw terminal","1 Rated Value":"50 Hz","2 Rated Value":"60 Hz","at AC maximum":"3.5 W","at DC maximum":"3.1 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":"24 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":"24 V","at 500 V rated value":"1 kA","at 60 Hz rated value":"24 V","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 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":"3.5 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 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":"$408.94","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/07793818f4b5c484667c67dd0bd44fda.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=360094&mlfb=3RA6120-1EB33"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA6120-1EB33","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/3RA6120-1EB33 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}}