{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA6120-1DP33","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA6120-1DP33","canonicalUrl":"https://aoctrl.com/siemens/3RA6120-1DP33","factsUrl":"https://aoctrl.com/api/mcp/products/3RA6120-1DP33","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RA6120-1DP33 compact motor starter, direct starter design, 5.5 kW at 400 V, 53 kA interrupting capacity, adjustable Trip Class 10/20, 45 mm wide, screw and snap-on mounting.","salesMarkdown":"## Panel space and mounting — 45 mm wide, 165 mm deep The 3RA6120-1DP33 occupies 45 mm width on standard DIN rail — three 9 mm module slots — with a depth of 165 mm and height of 170 mm. That depth matters when you're fitting it into a 200 mm deep enclosure; you've got 35 mm clearance behind the rail for wiring and the plug-in main circuit connector. Mounting position is unrestricted — vertical, horizontal, or any angle — and the screw-and-snap-on fastening means you can pre-wire the harness and snap the starter onto the rail without removing terminals. ## Interrupting capacity and motor protection — 53 kA at 400 V Rated 53 kA at 400 V, this starter handles high-fault panels without needing a separate upstream fuse or breaker for SCCR compliance. At 500 V it's still rated 3 kA, and at 690 V the same 3 kA — so it's usable on 400 V systems with high available fault current, but on 690 V systems you'll need to verify the fault level at the panel. The adjustable Trip Class (10 and 20) lets you match the thermal curve to the motor start profile — Class 10 for fast-starting pumps and fans, Class 20 for high-inertia loads like conveyors or centrifuges that need a longer acceleration ramp without nuisance tripping. ## Motor power ratings across voltages The 12 A continuous rating at 480/600 V means it's also a fit for 5 hp motors on 480 V North American systems. ## Control voltage and coil consumption — universal AC/DC 110-240 V That universal input simplifies panel wiring — one control transformer covers both the starter and the PLC power supply, and the low coil draw keeps the control transformer sizing modest. ## Wiring terminals — solid and stranded capacity Accepts solid wire 0.5-4 mm² (single) or 2x 0.5-2.5 mm² (two conductors per clamp). That's enough for 4 mm² supply tails on a 5.5 kW motor circuit, and the dual-conductor rating lets you daisy-chain the supply through multiple starters without extra terminal blocks. ## Environmental ratings — industrial panel ready Rated for continuous operation per IEC 60947-6-2, pollution degree 3, operating temperature -20 to +60 °C, and storage/transport -55 to +80 °C. Shock resistance 6g (10 ms, 3 shocks per axis) and vibration resistance to 20 m/s² at 5.8-500 Hz — it survives machine-mount vibration on conveyors and pumps without loosening.","metaTitle":"Siemens 3RA6120-1DP33 SIRIUS Compact Starter","metaDescription":"Siemens 3RA6120-1DP33 SIRIUS compact motor starter, 5.5 kW at 400 V, 53 kA interrupting capacity, adjustable Trip Class 10/20, 45 mm wide.","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":"6 W","at DC maximum":"5.1 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":"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":"5 500 W","at 480 V rated value":"12 A","at 50 Hz rated value":"240 V","at 500 V rated value":"3 kA","at 600 V rated value":"12 A","at 690 V rated value":"3 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":"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","at AC at 400 V rated value":"12 A","NO-Load Switching Frequency":"3 600 1/h","Of The Main Contacts Typical":"10 000 000","at AC in hot operating state":"1.8 W","at AC-3 at 400 V rated value":"5.5 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":"6 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":"0.6 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":"3 ... 12 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":"$298.45","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/ced9e907bca5d5b344300e577f05457b.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=429522&mlfb=3RA6120-1DP33","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RA6120-1DP33/alternatives.json"},"ai":{"faq":[{"question":"What is the interrupting capacity of 3RA6120-1DP33 at 400 V?","answer":"Rated 53 kA at 400 V. This means it's suitable for high-fault panels on 400 V systems but requires fault-level verification on higher voltage systems."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA6120-1DP33","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/3RA6120-1DP33 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}}