{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA6120-1CP33","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA6120-1CP33","canonicalUrl":"https://aoctrl.com/siemens/3RA6120-1CP33","factsUrl":"https://aoctrl.com/api/mcp/products/3RA6120-1CP33","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RA6120-1CP33 compact motor starter, direct starter design, 53 kA at 400 V breaking capacity, adjustable Trip Class 10 and 20, 110-240 V AC/DC control voltage, DIN rail mount.","salesMarkdown":"## Trip class adjustability and thermal protection The 3RA6120-1CP33: Trip Class is field-adjustable between CLASS 10 and CLASS 20 — set CLASS 10 for standard motor starts (pumps, fans) and CLASS 20 for high-inertia loads (conveyors, crushers) where the start current tail lasts longer. Two integrated LEDs give local status indication — no need to open the panel door to check the starter state. ## Mounting and environmental ratings for panel integration Rated for degree of pollution 3, meaning it handles conductive dust and condensation typical in industrial enclosures without conformal coating. Vibration resistance tested to 20 m/s² at 5.8-500 Hz and shock resistance to 6g (60 m/s²) per 3 shocks in all axes — holds up on machine-mounted panels near rotating equipment. ## Sourcing and lifecycle — current production, quoted to order The main circuit uses plug-in connections without terminals, so the base unit ships without screw terminals — order the matching terminal block separately if your panel wiring requires screw-clamp terminations. Volume pricing and lead time confirmed at RFQ against your BOM quantity — no minimum order threshold for this active line item.","metaTitle":"Siemens 3RA6120-1CP33 SIRIUS Compact Starter, 53 kA at 400 V","metaDescription":"Siemens 3RA6120-1CP33 SIRIUS compact motor starter, direct starter design, 53 kA breaking capacity at 400 V, adjustable Trip Class 10/20, 110-240 V AC/DC coil.","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":"1 500 W","at 480 V rated value":"4 A","at 50 Hz rated value":"240 V","at 500 V rated value":"3 kA","at 600 V rated value":"4 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":"0.75 hp","at 220/230 V rated value":"0.75 hp","at 460/480 V rated value":"2 hp","at 575/600 V rated value":"3 hp","at AC at 400 V rated value":"4 A","NO-Load Switching Frequency":"3 600 1/h","Of The Main Contacts Typical":"10 000 000","at AC in hot operating state":"1 W","at AC-3 at 400 V rated value":"1.5 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","Between Control And Auxiliary Circuit":"300 V","at AC in hot operating state per pole":"0.33 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":"1 ... 4 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":"$255.27","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/1ea0473e9a1f0ef74f3cbb20a35e11bc.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=464055&mlfb=3RA6120-1CP33","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RA6120-1CP33/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of the 3RA6120-1CP33 at 400 V?","answer":"It is rated 53 kA at 400 V — this is the short-circuit breaking capacity of the integrated contactor/overload combination, sufficient for most motor branch circuits without upstream fusing."},{"question":"Can the trip class be adjusted in the field?","answer":"Yes, the Trip Class is adjustable between CLASS 10 and CLASS 20 via a selector on the overload relay. CLASS 10 suits standard motor starts; CLASS 20 handles longer acceleration times for high-inertia loads."},{"question":"What control voltage does the 3RA6120-1CP33 coil accept?","answer":"Power consumption is 6 W AC or 5.1 W DC."},{"question":"What compliance documentation is available for this starter?","answer":"The starter is designed to IEC 60947-6-2 for continuous operation. Standard Siemens documentation includes the CE declaration of conformity and the product datasheet with environmental compliance (RoHS/REACH) — request these with your RFQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA6120-1CP33","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/3RA6120-1CP33 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}}