{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA6250-1CB32","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA6250-1CB32","canonicalUrl":"https://aoctrl.com/siemens/3RA6250-1CB32","factsUrl":"https://aoctrl.com/api/mcp/products/3RA6250-1CB32","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RA6250-1CB32, compact reversing starter, 1.5 kW at 400 V, 53 kA breaking capacity, adjustable Trip Class 10/20, screw terminals, snap-on DIN rail mounting.","salesMarkdown":"The Siemens 3RA6250-1CB32 is a SIRIUS compact reversing starter — a single device that combines a reversing contactor and a thermal overload relay in one 90 mm wide package. It's rated for 1.5 kW at 400 V and carries a 53 kA breaking capacity at 400 V, so it handles motor faults without the upstream breaker needing to clear them. The trip class is adjustable between Class 10 and Class 20, which means you set it for the motor's starting characteristic — faster for pumps, slower for high-inertia loads like fans or conveyors. At 90 mm wide, 170 mm tall, and 165 mm deep, it fits a standard motor starter slot in a SIRIUS lineup. The screw-type terminals on the main circuit accept solid wire from 0.5 to 4 mm², or two conductors of 0.5 to 2.5 mm² — enough for the motor leads on a 1.5 kW drive. ## Tough Enough for the Route Out here in the grease, gear takes a beating. This starter is rated for continuous operation per IEC 60947-6-2, and it's built to handle the vibration on a motor circuit — tested at 4 to 5.8 Hz with 15 mm displacement, and up to 500 Hz at 20 m/s². Shock resistance is 60 m/s² (6g) for 10 ms in all axes. That means it'll live on a conveyor line or a pump skid without crapping out.","metaTitle":"Siemens 3RA6250-1CB32 SIRIUS Compact Reversing Starter, 1.5","metaDescription":"Siemens 3RA6250-1CB32 SIRIUS compact reversing starter, 1.5 kW at 400 V, 53 kA breaking capacity, adjustable Class 10/20. Current production. Snap-on DIN rail mount.","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":"90 mm","at DC":"24 ... 24 V","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","1 Rated Value":"50 Hz","2 Rated Value":"60 Hz","at AC maximum":"2.8 W","at DC maximum":"2.9 W","During Storage":"-55 ... +80 °C","number of LEDs":"3","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":"1 500 W","at 480 V rated value":"4 A","at 50 Hz rated value":"24 V","at 500 V rated value":"3 kA","at 60 Hz rated value":"24 V","at 600 V rated value":"4 A","at 690 V rated value":"3 kA","AS-Interface protocol":"No","Design Of The Product":"reversing starter","For Main Current Circuit":"screw-type 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":"2.9 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":"0.33 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":"0","number of NO contacts for auxiliary contacts":"2","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":"$1,234.26","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=99405&mlfb=3RA6250-1CB32","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RA6250-1CB32/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings for the 3RA6250-1CB32?","answer":"It is rated for 1.5 kW at 400 V, with a breaking capacity of 53 kA at 400 V. The trip class is adjustable between Class 10 and Class 20. It operates on 24 V AC/DC control voltage."},{"question":"What wire sizes does the 3RA6250-1CB32 accept?","answer":"The screw-type terminals accept solid wire from 0.5 to 4 mm², or two conductors of 0.5 to 2.5 mm²."},{"question":"What is the physical size of the 3RA6250-1CB32?","answer":"It measures 90 mm wide, 170 mm tall, and 165 mm deep."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA6250-1CB32","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/3RA6250-1CB32 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}}