{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA6250-1EB34","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA6250-1EB34","canonicalUrl":"https://aoctrl.com/siemens/3RA6250-1EB34","factsUrl":"https://aoctrl.com/api/mcp/products/3RA6250-1EB34","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RA6250-1EB34 compact reversing motor starter, 32 A at 480 V, 53 kA at 400 V, adjustable Class 10/20, 24 V AC/DC coil, screw terminals, DIN rail mount.","salesMarkdown":"## Reversing starter — what it does and where it fits The 3RA6250-1EB34: This is a SIRIUS compact reversing starter — a single device that combines a contactor-based reversing motor starter with an adjustable overload relay in a 170 mm x 90 mm x 165 mm footprint. It switches a three-phase motor in both forward and reverse directions and protects it against overload and phase loss. ## Trip class and overload protection — adjustable for the load The overload relay is adjustable between Class 10 and Class 20 trip curves. Class 10 suits fast-heating loads like submersible pumps or compressors that must trip quickly on stall; Class 20 gives more starting time for high-inertia loads like fans or centrifuges. Set it per the motor's acceleration time. The coil accepts 24 V AC or DC — universal control voltage that simplifies panel wiring when a single 24 VDC supply powers both the PLC and the motor controls. ## Mounting and wiring — DIN rail, screw terminals, wire ranges Mounts on standard 35 mm DIN rail via the screw-and-snap-on fastening method. No special tools beyond a screwdriver. Operating temperature range is -20 to +60 °C, storage and transport -55 to +80 °C. Pollution degree 3 means it is rated for the conductive-dust and humidity conditions typical in industrial control panels. Power dissipation is 3.5 W max on AC and 3.1 W max on DC — minimal heat load inside the enclosure, so no special ventilation is needed for a single unit. ## Shock and vibration — rated for machine-mounted service Withstands 6g shock (60 m/s²) for 10 ms, three shocks per axis, and vibration of 20 m/s² from 5.8 to 500 Hz. This qualifies it for direct mounting on machinery or conveyors without a separate isolation panel. Three LEDs on the front indicate status — typically run, overload trip, and fault. No IO-Link or AS-Interface onboard; this is a hardwired starter for conventional control.","metaTitle":"Siemens 3RA6250-1EB34 SIRIUS Reversing Starter, 32 A, 53 kA","metaDescription":"Siemens 3RA6250-1EB34 SIRIUS compact reversing motor starter, 32 A at 480 V, 53 kA SCCR at 400 V, adjustable Class 10/20, 24 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":"90 mm","at DC":"24 ... 24 V","title":"3RA6250-1EB34","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 mounting rail","description":"SIRIUS Compact load feeder Reversing starter 400 V 24 V AC/DC 50...60 Hz 8...32 A IP20 Connection main circuit: Screw terminal Connection control circuit: plug-in, without terminals","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":"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":"15 000 W","at 480 V rated value":"32 A","at 50 Hz rated value":"24 V","at 60 Hz rated value":"24 V","AS-Interface protocol":"No","Design Of The Product":"reversing starter","For Main Current Circuit":"screw-type 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":"plug-in without 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 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":"0","number of NO contacts for auxiliary contacts":"2","operating voltage at AC-3 rated value maximum":"400 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,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/429a60d8be844f4adb791fd1276bd274.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=92012&mlfb=3RA6250-1EB34"},"ai":{"faq":[{"question":"What is the short-circuit breaking capacity of 3RA6250-1EB34?","answer":"53 kA at 400 V — this is the SCCR the starter can withstand without damage during a fault, which drives the upstream fuse or breaker coordination."},{"question":"What wire sizes does 3RA6250-1EB34 accept?","answer":"All are screw-type connections."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA6250-1EB34","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/3RA6250-1EB34 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}}