{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA6250-1DB32","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA6250-1DB32","canonicalUrl":"https://aoctrl.com/siemens/3RA6250-1DB32","factsUrl":"https://aoctrl.com/api/mcp/products/3RA6250-1DB32","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS compact reversing starter, 3RA6250-1DB32, 53 kA breaking capacity at 400 V, adjustable trip class 10/20, screw-type terminals, DIN rail mount.","salesMarkdown":"The Siemens SIRIUS 3RA6250-1DB32 is a compact reversing starter — a single device that combines a reversing contactor pair and overload relay in one 90 mm wide housing, rated for continuous operation per IEC 60947-6-2. For a panel builder, that means it can be placed on a supply with a prospective short-circuit current up to 53 kA without needing a separate current-limiting fuse or breaker ahead of it, provided the upstream device is coordinated. The overload relay section offers adjustable trip class 10 and 20, so you can match the thermal curve to the motor start profile — class 10 for fast-starting pumps or fans, class 20 for high-inertia loads like centrifuges or crushers that need a longer acceleration ramp without nuisance tripping. At 90 mm wide, 170 mm high, and 165 mm deep, this reversing starter occupies a single DIN-rail slot width typical of a four-pole contactor footprint. The screw-type terminals on the main circuit accept solid conductors from 0.5 to 4 mm², or two conductors of 0.5 to 2.5 mm² each — useful for daisy-chaining control wiring or paralleling power feeds without extra terminal blocks. Mounting position is any orientation, though the manufacturer recommends vertical on a horizontal standard DIN rail for optimal heat dissipation. The device is rated for continuous operation, so no derating for duty cycle is needed in normal motor-starting applications. Three integrated LEDs provide local status indication — useful during commissioning or fault finding without needing a multimeter on the terminals. It is rated for shock resistance of 60 m/s² (6 g) over 10 ms per three shocks in all axes, and vibration resistance from 4 to 5.8 Hz at 15 mm amplitude, then 5.8 to 500 Hz at 20 m/s² for 10 cycles — figures that suit it for installation on machinery or in mobile equipment where mechanical stress is present.","metaTitle":"Siemens 3RA6250-1DB32 SIRIUS Compact Reversing Starter, 53 k","metaDescription":"Siemens SIRIUS 3RA6250-1DB32 compact reversing starter. 53 kA breaking capacity at 400 V, adjustable trip class 10/20, screw terminals, DIN rail mount. Current lifecycle stage, sou","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":"5 500 W","at 480 V rated value":"12 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":"12 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":"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":"2.9 W","Surge Voltage Resistance Rated Value":"6 000 V","Between Control And Auxiliary Circuit":"300 V","at AC in hot operating state per pole":"0.6 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":"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":"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":"$300.99","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/6eb0a29528fb9a0cae43cadb6579635c.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=151286&mlfb=3RA6250-1DB32","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RA6250-1DB32/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings for this reversing starter?","answer":"The key ratings are 53 kA breaking capacity at 400 V, adjustable trip class 10 and 20, and a rated power of 5.5 kW at 400 V. It accepts wire sizes from 0.5 to 4 mm² on screw-type terminals."},{"question":"What is the physical size of the 3RA6250-1DB32?","answer":"It measures 90 mm wide, 170 mm high, and 165 mm deep, designed for DIN-rail mounting in any orientation."},{"question":"What compliance documentation is available for this part?","answer":"The part is designed to IEC 60947-6-2 for continuous operation. Specific compliance documentation (RoHS, REACH, UL, CE) should be requested with the RFQ, as the evidence does not list individual certifications."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA6250-1DB32","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/3RA6250-1DB32 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}}