{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA6250-1BP32","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA6250-1BP32","canonicalUrl":"https://aoctrl.com/siemens/3RA6250-1BP32","factsUrl":"https://aoctrl.com/api/mcp/products/3RA6250-1BP32","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS compact reversing starter, 3RA6250-1BP32, 53 kA at 400 V AC, adjustable trip Class 10/20, screw-type terminals, snap-on DIN rail mount.","salesMarkdown":"The Siemens SIRIUS 3RA6250-1BP32 is a compact reversing starter — a single device that handles forward/reverse motor control in one package, saving panel space over two separate contactors with mechanical interlocking. It's rated for continuous operation per IEC 60947-6-2, so it's built for sustained duty on conveyors, pumps, or any reversing load that runs for hours. It means this starter can sit downstream of a transformer or a high-capacity bus without needing a separate current-limiting fuse or breaker upstream, as long as the SCCR of the whole assembly is coordinated. Trip class is adjustable between Class 10 and Class 20. Class 10 gives faster overload protection for pumps and compressors that shouldn't coast long under fault; Class 20 allows a longer start for high-inertia loads like fans or centrifuges. You set it on the device, not by swapping heaters. ## Mounting and wiring — what fits in the panel The screw terminals accept solid wire from 0.5 mm² up to 4 mm², or two conductors of 0.5 to 2.5 mm² in the same clamp — useful for daisy-chaining control power or paralleling a sense wire without a separate terminal block. Dimensions are 170 mm high by 90 mm wide by 165 mm deep. That depth is the critical one for shallow enclosures — check your gland plate clearance if the panel is less than 180 mm deep. Mounting position is any orientation, but the recommended installation is vertical on a horizontal DIN rail for natural convection cooling. Three LEDs on the front give local status indication — helps a field tech see at a glance whether the starter is powered, tripped, or in a fault state without breaking out a meter. ## Environment and lifecycle Vibration resistance is tested to 20 m/s² at 5.8 to 500 Hz, and shock to 60 m/s² (6 g) — it'll hold up on a machine base or a conveyor frame, not just a climate-controlled control room. ## Power and control voltage Control supply is AC/DC, 110 to 240 V at 50 or 60 Hz. That covers the common control voltages in most industrial plants — 120 V AC and 240 V AC single-phase, plus 110 V DC and 220 V DC. Power consumption is low: 6 W AC maximum, 5.1 W DC maximum, so it won't heat up a crowded panel. Motor power rating at 400 V is 370 W (0.5 hp). At 460/480 V it's also 0.5 hp, with a full-load current of 1.25 A. That's a small motor — think agitators, small conveyors, valve actuators, not a 10 hp pump.","metaTitle":"Siemens SIRIUS 3RA6250-1BP32 reversing starter, 53 kA at 400","metaDescription":"Siemens SIRIUS compact reversing starter 3RA6250-1BP32, 53 kA breaking capacity at 400 V AC, adjustable Class 10/20, screw terminals, current lifecycle stage.","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":"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 mounting 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":"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":"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":"370 W","at 480 V rated value":"1.25 A","at 50 Hz rated value":"240 V","at 500 V rated value":"3 kA","at 600 V rated value":"1.25 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 460/480 V rated value":"0.5 hp","at 575/600 V rated value":"0.5 hp","at AC at 400 V rated value":"1.25 A","NO-Load Switching Frequency":"3 600 1/h","Of The Main Contacts Typical":"10 000 000","at AC in hot operating state":"0.1 W","at AC-3 at 400 V rated value":"0.37 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 (16 ... 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":"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":"0.03 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":"38.4 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":"32 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":"0.32 ... 1.25 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":"$422.91 – $1,235.60","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/7213a35873de87e82ea4090996bbfd5b.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=492051&mlfb=3RA6250-1BP32","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RA6250-1BP32/alternatives.json"},"ai":{"faq":[{"question":"What wire sizes does the 3RA6250-1BP32 accept?","answer":"The screw terminals accept solid wire from 0.5 to 4 mm², or two conductors of 0.5 to 2.5 mm² in the same clamp."},{"question":"What is the depth of the 3RA6250-1BP32?","answer":"The depth is 165 mm. This is the dimension to check for shallow enclosures or tight gland plate clearance."},{"question":"What control voltage does the 3RA6250-1BP32 use?","answer":"It accepts AC or DC control voltage from 110 to 240 V, at 50 or 60 Hz."},{"question":"What is the breaking capacity of the 3RA6250-1BP32?","answer":"The rated breaking capacity is 53 kA at 400 V AC. This is the maximum fault current the starter can safely interrupt at that voltage."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA6250-1BP32","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/3RA6250-1BP32 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}}