{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA6250-0CB30","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA6250-0CB30","canonicalUrl":"https://aoctrl.com/siemens/3RA6250-0CB30","factsUrl":"https://aoctrl.com/api/mcp/products/3RA6250-0CB30","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RA6250-0CB30 compact reversing starter, 53 kA at 400 V, adjustable trip class 10/20, 165 x 90 x 170 mm, screw and snap-on DIN rail mounting.","salesMarkdown":"## Breaking capacity and trip class — what they mean for the line The 3RA6250-0CB30: Rated 53 kA at 400 V — this is the short-circuit breaking capacity the starter can safely interrupt without upstream fuses or a larger MCCB taking the fault. It meets the SCCR requirement for most industrial distribution panels up to that fault level. Trip class is adjustable between CLASS 10 and CLASS 20 (per IEC 60947-6-2). CLASS 10 trips faster on overload — better for protecting motors with short thermal time constants (e.g., pumps, fans). CLASS 20 allows longer starting current duration, useful for high-inertia loads like conveyors or crushers. The adjustment is a simple selector on the unit, no separate heater element needed. ## Panel fit and mounting — DIN rail, screw, or snap-on Footprint is 165 mm deep, 90 mm wide, 170 mm high — fits a standard DIN-rail enclosure bay. Mounting is screw and snap-on onto horizontal standard DIN rail; the reversing starter can be oriented vertically or in any position, giving layout flexibility in tight cabinets. The main current circuit uses a plug-in connection without terminals — the power wiring is through a separate base or adapter, not directly onto the device. This speeds replacement: swap the starter without disturbing the line-side wiring. ## Environmental ruggedness — shock, vibration, temperature range Rated for continuous operation per IEC 60947-6-2, with an operating temperature range of -20 to +60 °C and storage/transport from -55 to +80 °C. Shock resistance is 60 m/s² (6 g) for 10 ms, three shocks per axis. Vibration resistance covers 4–5.8 Hz at 15 mm amplitude, and 5.8–500 Hz at 20 m/s², 10 cycles — suitable for machine-mounted applications near rotating or reciprocating equipment. Degree of pollution 3 — the unit tolerates conductive dust and occasional condensation, typical for industrial control panels not in sealed cleanrooms.","metaTitle":"Siemens 3RA6250-0CB30 SIRIUS Reversing Starter","metaDescription":"Siemens 3RA6250-0CB30 SIRIUS compact reversing starter, 53 kA breaking capacity at 400 V, adjustable trip class 10/20.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Motor Starters"],"specifications":{"Depth":"165 mm","Width":"90 mm","at DC":"24 ... 24 V","title":"3RA6250-0CB30","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","description":"SIRIUS Compact load feeder Reversing starter 690 V 24 V AC/DC 50...60 Hz 1...4 A IP20 Connection main circuit: plug-in, without terminals Connection control circuit: plug-in, without terminals","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":"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":"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":"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":"0.33 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","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":"$430.53","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/1f4a25ba620abf9d608b4398c0abb157.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=11047&mlfb=3RA6250-0CB30"},"ai":{"faq":[{"question":"What is the breaking capacity of 3RA6250-0CB30 at 400 V?","answer":"The breaking capacity is 53 kA at 400 V. This is the short-circuit current the reversing starter can safely interrupt at that voltage level."},{"question":"What trip classes does the 3RA6250-0CB30 support?","answer":"The trip class is adjustable between CLASS 10 and CLASS 20. CLASS 10 is for fast overload protection; CLASS 20 allows longer starting current for high-inertia loads."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA6250-0CB30","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/3RA6250-0CB30 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}}