{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA2125-1BA23-0AP6","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA2125-1BA23-0AP6","canonicalUrl":"https://aoctrl.com/siemens/3RA2125-1BA23-0AP6","factsUrl":"https://aoctrl.com/api/mcp/products/3RA2125-1BA23-0AP6","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RA2125-1BA23-0AP6 non-fused motor starter, S0 size, 750 W at 400 V, Class 10, thermal bimetallic overload, 45 mm width, DIN rail snap-on.","salesMarkdown":"## What this SIRIUS motor starter delivers The 3RA2125-1BA23-0AP6: This is a Siemens SIRIUS 3RA2 non-fused direct starter — a factory-assembled combination of a contactor and a thermal-magnetic overload relay in one S0-size housing. The unit ships with the 3RT2023-1AP60 contactor and the 3RA2921-1AA00 link module pre-wired — no separate assembly of the overload relay onto the contactor. The magnetic short-circuit trip handles fault clearing; the bimetallic thermal element tracks motor heating for overload protection. ## Panel fit and mounting constraints Width is 45 mm, depth 97.1 mm, height 193.1 mm — the S0 footprint fits standard 45 mm-wide feeder slots in Siemens SIRIUS panels. Mounting position is vertical only; the upward clearance needed is 30 mm, forward 10 mm, downward 10 mm, and 9 mm at the side. Backwards clearance is zero — the housing sits flush against the backpanel. Operating temperature range is -20 to +60 °C, storage -50 to +80 °C, transport -55 to +80 °C. Pollution degree 3 means it's rated for industrial environments with conductive dust or occasional condensation — no additional enclosure derating needed for typical panel conditions. ## Motor power coverage across common voltages Rated motor power is 750 W at both 400 V and 500 V, 1 100 W at 690 V. Current draw at 480 V is 1.63 A, at 600 V is 1.72 A — these are the AC-3 values that govern contactor and overload sizing for the motor branch circuit. Operating frequency is 50 to 60 Hz; the control coil voltage range is 176–242 V at 50 Hz and 192–264 V at 60 Hz. ## Sourcing and lifecycle — active, quoted to order For a line-down spare or a new panel build, the 45 mm width and S0 size mean it drops into any existing SIRIUS feeder slot without re-drilling the backpanel. Confirm the control voltage range (176–264 V AC) matches your control transformer tap before committing the BOM line.","metaTitle":"Siemens 3RA2125-1BA23-0AP6 SIRIUS Motor Starter","metaDescription":"Siemens 3RA2125-1BA23-0AP6 SIRIUS non-fused motor starter, 750 W at 400 V, Class 10, S0 size. Active production, quoted to order. Confirm BOM fit via RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Motor Starters"],"specifications":{"Depth":"97.1 mm","Width":"45 mm","title":"3RA2125-1BA23-0AP6","Height":"193.1 mm","Upwards":"30 mm","Forwards":"10 mm","Backwards":"0 mm","Downwards":"10 mm","Trip Class":"CLASS 10","At The Side":"9 mm","Rated Value":"690 V","description":"Fuseless motor starter Direct start 600VAC Size S0 1.4-2A 220/240VAC 50/60HZ screw connection For screw mounting Or 35 mm rail-mounting Type of coordination 2 IQ = 150 KA Also full fills type Of coordination 1 1NO+1NC (MSP) 1NO+1NC (contactor)","During Storage":"-50 ... +80 °C","lifecycle_stage":"current","During Operation":"-20 ... +60 °C","During Transport":"-55 ... +80 °C","Fastening Method":"Snap-mounted to DIN rail or screw-mounted with additional push-in lug","Mounting Position":"vertical","Product Brand Name":"SIRIUS","Type Of Assignment":"2","Degree Of Pollution":"3","Product Designation":"non-fused motor starter 3RA2","Size Of Load Feeder":"S0","at 230 V rated value":"0.13 hp","at 400 V rated value":"750 W","at 480 V rated value":"1.63 A","at 50 Hz rated value":"176 ... 242 V","at 500 V rated value":"750 W","at 60 Hz rated value":"192 ... 264 V","at 600 V rated value":"1.72 A","at 690 V rated value":"1 100 W","Design Of The Product":"direct starter","at 460/480 V rated value":"0.75 hp","at 575/600 V rated value":"1 hp","Of The Supplied Contactor":"3RT2023-1AP60","Of The Supplied Link Module":"3RA2921-1AA00","Size Of The Circuit-Breaker":"S00","at AC-3 rated value maximum":"690 V","Design Of The Overload Release":"thermal (bimetallic)","Design Of The Switching Contact":"electromechanical","Operating Frequency Rated Value":"50 ... 60 Hz","Design Of The Short-Circuit Trip":"magnetic","Of The Supplied Circuit-Breakers":"3RV2011-1BA15","Product Extension Auxiliary Switch":"Yes","Surge Voltage Resistance Rated Value":"6 kV","Number Of Poles For Main Current Circuit":"3","Product Function Short Circuit Protection":"Yes","apparent holding power of magnet coil at AC":"7.2 VA","number of NC contacts for auxiliary contacts":"2","number of NO contacts for auxiliary contacts":"2","shock resistance according to IEC 60068-2-27":"6g / 11 ms","at 400 V according to IEC 60947-4-1 rated value":"153 000 A","operational current at AC-3 at 400 V rated value":"1.9 A","Type Of Electrical Connection For Main Current Circuit":"screw-type terminals","Inductive Power Factor With The Holding Power Of The Coil":"0.28","Mechanical Service Life (Operating Cycles) Of Contactor Typical":"10 000 000","Response Value Current Of Instantaneous Short-Circuit Trip Unit":"26 A","insulation voltage with degree of pollution 3 at AC rated value":"690 V","Type Of Connectable Conductor Cross-Sections For Main Contacts Stranded":"1 ... 10 mm², 2x (2.5 ... 6 mm²)","Adjustable Current Response Value Current Of The Current-Dependent Overload Release":"1.4 ... 2 A","Connectable Conductor Cross-Section For Main Contacts Finely Stranded With Core End Processing":"1 ... 6 mm²"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/22a6c304267fcec1f54e336e365a0edd.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=221536&mlfb=3RA2125-1BA23-0AP6"},"ai":{"faq":[{"question":"What compliance documentation does Siemens provide for 3RA2125-1BA23-0AP6?","answer":"The evidence does not list specific compliance certificates (UL, CSA, CE, RoHS, REACH) for this order code. As a current-production SIRIUS component, standard Siemens documentation applies — request the declaration of conformity and material compliance data at RFQ time for your jurisdiction."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA2125-1BA23-0AP6","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/3RA2125-1BA23-0AP6 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}