{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1125-3EF32-0KC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1125-3EF32-0KC0","canonicalUrl":"https://aoctrl.com/siemens/3VA1125-3EF32-0KC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1125-3EF32-0KC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1125-3EF32-0KC0, molded case circuit breaker, 3-pole, 25 A rated current at 40 °C, breaking capacity 75.6 kA at 240 V, 70 mm depth, 76.2 mm width, 130 mm height.","salesMarkdown":"The key spec for a sourcing decision is the breaking capacity: 75.6 kA at 240 V, 52.5 kA at 415 V, and 32 kA at 440 V — that's the fault current it can safely interrupt without welding contacts or venting plasma. That means it's ready for remote tripping and status feedback out of the box — no extra wiring of add-on modules on the bench. The 76.2 mm width and 70 mm depth fit the standard SENTRON 3VA panel footprint; if you're swapping into an existing 3VA cutout, the bus-bar centers and DIN-rail clip pattern are identical across the family. Power loss is 8.5 W maximum, so thermal rise inside a sealed enclosure is manageable with standard venting.","metaTitle":"Siemens 3VA1125-3EF32-0KC0 SENTRON MCCB, 25 A, 3-Pole, 75.6","metaDescription":"Siemens 3VA1125-3EF32-0KC0 SENTRON molded case circuit breaker, 25 A rated at 40 °C, 3-pole, breaking capacity 75.6 kA at 240 V. Active production, sourced to order. Request a quot","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"70 mm","Width":"76.2 mm","Height":"130 mm","Maximum":"0 A","Minimum":"0 A","at 240 V":"75.6 kA","at 415 V":"52.5 kA","at 440 V":"32 kA","at 500 V":"11.9 kA","at 690 V":"11.9 kA","at 40 °C":"25 A","at 45 °C":"25 A","at 50 °C":"25 A","at 55 °C":"24 A","at 60 °C":"24 A","at 65 °C":"23 A","at 70 °C":"23 A","Depth [In]":"2.76 in","Width [In]":"3 in","Height [In]":"5.12 in","Trip Indicator":"No","Number Of Poles":"3","Voltage Trigger":"Yes","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"No","Design Of The Product":"Line protection","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"8.5 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Of The Supplied Basic Switch":"3VA11253EF320AA0","Design Of The Auxiliary Switch":"2 auxiliary switches HQ","Design Of The Auxiliary Release":"shunt trip (STL)","Ground-Fault Monitoring Version":"Without","Insulation Voltage / Rated Value":"800 V","Design Of The Overcurrent Release":"TM240","Design Of Short-Circuit Protection":"For switching power values in DC networks, see the 3VA molded case circuit breaker device manual; link to be found under Service & Support in the last chapter","protection class IP / on the front":"IP40","Of The Integrated Auxiliary Trip Unit":"3VA9688-0BL33","Product Function / Grounding Protection":"No","operating voltage / at AC / rated value":"690 V","operating voltage / at DC / rated value":"500 V","reference code / according to IEC 81346-2":"Q","Product Extension / Optional / Motor Drive":"Yes","Protection Function Of The Overcurrent Release":"LI","number of CO contacts / for auxiliary contacts":"2","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AA12","Switching Capacity Class Of The Circuit Breaker":"N","Mechanical Service Life (Operating Cycles) / Typical":"20 000","Type Of Electrical Connection / For Main Current Circuit":"nut keeper kit on both ends","Arrangement Of Electrical Connectors / For Main Current Circuit":"Front terminal"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=391995&mlfb=3VA1125-3EF32-0KC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1125-3EF32-0KC0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1125-3EF32-0KC0 and how is it quoted?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock count or price is published here."},{"question":"What is the breaking capacity of 3VA1125-3EF32-0KC0 at different voltages?","answer":"The breaking capacity is 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 11.9 kA at both 500 V and 690 V. These are the maximum fault currents it can safely interrupt at those voltage levels."},{"question":"Will 3VA1125-3EF32-0KC0 fit a panel designed for 3VA1110-5ED36-0AC0?","answer":"Physically yes — both are SENTRON 3VA frame sizes with the same 76.2 mm width and 70 mm depth. But the 25 A rating and shunt trip release make this a different protection device, not a functional equivalent. Do not substitute without reviewing the coordination study."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1125-3EF32-0KC0","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/3VA1125-3EF32-0KC0 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}}