{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1125-4EF32-0JC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1125-4EF32-0JC0","canonicalUrl":"https://aoctrl.com/siemens/3VA1125-4EF32-0JC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1125-4EF32-0JC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1125-4EF32-0JC0, 3-pole molded case circuit breaker, 25 A at 40 °C, interrupting capacity 121 kA at 240 V, line protection, shunt trip (STL), 70 mm depth.","salesMarkdown":"The Siemens 3VA1125-4EF32-0JC0 is a 3-pole SENTRON molded case circuit breaker rated 25 A continuous at 40 °C, with full thermal current up to 50 °C before derating begins at 55 °C (24 A) and 65 °C (23 A). That means it holds its full rating across typical North American and European panel ambient conditions — no headroom lost until the enclosure runs hot. Interrupting capacity is 121 kA at 240 V, 75.6 kA at 415 V, and still 11.9 kA at 690 V. ## Line protection design — what it does and doesn't do Maximum power loss is 8.5 W, so thermal management in a dense panel is straightforward — no forced cooling required for this single breaker. Mounts on DIN rail or direct panel. The 70 mm depth leaves clearance for standard 80 mm deep enclosures with wiring gutters. No trip indicator on the front face — status is read from the handle position or the auxiliary switches.","metaTitle":"Siemens 3VA1125-4EF32-0JC0 SENTRON MCCB, 25 A, 121 kA at 240","metaDescription":"Siemens 3VA1125-4EF32-0JC0 SENTRON molded case circuit breaker, 25 A rated, 121 kA interrupting at 240 V. 3-pole, line protection, shunt trip. Active production, sourced to order.","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":"121 kA","at 415 V":"75.6 kA","at 440 V":"52.5 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":"3VA11254EF320AA0","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":"3VA9688-0BL32","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":"S","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=148498&mlfb=3VA1125-4EF32-0JC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1125-4EF32-0JC0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1125-4EF32-0JC0 and how is it quoted?","answer":"This part is sourced through independent distribution and quoted to order against an RFQ. Availability and current pricing are confirmed at quote time — no stock figures or lead-time numbers are published here."},{"question":"What is the interrupting capacity of 3VA1125-4EF32-0JC0 at 415 V?","answer":"75.6 kA at 415 V, which covers most European industrial distribution fault levels without requiring a current-limiting upstream fuse."},{"question":"Will 3VA1125-4EF32-0JC0 drop into a panel specified around 3VA1110-5ED36-0AC0?","answer":"Both are 3-pole SENTRON MCCBs with the same 70 mm depth and 76.2 mm width, so the mechanical fit is identical. The functional difference is rating — the 3VA1125-4EF32-0JC0 carries 25 A continuous versus the 3VA1110 frame's lower rating, and interrupting capacities differ. Verify the fault-current study before swapping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1125-4EF32-0JC0","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/3VA1125-4EF32-0JC0 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}}