{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1125-3EF32-0DH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1125-3EF32-0DH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1125-3EF32-0DH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1125-3EF32-0DH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1125-3EF32-0DH0, molded case circuit breaker, 3-pole, 25 A at 40 °C, breaking capacity 75.6 kA at 240 V, line protection, with undervoltage release.","salesMarkdown":"The Siemens SENTRON 3VA1125-3EF32-0DH0 is a 3-pole molded case circuit breaker (MCCB) rated 25 A at 40 °C, with a breaking capacity of 75.6 kA at 240 V. The 25 A rating holds steady from 40 °C up to 50 °C, then derates to 24 A at 55–60 °C and 23 A at 65–70 °C — so if your panel ambient runs hot, you lose 1–2 A of headroom. Breaking capacity drops from 75.6 kA at 240 V to 52.5 kA at 415 V, then to 32 kA at 440 V, and further to 11.9 kA at 500 V and 690 V. The insulation voltage is rated 800 V, so the breaker is physically capable of 690 V line-to-line service — the 11.9 kA at 690 V is the limiting factor, not the insulation. ## Built-in accessories and deployment The UVR means the breaker drops out when control voltage is lost — typical for emergency-stop or safety circuits where a loss of signal should kill power. The trip indicator (mechanical flag) gives a clear visual when it's tripped, which speeds fault isolation on a panel walk-through.","metaTitle":"Siemens 3VA1125-3EF32-0DH0 SENTRON MCCB, 25A, 3-Pole, 75.6kA","metaDescription":"Siemens SENTRON 3VA1125-3EF32-0DH0 molded case circuit breaker, 25A rated at 40°C, 3-pole, 75.6kA at 240V. Active production. Quoted on request.","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":"Yes","Number Of Poles":"3","Voltage Trigger":"No","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"Yes","Design Of The Product":"Line protection","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"11 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 + 1 trip alarm switch HQ","Design Of The Auxiliary Release":"undervoltage release (UVR)","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":"3VA9608-0BB25","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":"3","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AB12","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=251410&mlfb=3VA1125-3EF32-0DH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1125-3EF32-0DH0/alternatives.json"},"ai":{"faq":[{"question":"Will 3VA1125-3EF32-0DH0 drop into a panel specified around 3VA1110-5ED36-0AC0 without rewiring?","answer":"Both are 3-pole SENTRON MCCBs on the same 3VA frame — same 70 mm depth and 76.2 mm width, so the physical footprint and mounting are identical. The auxiliary switch count differs (this one has 2 aux + 1 trip alarm; the 3VA1110-5ED36-0AC0 may have fewer), so check the control wiring for any spare aux terminals."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1125-3EF32-0DH0","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/3VA1125-3EF32-0DH0 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}}