{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1112-3EF32-0DA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1112-3EF32-0DA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1112-3EF32-0DA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1112-3EF32-0DA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1112-3EF32-0DA0, 3-pole molded case circuit breaker, 125 A rated at 40 °C, 75.6 kA breaking capacity at 240 V, with undervoltage release, line protection design.","salesMarkdown":"## MCCB for line protection with undervoltage release Rated 125 A at 40 °C and carrying 75.6 kA breaking capacity at 240 V, this MCCB handles high fault currents typical of industrial main feeders or large sub-distribution boards. Breaking capacity drops with system voltage: 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. Current rating holds at 125 A up to 50 °C ambient, then derates linearly: 122 A at 55 °C, 120 A at 60 °C, 117 A at 65 °C, and 114 A at 70 °C. Maximum power loss is 30.6 W — account for this in enclosure thermal calculations, especially in high-density panels. Dimensions are 130 mm height, 76.2 mm width (3 inches), and 70 mm depth. The 3-pole width is standard for this current class — verify busbar or cable lug spacing against the existing panel layout.","metaTitle":"Siemens 3VA1112-3EF32-0DA0 SENTRON MCCB, 125A, 3-Pole, UVR","metaDescription":"Siemens SENTRON 3VA1112-3EF32-0DA0 molded case circuit breaker. 125A rated at 40°C, 75.6kA at 240V. 3-pole, line protection, undervoltage release. Active production. Available to q","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":"125 A","at 45 °C":"125 A","at 50 °C":"125 A","at 55 °C":"122 A","at 60 °C":"120 A","at 65 °C":"117 A","at 70 °C":"114 A","Depth [In]":"2.76 in","Width [In]":"3 in","Height [In]":"5.12 in","Trip Indicator":"No","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":"30.6 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Of The Supplied Basic Switch":"3VA11123EF320AA0","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":"0","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=42472&mlfb=3VA1112-3EF32-0DA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1112-3EF32-0DA0/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 3VA1112-3EF32-0DA0 at 240 V?","answer":"The breaking capacity is 75.6 kA at 240 V. At 415 V it is 52.5 kA, at 440 V it is 32 kA, and at 500 V and 690 V it is 11.9 kA."},{"question":"What does the undervoltage release (UVR) do on this breaker?","answer":"The undervoltage release trips the breaker when the supply voltage drops below a set threshold, preventing automatic re-acceleration of motors after a voltage dip or outage. It is a built-in auxiliary release on this variant."},{"question":"Where can I buy 3VA1112-3EF32-0DA0?","answer":"This MCCB is sourced and quoted to order through independent distribution. Submit an RFQ for current availability and pricing — confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1112-3EF32-0DA0","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/3VA1112-3EF32-0DA0 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}}