{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1112-4EF32-0AF0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1112-4EF32-0AF0","canonicalUrl":"https://aoctrl.com/siemens/3VA1112-4EF32-0AF0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1112-4EF32-0AF0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA series, molded case circuit breaker, 3VA1112-4EF32-0AF0, 3-pole, 125 A rated current at 40 °C, interrupting capacity 121 kA at 240 VAC, TM240 thermal-magnetic release, line protection design.","salesMarkdown":"It carries a continuous current of 125 A at 40 °C, and the thermal-magnetic release (TM240) handles overloads and short-circuits without an external trip unit. The interrupting capacity tells you where it can safely clear a fault: 121 kA at 240 VAC, 75.6 kA at 415 VAC, 52.5 kA at 440 VAC, and 11.9 kA at both 500 VAC and 690 VAC. The rated insulation voltage of 800 V gives headroom for 690 VAC systems, so it fits European 400 V and North American 480 V designs on the same frame. ## Fit and footprint for panel integration Dimensions are 130 mm height, 76.2 mm width, 70 mm depth. The 76.2 mm width is a standard 3-pole MCCB footprint. Depth of 70 mm leaves clearance behind the panel door for wiring space and auxiliary wiring. Maximum power loss is 28.1 W. The 125 A rating holds flat from 40 °C to 50 °C. Above that it derates: 122 A at 55 °C, 120 A at 60 °C, 117 A at 65 °C, 114 A at 70 °C. The operating ambient range is -25 °C to +70 °C, storage from -40 °C to +80 °C. If the breaker sits in a hot switchroom or near a furnace line, use the 70 °C figure (114 A) for sizing — not the catalog 125 A. The TM240 release is calibrated for the thermal curve; the derating is already baked into the frame design, so you don't need to manually adjust the trip setting.","metaTitle":"Siemens SENTRON 3VA1112-4EF32-0AF0 MCCB, 125 A, 121 kA at 24","metaDescription":"Siemens SENTRON 3VA1112-4EF32-0AF0 molded case circuit breaker, 125 A rated current, 3-pole, interrupting capacity 121 kA at 240 VAC. Active production. Sourced to order against RF","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":"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":"Yes","Number Of Poles":"3","Voltage Trigger":"No","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":"28.1 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Of The Supplied Basic Switch":"3VA11124EF320AA0","Design Of The Auxiliary Switch":"1 auxiliary switch + 1 trip alarm switch HQ","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","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":"3VA9988-0AB12","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=165753&mlfb=3VA1112-4EF32-0AF0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1112-4EF32-0AF0/alternatives.json"},"ai":{"faq":[{"question":"Will 3VA1112-4EF32-0AF0 drop into a panel specified around 3VA1112-5EE32-0AA0 without rewiring?","answer":"Both are 3-pole SENTRON 3VA breakers on the same 76.2 mm wide frame, so the mechanical footprint and bus-bar spacing are identical. The difference is in the release: the -4EF32-0AF0 uses a TM240 thermal-magnetic release rated 125 A, while the -5EE32-0AA0 carries an electronic release. If the panel wiring and bus bars are sized for 125 A, the swap is drop-in; if the original spec called for electronic trip functions (adjustable long-time, short-time, ground-fault), the thermal-magnetic unit lacks those adjustments."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1112-4EF32-0AF0","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/3VA1112-4EF32-0AF0 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}}