{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1112-4EF36-0AF0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1112-4EF36-0AF0","canonicalUrl":"https://aoctrl.com/siemens/3VA1112-4EF36-0AF0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1112-4EF36-0AF0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1 molded case circuit breaker, 3VA1112-4EF36-0AF0, 3-pole, 125 A at 40 °C, 121 kA breaking capacity at 240 V AC, TM240 thermal-magnetic release, line protection design.","salesMarkdown":"Breaking capacity is the headline number for this class: 121 kA at 240 V AC, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at both 500 V and 690 V. This is a straightforward line-protection MCCB, not a multifunction power breaker. The 3VA1 family uses a common footprint across current ratings, so swapping a 100 A unit for this 125 A unit does not require re-drilling the backplate. ## Thermal performance across the panel ambient range At 55 °C it drops to 122 A, at 60 °C to 120 A, at 65 °C to 117 A, and at 70 °C to 114 A. The derating curve is gentle — about 0.2 A per °C above 50 °C — so a panel running at 60 °C ambient still gets 96% of the nameplate rating. ## Environmental limits","metaTitle":"Siemens 3VA1112-4EF36-0AF0 SENTRON MCCB, 125A, 121kA at 240V","metaDescription":"Siemens 3VA1112-4EF36-0AF0 SENTRON 3-pole molded case circuit breaker, 125A rated at 40°C, 121 kA breaking capacity at 240 VAC. 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":"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":"3VA11124EF360AA0","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":"box terminal on both sides","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=398777&mlfb=3VA1112-4EF36-0AF0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1112-4EF36-0AF0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1112-4EF36-0AF0 and how do I get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Submit an RFQ for current availability and pricing — confirmed at quote time, not a published figure."},{"question":"What is 3VA1112-4EF36-0AF0's listed depth (70 mm) on this component line?","answer":"The listed depth is 70 mm (2.76 in). This is the body depth excluding any protruding handle or terminal covers."},{"question":"What is 3VA1112-4EF36-0AF0's listed width (76.2 mm) on this component line?","answer":"The listed width is 76.2 mm (3 in), standard for a 3-pole MCCB in this frame size."},{"question":"Will 3VA1112-4EF36-0AF0 drop into a panel that was specified around 3VA1112-5EE32-0AA0 without rewiring?","answer":"Mechanically yes — both are 3-pole SENTRON 3VA1 breakers with identical mounting footprint (130 x 76.2 x 70 mm). The bus bar and lug positions are the same. Electrically, the trip unit differs: the 4EF36 uses a TM240 thermal-magnetic release, while the 5EE32 uses a different release. Verify the trip curve and SCCR coordination before swapping; the wiring itself does not need to change."},{"question":"What compliance documentation does this brand provide for 3VA1112-4EF36-0AF0 (RoHS, REACH, UL, IEC)?","answer":"As a Siemens SENTRON product, this MCCB is designed to meet IEC 60947-2 and UL 489 standards. RoHS and REACH compliance declarations are available from Siemens on request. The evidence does not list specific certification marks, but the 3VA1 series is typically UL listed and CE marked for the European market."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1112-4EF36-0AF0","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/3VA1112-4EF36-0AF0 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}}