{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1112-4EF36-0BC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1112-4EF36-0BC0","canonicalUrl":"https://aoctrl.com/siemens/3VA1112-4EF36-0BC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1112-4EF36-0BC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1112-4EF36-0BC0, molded case circuit breaker, 3-pole, 125 A at 40 °C, breaking capacity 121 kA at 240 V AC, with undervoltage release and 2 auxiliary switches HQ.","salesMarkdown":"## Breaking capacity across voltages — where it fits Breaking capacity drops as voltage rises: 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at both 500 V and 690 V. At 415 V it still clears 75.6 kA — enough for most industrial low-voltage switchgear. At 55 °C it derates to 122 A, at 60 °C to 120 A, at 65 °C to 117 A, and at 70 °C to 114 A. Three-pole footprint matches standard SENTRON 3VA MCCB cutouts — drops into existing DIN-rail or screw-mount backplates without panel rework. ## Operating environment and power loss","metaTitle":"Siemens 3VA1112-4EF36-0BC0 SENTRON MCCB, 125A, 3-Pole, 121kA","metaDescription":"Siemens SENTRON 3VA1112-4EF36-0BC0 molded case circuit breaker, 125A rated at 40°C, 3-pole, 121kA breaking capacity at 240V AC. Current production. Quoted to order against RFQ.","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":"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":"3VA11124EF360AA0","Design Of The Auxiliary Switch":"2 auxiliary switches 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":"3VA9608-0BB11","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":"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=364505&mlfb=3VA1112-4EF36-0BC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1112-4EF36-0BC0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1112-4EF36-0BC0 and how is it quoted?","answer":"Sourced and quoted to order against an RFQ through independent distribution; availability and current pricing confirmed at quote time."},{"question":"What is the breaking capacity of 3VA1112-4EF36-0BC0 at 415 V?","answer":"75.6 kA at 415 V AC."},{"question":"What is the rated current of 3VA1112-4EF36-0BC0 at 40 °C?","answer":"125 A at 40 °C ambient."},{"question":"Does 3VA1112-4EF36-0BC0 include an undervoltage release?","answer":"Yes, it comes with an undervoltage release (UVR) and two auxiliary switches HQ factory-fitted."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1112-4EF36-0BC0","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/3VA1112-4EF36-0BC0 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}}