{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1112-4EF32-0JC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1112-4EF32-0JC0","canonicalUrl":"https://aoctrl.com/siemens/3VA1112-4EF32-0JC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1112-4EF32-0JC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1112-4EF32-0JC0, molded case circuit breaker, 3-pole, 125 A rated at 40 °C, breaking capacity 121 kA at 240 V, depth 70 mm, width 76.2 mm.","salesMarkdown":"The breaker's interrupting capacity reaches 121 kA at 240 V and 75.6 kA at 415 V, which gives you headroom for high-fault installations like substation feeders or large motor control centers. ## Current derating — what the thermal curve means for your panel The 125 A rating holds flat from 40 °C through 50 °C, then begins a gradual decline: 122 A at 55 °C, 120 A at 60 °C, 117 A at 65 °C, and 114 A at 70 °C. The 28.1 W maximum power loss also contributes to internal heat rise, so factor that into your thermal budget. This breaker delivers 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. The steep drop above 500 V is typical for MCCBs with this frame size — the arc extinction physics limit the interruption at higher line voltages. ## Built-in auxiliary components The auxiliary switches give you remote status feedback — open/closed indication to a PLC or status lamp. ## Physical fit — panel integration note Dimensions: 130 mm height, 76.2 mm width (3 in), 70 mm depth. The 3-pole width is standard for a 125 A frame — it fits a 3-module DIN-rail slot or a bolted panel-mount footprint.","metaTitle":"Siemens 3VA1112-4EF32-0JC0 SENTRON MCCB, 125A, 3-Pole, 70mm","metaDescription":"Siemens SENTRON 3VA1112-4EF32-0JC0 molded case circuit breaker, 125A rated at 40°C, 3-pole, 70mm depth. Breaking capacity 121kA at 240V. Active production, sourced to order against","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":"Yes","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":"2 auxiliary switches HQ","Design Of The Auxiliary Release":"shunt trip (STL)","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":"3VA9688-0BL32","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":"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=529648&mlfb=3VA1112-4EF32-0JC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1112-4EF32-0JC0/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 3VA1112-4EF32-0JC0 at 415 V?","answer":"75.6 kA at 415 V. That's the interrupting rating you'd use for most 400 V-class industrial distribution systems in Europe and Asia."},{"question":"Where can I buy 3VA1112-4EF32-0JC0 and how is it quoted?","answer":"Sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time — send your quantity and target ship date for a firm price."},{"question":"Will 3VA1112-4EF32-0JC0 drop into a panel designed for 3VA1112-5EE32-0AA0?","answer":"The physical footprint — 130 mm height, 76.2 mm width, 70 mm depth — is identical across the 3VA1112 frame family, so it will mount in the same panel cutout and DIN-rail slot. Verify the terminal arrangement matches your bus bars or cable lugs before committing, but the mechanical fit is the same."},{"question":"What is the rated current of 3VA1112-4EF32-0JC0 at 40 °C?","answer":"125 A continuous at 40 °C ambient. Derate per the thermal curve above 50 °C — 122 A at 55 °C, 120 A at 60 °C, 117 A at 65 °C, 114 A at 70 °C."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1112-4EF32-0JC0","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/3VA1112-4EF32-0JC0 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}}