{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1112-4EF32-0JH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1112-4EF32-0JH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1112-4EF32-0JH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1112-4EF32-0JH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1112-4EF32-0JH0, molded case circuit breaker, 3-pole, 125 A, 121 kA interrupting capacity at 240 V AC, line protection design.","salesMarkdown":"The Siemens SENTRON 3VA1112-4EF32-0JH0 is a 3-pole molded case circuit breaker rated 125 A continuous at 40 °C, with an interrupting capacity of 121 kA at 240 V AC. That interrupting figure drops to 75.6 kA at 415 V and 52.5 kA at 440 V — still enough headroom for most industrial service-entrance or feeder applications where fault current runs high. Continuous current holds at 125 A from 40 °C up to 50 °C, then steps down: 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 28.1 W, which matters for enclosure heat rise calculations when grouping multiple breakers. ## Built-in auxiliaries and release options The shunt trip lets a safety PLC or E-stop circuit kill power without a separate contactor; just verify the STL coil voltage matches your control supply.","metaTitle":"Siemens 3VA1112-4EF32-0JH0 SENTRON MCCB, 125 A, 121 kA at 24","metaDescription":"Siemens SENTRON 3VA1112-4EF32-0JH0 molded case circuit breaker, 125 A, 121 kA interrupting at 240 V. Current production. Sourced 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":"Yes","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 + 1 trip alarm switch 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":"3","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=237825&mlfb=3VA1112-4EF32-0JH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1112-4EF32-0JH0/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3VA1112-4EF32-0JH0?","answer":"Submit an RFQ through this listing. We source and quote to order; availability and current pricing are confirmed at quote time."},{"question":"What is the interrupting capacity of 3VA1112-4EF32-0JH0 at different voltages?","answer":"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."},{"question":"What auxiliaries and releases come with 3VA1112-4EF32-0JH0?","answer":"Two auxiliary switches plus one trip alarm switch (HQ), and a shunt trip release (STL). No undervoltage release or ground-fault monitoring."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1112-4EF32-0JH0","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/3VA1112-4EF32-0JH0 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}}