{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1112-5EF32-0JA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1112-5EF32-0JA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1112-5EF32-0JA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1112-5EF32-0JA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1112-5EF32-0JA0, 3-pole molded case circuit breaker, 125 A rated current, 187 kA breaking capacity at 240 V AC, shunt trip release, TM240 overcurrent release.","salesMarkdown":"The Siemens SENTRON 3VA1112-5EF32-0JA0 is a 3-pole molded case circuit breaker rated for 125 A continuous current across the 40 °C to 50 °C ambient range, with no derating needed up to that point. The TM240 thermal-magnetic release provides fixed-time overcurrent protection for line distribution or feeder circuits, not motor overload curves. ## Breaking capacity by voltage — selectivity planning The interrupting rating drops as system voltage rises: 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 500 V and 690 V. That means in a 480 V panel this breaker still clears 75.6 kA, which covers most industrial service-entrance and sub-distribution scenarios. At 690 V the 17 kA rating suits it for downstream branch protection rather than main incoming duty. ## Thermal derating and shunt trip integration Above 50 °C the 125 A rating begins a gentle derating curve — 122 A at 55 °C, 120 A at 60 °C, 117 A at 65 °C, 114 A at 70 °C. The shunt trip release (STL) allows remote tripping via a separate control voltage, useful for emergency-stop or interlock circuits. The breaker measures 130 mm high, 76.2 mm wide, 70 mm deep — fits standard 3-pole MCCB panel cutouts without special adapters.","metaTitle":"SENTRON 3VA1112-5EF32-0JA0 MCCB, 125A 3-Pole, 187kA at 240V","metaDescription":"Siemens SENTRON 3VA1112-5EF32-0JA0 molded case circuit breaker, 125A rated, 3-pole, 187kA breaking at 240V. Shunt trip release, TM240. Current lifecycle. Quoted 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":"187 kA","at 415 V":"121 kA","at 440 V":"75.6 kA","at 500 V":"17 kA","at 690 V":"17 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":"3VA11125EF320AA0","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":"0","Switching Capacity Class Of The Circuit Breaker":"M","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=339693&mlfb=3VA1112-5EF32-0JA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1112-5EF32-0JA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1112-5EF32-0JA0?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What is the breaking capacity of 3VA1112-5EF32-0JA0 at 240 V?","answer":"187 kA at 240 V AC, which is the highest interrupting rating for this breaker across its voltage range."},{"question":"Does 3VA1112-5EF32-0JA0 include a shunt trip?","answer":"Yes, the auxiliary release is a shunt trip (STL), allowing remote tripping via a separate control signal."},{"question":"What is the rated current at 40 °C for 3VA1112-5EF32-0JA0?","answer":"125 A continuous at 40 °C, with no derating needed up to 50 °C ambient."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1112-5EF32-0JA0","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/3VA1112-5EF32-0JA0 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}}