{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1112-5EF32-0AB0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1112-5EF32-0AB0","canonicalUrl":"https://aoctrl.com/siemens/3VA1112-5EF32-0AB0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1112-5EF32-0AB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1112-5EF32-0AB0, molded case circuit breaker, 3-pole, TM240 release, 125 A at 40 °C, 187 kA at 240 V.","salesMarkdown":"## What the ratings mean for fit The Siemens 3VA1112-5EF32-0AB0 is a SENTRON molded case circuit breaker (MCCB) built for line protection in distribution panels. Its 125 A continuous rating at 40 °C holds flat through 50 °C — no derating needed until you cross 55 °C, where it drops to 122 A, and then 120 A at 60 °C. That thermal curve matters when the breaker sits in a warm enclosure alongside other heat sources; you can load it to 125 A without headroom padding up to 50 °C ambient. The interrupting capacity tells you where this breaker can live in the fault-current hierarchy: 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 500 V and 690 V. That 187 kA figure at 240 V is high enough for most service-entrance or main-tie applications on 240 V systems; at 415 V the 121 kA still covers heavy industrial feeds. The sharp drop to 17 kA above 500 V means you need to verify the available fault current at the point of installation if the system voltage exceeds 500 V. Three-pole construction with a TM240 thermal-magnetic release — the TM designation means fixed thermal and magnetic trip settings, not adjustable. No undervoltage release, no shunt trip, no ground-fault monitoring on this variant. The auxiliary switch bay carries two HP-style switches for status feedback to a PLC or indication lamp. ## Panel fit and integration Dimensions are 130 mm high, 76.2 mm wide, 70 mm deep — a standard MCCB footprint for 125 A frames. It mounts directly to a DIN rail or panel-mount adapter; the 70 mm depth leaves room for rear-connected busbars in a typical distribution cabinet. Rated insulation voltage is 800 V, so it can be used in 690 V systems with appropriate clearance. Power loss is 28.1 W maximum at rated load. That's moderate for a 125 A frame — account for it in enclosure thermal calculations if the panel is densely packed.","metaTitle":"Siemens 3VA1112-5EF32-0AB0 SENTRON MCCB, 125 A, 187 kA at 24","metaDescription":"Siemens SENTRON 3VA1112-5EF32-0AB0 molded case circuit breaker, 3-pole, 125 A rated at 40 °C, 187 kA breaking capacity at 240 V. Active 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":"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":"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":"3VA11125EF320AA0","Design Of The Auxiliary Switch":"2 auxiliary switches HP","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":"3VA9988-0AA11","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=522097&mlfb=3VA1112-5EF32-0AB0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1112-5EF32-0AB0/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 3VA1112-5EF32-0AB0 at 240 V?","answer":"187 kA at 240 V, with 121 kA at 415 V and 75.6 kA at 440 V."},{"question":"Where can I buy 3VA1112-5EF32-0AB0?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"Does 3VA1112-5EF32-0AB0 include an undervoltage release or ground-fault monitoring?","answer":"No — this variant has no undervoltage release and no ground-fault monitoring. It carries two HP auxiliary switches."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1112-5EF32-0AB0","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/3VA1112-5EF32-0AB0 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}}