{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1112-3EF32-0DH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1112-3EF32-0DH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1112-3EF32-0DH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1112-3EF32-0DH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1112-3EF32-0DH0, molded case circuit breaker, 3-pole, 125 A, line protection, 75.6 kA at 240 V, undervoltage release, 2 aux + 1 trip alarm switch.","salesMarkdown":"It carries 125 A at 40 °C and delivers a breaking capacity of 75.6 kA at 240 V, 52.5 kA at 415 V, and 32 kA at 440 V — enough headroom for most industrial distribution panels where fault current runs high. The 125 A frame means it protects feeders or large branch circuits, and the 3-pole design handles three-phase loads straight out of the box. The 125 A rating at 40 °C is the continuous current the breaker can carry without tripping in a 40 °C ambient. If your panel runs hotter — say 55 °C — the breaker derates to 122 A, and at 70 °C it's 114 A. That matters when you're packing breakers tight in a closed enclosure; you need to check the actual ambient at the breaker location, not just the load. Breaking capacity is the big one: 75.6 kA at 240 V means this breaker can safely interrupt a fault current up to that level without welding its contacts or exploding. At 415 V it's still 52.5 kA, and at 690 V it holds at 11.9 kA. That covers most industrial services up to 690 V, but if your transformer is big enough to push fault current past 52.5 kA at 415 V, you need a higher-rated breaker upstream. Storage temperature range is -40 °C to 80 °C, operating is -25 °C to 70 °C — fine for most indoor panel environments but not for direct outdoor exposure without an enclosure. ## Panel integration The breaker measures 130 mm high, 76.2 mm wide, and 70 mm deep. Those dimensions are for the base unit without the rotary handle or external accessories. The width of 76.2 mm (3 inches) is standard for a 3-pole MCCB in this class — it fits alongside other SENTRON breakers in a common distribution panel without odd gaps.","metaTitle":"Siemens SENTRON 3VA1112-3EF32-0DH0 MCCB, 125 A, 3-Pole, 75.6","metaDescription":"Siemens SENTRON 3VA1112-3EF32-0DH0 molded case circuit breaker, 125 A, 3-pole, line protection, 75.6 kA at 240 V. Current production. Available 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":"75.6 kA","at 415 V":"52.5 kA","at 440 V":"32 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":"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":"3VA11123EF320AA0","Design Of The Auxiliary Switch":"2 auxiliary switches + 1 trip alarm switch 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":"3VA9608-0BB25","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":"N","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=454211&mlfb=3VA1112-3EF32-0DH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1112-3EF32-0DH0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1112-3EF32-0DH0 and how do I get a price?","answer":"This part is sourced to order against an RFQ through independent distribution. Submit a request for quote; availability and current pricing are confirmed at quote time."},{"question":"What is the breaking capacity of 3VA1112-3EF32-0DH0 at different voltages?","answer":"75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 11.9 kA at both 500 V and 690 V."},{"question":"Does this breaker include auxiliary switches or an undervoltage release?","answer":"Yes, it includes an undervoltage release (UVR) and comes with two auxiliary switches plus one trip alarm switch."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1112-3EF32-0DH0","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/3VA1112-3EF32-0DH0 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}}