{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1112-3EF32-0AC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1112-3EF32-0AC0","canonicalUrl":"https://aoctrl.com/siemens/3VA1112-3EF32-0AC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1112-3EF32-0AC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1112-3EF32-0AC0, molded case circuit breaker, 3-pole, 125 A (40-50°C), TM240 thermal-magnetic release, line protection, 75.6 kA at 240 V.","salesMarkdown":"The Siemens 3VA1112-3EF32-0AC0 is a SENTRON molded case circuit breaker (MCCB) for line protection, rated 125 A continuously at 40-50 °C ambient with a 3-pole configuration and a TM240 thermal-magnetic release. Its breaking capacity reaches 75.6 kA at 240 V, 52.5 kA at 415 V, and 32 kA at 440 V, with 11.9 kA available at both 500 V and 690 V — figures that govern selectivity coordination in a distribution panel. The 125 A rating holds across 40-50 °C, then derates to 122 A at 55 °C, 120 A at 60 °C, 117 A at 65 °C, and 114 A at 70 °C — a 9 % drop from 50 °C to 70 °C that a panel builder must account for in a hot enclosure. The breaker carries two factory-fitted HQ auxiliary switches for status indication or interlocking. ## Panel fit & integration Dimensions are 70 mm deep, 76.2 mm wide, and 130 mm high — a 3-pole MCCB footprint that fits standard Siemens SENTRON mounting plates and busbar systems. The 76.2 mm width (3 inches) matches the typical 3-pole MCCB slot in a distribution panel, so a panel designed for a 3VA1112-5EE32-0AA0 or similar 3-pole SENTRON will accept this breaker without rewiring, provided the TM240 release and 125 A rating suit the circuit. ## Breaking capacity & coordination The 75.6 kA at 240 V is the highest interrupting rating; at 415 V it drops to 52.5 kA, and at 440 V to 32 kA. These values determine where the breaker can be placed in a fault-current hierarchy — upstream of lower-rated devices, or as a main breaker in a panel with a known available fault current below these thresholds.","metaTitle":"Siemens 3VA1112-3EF32-0AC0 SENTRON MCCB, 125 A, 3-Pole, TM24","metaDescription":"Siemens SENTRON 3VA1112-3EF32-0AC0 molded case circuit breaker, 125 A rated at 40-50°C, 3-pole, TM240 release, 75.6 kA at 240 V. Active 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":"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":"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":"3VA11123EF320AA0","Design Of The Auxiliary Switch":"2 auxiliary switches HQ","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":"3VA9988-0AA12","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=259003&mlfb=3VA1112-3EF32-0AC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1112-3EF32-0AC0/alternatives.json"},"ai":{"faq":[{"question":"What is the depth of 3VA1112-3EF32-0AC0?","answer":"The depth is 70 mm (2.76 inches)."},{"question":"What is the width of 3VA1112-3EF32-0AC0?","answer":"The width is 76.2 mm (3 inches)."},{"question":"Will 3VA1112-3EF32-0AC0 drop into a panel specified for 3VA1112-5EE32-0AA0 without rewiring?","answer":"Yes, both are 3-pole SENTRON MCCBs with the same 76.2 mm width and mounting footprint. The physical swap is direct, but the trip unit differs (TM240 thermal-magnetic vs. electronic), so the protection settings and coordination study must be reviewed before substitution."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1112-3EF32-0AC0","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/3VA1112-3EF32-0AC0 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}}