{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1112-3EF32-0AG0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1112-3EF32-0AG0","canonicalUrl":"https://aoctrl.com/siemens/3VA1112-3EF32-0AG0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1112-3EF32-0AG0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1112-3EF32-0AG0, 3-pole molded case circuit breaker, 125 A rated current at 40 °C, breaking capacity 75.6 kA at 240 V, TM240 thermal-magnetic release, line protection design.","salesMarkdown":"## Siemens SENTRON 3VA1112-3EF32-0AG0 — 125 A MCCB, Line Protection It carries a rated current of 125 A at 40 °C and delivers a breaking capacity of 75.6 kA at 240 V AC, stepping down to 52.5 kA at 415 V and 32 kA at 440 V — figures that cover most industrial distribution panels in North America and Europe. The TM240 release means the thermal element tracks a 240 A frame, with the magnetic pickup set at a fixed multiple of the 125 A rating. That combination suits feeder circuits where you need a high short-circuit withstand but don't want nuisance trips on motor inrush — the magnetic hold is high enough to ride through a starting transient. Breaking capacity drops to 11.9 kA at both 500 V and 690 V — still adequate for most 480/277 V and 600 V panels, but at 690 V you're near the limit for high-fault industrial grids. For selectivity coordination downstream of a larger 3VA frame, the TM240's I²t curve is published in Siemens' selectivity tables. The 125 A rating at 40 °C derates to 114 A at 70 °C — a 9 % drop — so if the panel ambient runs hot, size the upstream transformer or bus accordingly. ## Physical Fit and Auxiliary Switching The breaker measures 130 mm high, 76.2 mm wide, and 70 mm deep — a standard 3-pole MCCB footprint that drops into SENTRON panelboards and most DIN-rail adapters. The supplied basic switch carries order code 3VA11123EF320AA0, with one auxiliary contact and one trip-alarm switch (HP type) factory-installed. Power loss is 28.1 W maximum at rated current — within the range for a 125 A frame, but worth checking against the enclosure's thermal dissipation if you're packing multiple breakers in a sealed cabinet.","metaTitle":"Siemens 3VA1112-3EF32-0AG0 SENTRON MCCB, 125A, 75.6kA at 240","metaDescription":"Siemens SENTRON 3VA1112-3EF32-0AG0 molded case circuit breaker, 3-pole, 125A rated at 40°C, 75.6kA breaking at 240V. TM240 release, line protection. Current production. Quoted to o","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":"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":"1 auxiliary switch + 1 trip alarm switch 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":"3VA9988-0AB11","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=55999&mlfb=3VA1112-3EF32-0AG0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1112-3EF32-0AG0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1112-3EF32-0AG0 and get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"What is the breaking capacity of 3VA1112-3EF32-0AG0 at different voltages?","answer":"At 240 V it interrupts 75.6 kA, at 415 V it interrupts 52.5 kA, at 440 V it interrupts 32 kA, and at both 500 V and 690 V it interrupts 11.9 kA."},{"question":"What type of overcurrent release does this breaker use?","answer":"It uses a TM240 thermal-magnetic release — the thermal element is sized for a 240 A frame, and the magnetic pickup is fixed. The breaker is rated 125 A at 40 °C."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1112-3EF32-0AG0","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/3VA1112-3EF32-0AG0 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}}