{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1112-3EF32-0BA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1112-3EF32-0BA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1112-3EF32-0BA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1112-3EF32-0BA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1112-3EF32-0BA0, 3-pole molded case circuit breaker, 125 A, TM240 thermal-magnetic release, line protection, 70 mm depth.","salesMarkdown":"The Siemens SENTRON 3VA1112-3EF32-0BA0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying 125 A continuous at 40 °C through 50 °C with no derating, then stepping down to 114 A at 70 °C. That thermal curve means a panel built for a 125 A feeder in a 50 °C ambient still holds full ampacity — no need to oversize the frame for a warm enclosure. Breaking capacity reaches 75.6 kA at 240 V and 52.5 kA at 415 V, then drops to 11.9 kA at 500 V and holds there through 690 V. For a 480 V distribution panel this breaker clears a 32 kA fault at 440 V — the closest cited point — so size the upstream AIC against the actual system voltage, not the 240 V headline number. That keeps the BOM simple for a dedicated feeder but means you cannot re-range it for a downstream load change without swapping the whole breaker. ## Panel fit and wiring constraints At 70 mm deep and 76.2 mm wide, it occupies roughly the same footprint as a 3-pole SENTRON 3VA1 frame — expect a 130 mm height. No auxiliary contacts or shunt trip are included (auxiliary contact version: without). An undervoltage release is present, so the breaker drops open on loss of control voltage — fails safe on demand for a process safety loop, but verify the release coil matches your control voltage before wiring. Rated insulation voltage is 800 V, with an operating range from -25 °C to 70 °C and storage from -40 °C to 80 °C. The 800 V Ui means it can be used in 690 V systems where the insulation coordination requires a higher-rated device than the nominal system voltage.","metaTitle":"Siemens 3VA1112-3EF32-0BA0 SENTRON MCCB, 125 A, 3-Pole, TM24","metaDescription":"Siemens 3VA1112-3EF32-0BA0 SENTRON 3-pole MCCB, 125 A rated current, TM240 release, 75.6 kA at 240 V. Quoted to order; current pricing confirmed at 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","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","Product version":"Line protection","Voltage Trigger":"No","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"Yes","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"30.6 W","Auxiliary contact version":"Without","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","rated insulation voltage Ui":"800 V","Of The Supplied Basic Switch":"3VA11123EF320AA0","Courant permanent assigné Iu":"125 A","Ground-Fault Monitoring Version":"Without","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","reference code / acc. to IEC 81346-2":"Q","Of The Integrated Auxiliary Trip Unit":"3VA9608-0BB11","Max. rated operational voltage Ue with DC":"500 V","Undervoltage Release With Leading Contact":"No","Product Extension / Optional / Motor Drive":"Yes","Adjustable response value current / lg min.":"1","Adjustable response value current / li max.":"1 250 A","Adjustable response value current / li min.":"625 A","Neutral conductors / upgradeable/retrofittable":"No","Protection Function Of The Overcurrent Release":"LI","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"N","Max. rated operational current of the frame size":"160 A","Mechanical Service Life (Switching 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","Type of connectable conductor cross-section, connection screw, width x thickness , max.":"17 x 6.5 mm","Type of connectable conductor cross-section, connection screw, width x thickness , min.":"12 x 1 mm"}},"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=128832&mlfb=3VA1112-3EF32-0BA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1112-3EF32-0BA0/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3VA1112-3EF32-0BA0?","answer":"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 number."},{"question":"What is the depth of this MCCB?","answer":"70 mm (2.76 in). That is the body depth excluding any handle projection or terminal protrusion — measure the panel clearance against the full installed depth."},{"question":"Will 3VA1112-3EF32-0BA0 drop into a panel wired for 3VA1112-5EF32-0CA0?","answer":"Both are 3-pole SENTRON 3VA1-frame MCCBs with the same 70 mm depth, 76.2 mm width, and 130 mm height — the mounting footprint and terminal positions are identical. The difference is the trip unit: this one uses a TM240 fixed thermal-magnetic release, while the -5EF32-0CA0 carries a different release curve. No rewiring needed if the panel is already wired for a 3VA1 frame, but verify the trip coordination matches the protected circuit."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1112-3EF32-0BA0","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/3VA1112-3EF32-0BA0 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}}