{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1112-3EF36-0AF0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1112-3EF36-0AF0","canonicalUrl":"https://aoctrl.com/siemens/3VA1112-3EF36-0AF0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1112-3EF36-0AF0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1112-3EF36-0AF0, molded case circuit breaker, 3-pole, 125 A, TM240 release, 75.6 kA interrupting at 240 V, line protection.","salesMarkdown":"It carries 125 A continuously at 40 °C, and its interrupting capacity hits 75.6 kA at 240 V — enough to handle high-fault service-entrance or distribution panels where the available fault current is substantial. The TM240 release means the thermal element is calibrated for a 240 A frame — the breaker is physically built on that frame but shipped with a 125 A continuous rating, which gives you some flexibility if you need to up-rate the trip unit later without swapping the whole breaker. ## Interrupting ratings — match them to your available fault current This MCCB's interrupting capacity drops as system voltage rises: 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. ## Thermal derating — don't lose capacity to a hot panel Above that it starts to taper: 122 A at 55 °C, 120 A at 60 °C, 117 A at 65 °C, 114 A at 70 °C. That's not a showstopper for most loads, but worth factoring into the thermal coordination study. ## Auxiliary and alarm switching built in The auxiliary tracks the breaker's open/closed position; the trip alarm signals only when the breaker trips on fault, not on manual opening. That's useful for remote fault annunciation or a shunt-trip supervision circuit — saves adding an external accessory block for basic status feedback. ## Panel fit — dimensions and power loss Overall dimensions: 130 mm height, 76.2 mm width (3 inches — standard MCCB footprint for this class), 70 mm depth. Maximum power dissipation is 28.1 W — not negligible; if you're packing several of these side-by-side in a sealed box, you'll want to account for the heat in the enclosure sizing. ## Environmental limits and approvals The part carries Siemens SENTRON branding and is designed to IEC/EN 60947-2; compliance documentation (CE, RoHS, REACH) is standard with the shipment.","metaTitle":"Siemens 3VA1112-3EF36-0AF0 SENTRON MCCB, 125 A, 3-Pole, 75.6","metaDescription":"Siemens SENTRON 3VA1112-3EF36-0AF0 molded case circuit breaker, 125 A, 3-pole, 75.6 kA at 240 V. TM240 release, 1 aux + 1 trip alarm. Active lifecycle, sourced 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":"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":"3VA11123EF360AA0","Design Of The Auxiliary Switch":"1 auxiliary switch + 1 trip alarm switch 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":"3VA9988-0AB12","Switching Capacity Class Of The Circuit Breaker":"N","Mechanical Service Life (Operating Cycles) / Typical":"20 000","Type Of Electrical Connection / For Main Current Circuit":"box terminal on both sides","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=313716&mlfb=3VA1112-3EF36-0AF0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1112-3EF36-0AF0/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3VA1112-3EF36-0AF0?","answer":"Submit an RFQ through this listing. The part is sourced to order through independent distribution; availability and current pricing are confirmed at quote time."},{"question":"What is the interrupting capacity of 3VA1112-3EF36-0AF0 at 240 V?","answer":"75.6 kA at 240 V, dropping to 52.5 kA at 415 V, 32 kA at 440 V, and 11.9 kA at 500 V and 690 V."},{"question":"Does 3VA1112-3EF36-0AF0 include auxiliary contacts?","answer":"Yes, it ships with one auxiliary switch and one trip alarm switch (HQ type) factory-installed."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1112-3EF36-0AF0","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/3VA1112-3EF36-0AF0 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}}