{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1112-3FF46-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1112-3FF46-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1112-3FF46-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1112-3FF46-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA, molded case circuit breaker, 4-pole, 125 A rated at 40 °C, TM240 thermal-magnetic release, breaking capacity 75.6 kA at 240 V AC, IP40 front protection.","salesMarkdown":"The Siemens SENTRON 3VA1112-3FF46-0AA0 is a 4-pole molded case circuit breaker rated 125 A at 40 °C ambient, with a TM240 thermal-magnetic release. Breaking capacity runs from 75.6 kA at 240 V AC down to 11.9 kA at 690 V AC — that spread tells you the available fault current at the panelboard determines which voltage column you spec from. Front protection is IP40 — fine inside a dry enclosure, but not for washdown zones. Power loss runs 28.1 W max at rated load, which matters when you stack breakers in a multi-unit panel; that heat has to leave the enclosure or you'll see the thermal trip curve shift on the downstream poles. ## Thermal derating — the real ampacity At 55 °C it's 122 A; at 60 °C it's 120 A; at 65 °C it's 117 A; at 70 °C it's 114 A. No derating needed for most panel environments, but if your enclosure sits near a furnace line or a compressor discharge, you lose roughly 2-3 A per 5 °C above 50 °C. The TM240 release is calibrated for that curve — don't swap in a higher-rated frame expecting the same thermal behavior. ## Panel fit — dimensions and footprint Width is 101.6 mm (4 in), depth 70 mm (2.76 in), height 130 mm (5.12 in). The N-conductor protection is set at 50 %, meaning the neutral pole trips at half the phase-pole rating; verify that matches your distribution panel's neutral protection scheme before wiring.","metaTitle":"Siemens 3VA1112-3FF46-0AA0 SENTRON MCCB, 125A, 4-Pole, 75.6k","metaDescription":"Siemens SENTRON 3VA1112-3FF46-0AA0 4-pole molded case circuit breaker, 125A rated, 75.6kA breaking at 240V AC. TM240 release. Active production. Order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"70 mm","Width":"101.6 mm","title":"3VA1112-3FF46-0AA0","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]":"4 in","Height [In]":"5.12 in","description":"circuit breaker 3VA1 IEC frame 160 breaking capacity class N Icu=25kA @ 415V 4-pole, line protection TM240, ATAM, In=125A overload protection Ir=88A...125A short-circuit protection Ii=5...10 x In N conductor protection 50% clamp connection","Trip Indicator":"No","Number Of Poles":"4","Product version":"Line protection","Voltage Trigger":"No","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"No","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","rated insulation voltage Ui":"800 V","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","design of the N-conductor protection":"50%","operating voltage / at AC / rated value":"690 V","Max. rated operational voltage Ue with DC":"600 V","reference code / according to IEC 81346-2":"Q","Product Extension / Optional / Motor Drive":"Yes","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","Mechanical Service Life (Switching Cycles) / Typical":"20 000","reference value setting current (Ii) / for I-tripping":"x In","Type Of Electrical Connection / For Main Current Circuit":"box terminal on both sides","type of value list setting current (Ii) / for I-tripping":"St","Arrangement Of Electrical Connectors / For Main Current Circuit":"Front terminal","Type of connectable conductor cross-section, round conductor terminal, stranded":"1 x (1,5 - 70 mm²)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/71f3fe9859a9c8d52188a9d8ac2bc1ee.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=392394&mlfb=3VA1112-3FF46-0AA0"},"ai":{"faq":[{"question":"Where can I buy 3VA1112-3FF46-0AA0 and get a price?","answer":"Sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock count or price is published here."},{"question":"What is 3VA1112-3FF46-0AA0's breaking capacity at 240 V?","answer":"75.6 kA at 240 V AC, derating to 52.5 kA at 415 V and 11.9 kA at 690 V."},{"question":"What are the mounting dimensions for 3VA1112-3FF46-0AA0?","answer":"Width 101.6 mm, depth 70 mm, height 130 mm — standard SENTRON 3VA frame footprint."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1112-3FF46-0AA0","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/3VA1112-3FF46-0AA0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}