{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1112-4FE42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1112-4FE42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1112-4FE42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1112-4FE42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1112-4FE42-0AA0, molded case circuit breaker, 4-pole, 125 A (40 °C), TM220 release, 70 mm depth, 121 kA at 240 V.","salesMarkdown":"The 125 A rating is the continuous current it can carry without tripping at that ambient; above 55 °C it derates to 122 A at 55 °C, 120 A at 60 °C, 117 A at 65 °C, and 114 A at 70 °C, so if this breaker lives in a hot panel or near other heat sources, you need to account for that drop. ## Breaking capacity — what it interrupts Breaking capacity is the real selector here. At 415 V it's 75.6 kA, at 440 V it's 52.5 kA, and at 500 V and 690 V it drops to 11.9 kA.","metaTitle":"Siemens 3VA1112-4FE42-0AA0 SENTRON MCCB, 125 A, 4-Pole, 70 m","metaDescription":"Siemens SENTRON 3VA1112-4FE42-0AA0 molded case circuit breaker, 125 A rated at 40°C, 4-pole, 70 mm depth. Breaking capacity 121 kA at 240 V. Active production. Quoted to order.","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","Height":"130 mm","Maximum":"62 A","Minimum":"62 A","at 240 V":"121 kA","at 415 V":"75.6 kA","at 440 V":"52.5 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","Trip Indicator":"No","Number Of Poles":"4","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","Ground-Fault Monitoring Version":"Without","Insulation Voltage / Rated Value":"800 V","Design Of The Overcurrent Release":"TM220","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%","Product Function / Grounding Protection":"No","operating voltage / at AC / rated value":"690 V","operating voltage / at DC / rated value":"600 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":"0","Switching Capacity Class Of The Circuit Breaker":"S","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":"https://cdn.aoctrl.com/e68b7e158efc37645dfc2a42bc7d1f67.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=255214&mlfb=3VA1112-4FE42-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1112-4FE42-0AA0/alternatives.json"},"ai":{"faq":[{"question":"What is 3VA1112-4FE42-0AA0's listed depth?","answer":"The listed depth is 70 mm (2.76 in). That's the body depth behind the panel face; the breaker extends forward past the front face by the handle and terminal cover height."},{"question":"What is 3VA1112-4FE42-0AA0's listed width?","answer":"The listed width is 101.6 mm (4 in). That's the standard 4-pole MCCB footprint for the SENTRON 3VA family at this rating."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1112-4FE42-0AA0","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/3VA1112-4FE42-0AA0 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}}