{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1112-4FD46-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1112-4FD46-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1112-4FD46-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1112-4FD46-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1112-4FD46-0AA0, molded case circuit breaker, 4-pole, 125 A, TM210 thermal-magnetic release, 121 kA at 240 V, 75.6 kA at 415 V.","salesMarkdown":"## Line protection MCCB for 125 A feeder circuits The 125 A rating holds at 45 °C and 50 °C, then derates to 114 A at 70 °C, so the thermal curve matters if the breaker sits in a warm enclosure or next to other heat sources. Breaking capacity runs 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at 500 V and 690 V. At 415 V, that 75.6 kA gives solid headroom for most industrial secondary distribution — you can coordinate downstream without worrying about the main tripping on a bolted fault. The TM210 release has an adjustable li (instantaneous trip) up to 1250 A, and the N-conductor protection is set at 50 % of the phase rating. ## Panel fit and thermal management Footprint is 101.6 mm wide by 130 mm tall by 70 mm deep — a 4-pole MCCB that fits standard Siemens SENTRON mounting. Maximum power dissipation is 28.1 W at full load; that heat has to leave the enclosure, so factor it into the cabinet thermal budget, especially when grouping several breakers.","metaTitle":"Siemens 3VA1112-4FD46-0AA0 SENTRON MCCB, 125 A, 4-Pole, TM21","metaDescription":"Siemens SENTRON 3VA1112-4FD46-0AA0 molded case circuit breaker, 125 A rated current, 4-pole, TM210 release, 121 kA at 240 V. Current lifecycle stage. Sourced 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","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 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","Number Of Poles":"4","Product version":"Line protection","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","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","Courant permanent assigné Iu":"125 A","Ground-Fault Monitoring Version":"Without","Tension assignée d'isolement Ui":"800 V","Design Of The Overcurrent Release":"TM210","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%","reference code / acc. to IEC 81346-2":"Q","Max. rated operational voltage Ue with DC":"600 V","Product Extension / Optional / Motor Drive":"Yes","Adjustable response value current / li max.":"1 250 A","Adjustable response value current / li min.":"1 250 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":"S","Max. rated operational current of the frame size":"160 A","Mechanical Service Life (Operating Cycles) / Typical":"20 000","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,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/5d17ac50f8ea1687e1ee817f00a449d8.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=443579&mlfb=3VA1112-4FD46-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1112-4FD46-0AA0/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3VA1112-4FD46-0AA0?","answer":"The part is sourced to order through independent distribution. Submit an RFQ to confirm current pricing and availability — both are quoted at the time of your request."},{"question":"What is the breaking capacity of 3VA1112-4FD46-0AA0 at 415 V?","answer":"At 415 V the breaking capacity is 75.6 kA, which provides substantial fault-current headroom for most industrial secondary distribution panels."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1112-4FD46-0AA0","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/3VA1112-4FD46-0AA0 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}}