{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1112-4GF42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1112-4GF42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1112-4GF42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1112-4GF42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA molded case circuit breaker, 4-pole, 125 A continuous, TM240 thermal-magnetic release, 121 kA interrupting at 240 V, IP40 front.","salesMarkdown":"## What this 4-pole 125 A MCCB brings to the panel It's built for line protection in distribution panels where you need solid interrupting capacity: 121 kA at 240 V, 75.6 kA at 415 V, and still 11.9 kA at 690 V. The thermal-magnetic TM240 release handles overloads and short-circuits in one package — no electronic adjustments, which means fewer things to go wrong out in the field. Power loss maxes out at 28.1 W, so panel heat buildup is manageable even in a packed enclosure. ## Sizing and derating for real-world conditions At 55 °C it derates to 122 A, at 60 °C to 120 A, at 65 °C to 117 A, and at 70 °C to 114 A. The 4-pole design with 100 % N-conductor protection means the neutral pole is fully rated and trips with the phase poles — no derating or special coordination needed for the neutral path. For compliance documentation, the SENTRON 3VA series carries UL, IEC, CSA, and CE certifications per standard Siemens practice. Specific declaration files (RoHS, REACH) are available through the manufacturer's support portal. The 3VA1112-5EE32-0AA0 is a 3-pole version with an electronic trip unit, while this 4-pole unit uses a thermal-magnetic TM240 release. If your panel was wired for a 3-pole breaker with electronic adjustments, swapping to this one means losing the adjustable trip curve and adding a neutral pole that needs to be landed. Same frame size — the 70 mm depth and 101.6 mm width are identical — so it physically fits the same mounting footprint, but the wiring and protection philosophy are different.","metaTitle":"3VA1112-4GF42-0AA0 SENTRON 4P MCCB, 125 A, 121 kA at 240 V","metaDescription":"Siemens SENTRON 3VA1112-4GF42-0AA0 molded case circuit breaker, 4-pole, 125 A, TM240 release, 121 kA at 240 V. Current lifecycle stage. Sourced to 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","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 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","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","rated insulation voltage Ui":"800 V","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","design of the N-conductor protection":"100%","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.":"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":"S","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":"https://cdn.aoctrl.com/eed275e16d236c9e3c548f9924cbf19b.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=440797&mlfb=3VA1112-4GF42-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1112-4GF42-0AA0/alternatives.json"},"ai":{"faq":[{"question":"Who supplies 3VA1112-4GF42-0AA0 and how is it quoted for volume purchases?","answer":"This breaker is sourced through independent distribution and quoted to order against an RFQ. Availability and current pricing are confirmed at quote time."},{"question":"What is 3VA1112-4GF42-0AA0's interrupting capacity at 415 V?","answer":"At 415 V the interrupting capacity is 75.6 kA."},{"question":"What compliance documentation does this brand provide for 3VA1112-4GF42-0AA0?","answer":"The SENTRON 3VA series carries UL, IEC, CSA, and CE certifications. RoHS and REACH declarations are available through the manufacturer's support portal."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1112-4GF42-0AA0","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/3VA1112-4GF42-0AA0 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}}