{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1112-1AA42-0AD0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1112-1AA42-0AD0","canonicalUrl":"https://aoctrl.com/siemens/3VA1112-1AA42-0AD0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1112-1AA42-0AD0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1112-1AA42-0AD0, switch disconnector in MCCB design, 4-pole, 125 A rated continuous current, 690 V AC / 600 V DC, busbar connection, front terminals.","salesMarkdown":"## Switch disconnector in MCCB form factor The Siemens 3VA1112-1AA42-0AD0 is a SENTRON switch disconnector built in an MCCB housing — 4-pole, rated for 125 A continuous current (Iu) across the full ambient range from 40 °C to 70 °C with no derating needed per the datasheet. That flat thermal curve simplifies panel design: you size the busbar and enclosure for 125 A at the worst-case ambient, not a derated intermediate value. Rated insulation voltage is 800 V, with maximum operational voltage 690 V AC 50/60 Hz and 600 V DC. The 4-pole configuration handles three-phase plus neutral switching in a single unit, common for main incomers or generator tie-in applications. ## Mounting and connection Main circuit connection is via busbar — front terminal arrangement — so this unit is designed to bolt directly onto a busbar system, not for cable lug termination. Panel builders should plan for busbar stabs or adapter kits; the 101.6 mm width and 70 mm depth fit standard SENTRON 3VA mounting footprints. No undervoltage release or voltage trigger is fitted on this variant; the auxiliary release slot is empty. A motor drive can be added as an optional extension if remote switching is needed later.","metaTitle":"Siemens 3VA1112-1AA42-0AD0 SENTRON Switch Disconnector, 125","metaDescription":"Siemens 3VA1112-1AA42-0AD0 SENTRON MCCB-design switch disconnector, 125 A continuous, 4-pole, 690 V AC. Current lifecycle. Sourced to order. Request RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"70 mm","Width":"101.6 mm","Height":"130 mm","at 40 °C":"125 A","at 45 °C":"125 A","at 50 °C":"125 A","at 55 °C":"125 A","at 60 °C":"125 A","at 65 °C":"125 A","at 70 °C":"125 A","Limited To 1 S":"2 kA","Trip indicator":"No","Number of poles":"4","Product version":"in MCCB design","Voltage trigger":"No","lifecycle_stage":"current","Limited To 0.5 S":"2 kA","Product brand name":"SENTRON","Product designation":"Switch disconnector","Latching - endurance":"15 000","Undervoltage Release":"No","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","Power loss [W] / maximum":"38 W","Auxiliary contact version":"3 auxiliary switches HQ","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Rated continuous current Iu":"125 A","Rated insulation voltage Ui":"800 V","Design of the auxiliary release":"Without auxiliary release","Protection class IP / on the front":"IP40","Reference code / acc. to DIN EN 81346-2":"Q","Max. rated operational voltage Ue with DC":"600 V","Undervoltage Release With Leading Contact":"No","Product extension / optional / motor drive":"Yes","Number of CO contacts / for auxiliary contacts":"3","Max. rated operational voltage Ue with AC 50/60Hz":"690 V","Type of electrical connection / for main current circuit":"busbar connection","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=109533&mlfb=3VA1112-1AA42-0AD0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1112-1AA42-0AD0/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3VA1112-1AA42-0AD0?","answer":"Submit an RFQ through this listing. Availability and current pricing are confirmed at quote time through independent distribution channels."},{"question":"What is the rated continuous current of 3VA1112-1AA42-0AD0?","answer":"125 A continuous (Iu), and it holds that rating from 40 °C through 70 °C ambient without derating."},{"question":"What compliance documentation does this brand provide for 3VA1112-1AA42-0AD0?","answer":"The evidence does not list specific compliance certificates (RoHS, REACH, UL, IEC) for this order code. Standard SENTRON documentation applies; request the manufacturer's declaration at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1112-1AA42-0AD0","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/3VA1112-1AA42-0AD0 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}}