{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1110-1AA42-0DC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1110-1AA42-0DC0","canonicalUrl":"https://aoctrl.com/siemens/3VA1110-1AA42-0DC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1110-1AA42-0DC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1110-1AA42-0DC0, switch disconnector in MCCB design, 4-pole, 100 A rated continuous current, undervoltage release 208-230 V AC 50/60 Hz, 2 auxiliary switches HQ, IP40 front.","salesMarkdown":"## What this SENTRON switch disconnector is for It provides visible isolation for a circuit — no overload or short-circuit protection built in, so it's used ahead of separate protective devices where you need a lockable disconnect point. The built-in undervoltage release (UVR) rated 208-230 V AC 50/60 Hz automatically opens the switch when control voltage drops, which is common on safety circuits or emergency-stop chains where loss of control power should kill the load. Rated continuous current Iu is 100 A — that's the maximum load it can carry continuously without overheating. The rated insulation voltage Ui is 800 V, and max operational voltage hits 690 V AC 50/60 Hz or 600 V DC. On the short-time withstand side, it holds 2 kA for 1 second and the same for 0.5 seconds — that tells you the fault current it can survive closed before a downstream breaker clears it. Power loss maxes at 38 W, which matters for thermal management inside a sealed enclosure. Front protection is IP40 — fine for a dry panel, not for washdown. ## Panel fit and connections Main circuit connects via busbar connection at the front terminals — no rear or plug-in option here. The UVR and two HQ auxiliary switches are factory-installed; no field wiring of separate release modules. The MCCB-style frame means it mounts on a panel plate or DIN rail adapter, not a standard 35 mm rail directly — check the mounting kit included (nut keeper kit per the description).","metaTitle":"Siemens 3VA1110-1AA42-0DC0 SENTRON Switch Disconnector, 100","metaDescription":"Siemens SENTRON 3VA1110-1AA42-0DC0 switch disconnector, 100 A rated continuous current, 4-pole, with undervoltage release 208-230 V AC. Current lifecycle stage. Available to order","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","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":"Yes","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","Power loss [W] / maximum":"38 W","Auxiliary contact version":"2 auxiliary switches HQ","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Rated continuous current Iu":"100 A","Rated insulation voltage Ui":"800 V","Design of the auxiliary release":"Undervoltage release (UVR)","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":"2","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=13391&mlfb=3VA1110-1AA42-0DC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1110-1AA42-0DC0/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3VA1110-1AA42-0DC0?","answer":"Pricing and availability are confirmed at quote time. Submit an RFQ through the storefront; the part is sourced through independent distribution and quoted to order."},{"question":"What are the key ratings of 3VA1110-1AA42-0DC0?","answer":"Rated continuous current 100 A, 4-pole, max AC operational voltage 690 V, max DC operational voltage 600 V, short-time withstand 2 kA for 1 s, IP40 front protection."},{"question":"What does the undervoltage release on 3VA1110-1AA42-0DC0 do?","answer":"The built-in UVR (208-230 V AC 50/60 Hz) opens the switch when control voltage drops below its dropout threshold, providing automatic disconnection on loss of control power — typical for safety circuits or emergency-stop chains."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1110-1AA42-0DC0","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/3VA1110-1AA42-0DC0 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}}