{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1110-1AA42-0KC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1110-1AA42-0KC0","canonicalUrl":"https://aoctrl.com/siemens/3VA1110-1AA42-0KC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1110-1AA42-0KC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1110-1AA42-0KC0 switch disconnector in MCCB design, 4-pole, 100 A rated continuous current, shunt trip STL 220-250 VDC / 208-277 VAC, 2 auxiliary switches HQ, IP40 front.","salesMarkdown":"It carries no overload or short-circuit protection — this is a pure disconnect for isolation and switching duty, not a circuit breaker. The shunt trip (STL) release operates on 220-250 VDC or 208-277 VAC, giving you remote trip capability for emergency-stop or process-interlock circuits. Two built-in HQ auxiliary switches report contact position back to the PLC or panel indicators. The 100 A continuous rating (Iu) defines the maximum load it can carry without overheating — sized for feeder or main disconnect duty on a 100 A circuit. The 800 V rated insulation voltage (Ui) and 690 VAC / 600 VDC max operational voltage (Ue) cover standard 400/480 VAC panels and DC bus applications up to 600 V. Front terminals with busbar connection mean it lands directly on a panel busbar system, not on cable lugs — verify your busbar pitch matches the 101.6 mm width footprint. ## Deployment context Mounts in a standard panel on a busbar system via front terminals. The 70 mm depth fits shallow enclosures. The shunt trip allows integration into safety circuits or remote shutdown schemes — wire it to an E-stop relay or PLC output for controlled disconnection. The two HQ auxiliary switches (CO contacts) provide status feedback for SCADA or local indication. The 15 000-cycle mechanical endurance is typical for a disconnect used in daily switching rather than infrequent isolation.","metaTitle":"Siemens 3VA1110-1AA42-0KC0 SENTRON Switch Disconnector, 100","metaDescription":"Siemens SENTRON 3VA1110-1AA42-0KC0 switch disconnector in MCCB design. 100 A rated continuous current, 4-pole, shunt trip STL 220-250 VDC / 208-277 VAC. Current lifecycle. Sourced","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":"Yes","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":"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":"Shunt trip (STL)","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=10880&mlfb=3VA1110-1AA42-0KC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1110-1AA42-0KC0/alternatives.json"},"ai":{"faq":[{"question":"What is the difference between this switch disconnector and a 3VA1110-5EE32-0JA0 MCCB?","answer":"The 3VA1110-1AA42-0KC0 is a pure switch disconnector with no overcurrent protection; the 3VA1110-5EE32-0JA0 is a 3-pole MCCB with a TM220 thermal-magnetic trip unit providing LI protection. The disconnector is 4-pole (101.6 mm wide) versus the MCCB's 3-pole (76.2 mm wide). Both share the same 70 mm depth and 130 mm height."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1110-1AA42-0KC0","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/3VA1110-1AA42-0KC0 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}}