{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1110-1AA42-0CH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1110-1AA42-0CH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1110-1AA42-0CH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1110-1AA42-0CH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1110-1AA42-0CH0, switch disconnector in MCCB design, IEC frame 160, 4-pole, 100 A, undervoltage release 120-127 V AC, 2 HQ auxiliary switches + 1 HQ trip alarm switch, busbar front terminal.","salesMarkdown":"The Siemens 3VA1110-1AA42-0CH0 is a SENTRON switch disconnector built in a molded-case circuit breaker (MCCB) form factor — IEC frame 160, 4-pole, rated 100 A continuous across the full operating temperature range from 40 °C to 70 °C. It is a pure disconnect — no overload or short-circuit protection — so it goes into a circuit where the upstream breaker or fuse handles the fault clearing, and this part provides visible isolation for safe maintenance. ## Undervoltage release and auxiliary switch configuration The UVR does not have a leading contact, so the coil energizes simultaneously with the main contacts; plan the control wiring accordingly if you need the UVR to seal in before the main circuit closes. The auxiliary switch block carries two HQ (high-rupture-capacity) form-C contacts plus one HQ trip alarm switch — three CO contacts total. The trip alarm switch changes state only when the UVR or a manual trip opens the disconnector, giving the PLC a dedicated fault signal separate from the position-feedback aux contacts. That is a clean way to distinguish a deliberate open from a fault-induced open without extra logic in the controller.","metaTitle":"Siemens 3VA1110-1AA42-0CH0 SENTRON Switch Disconnector, 100","metaDescription":"Siemens 3VA1110-1AA42-0CH0 SENTRON switch disconnector, 100 A continuous at 70 °C, 4-pole, with undervoltage release. Current lifecycle. Sourced to order against 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":"100 A","at 45 °C":"100 A","at 50 °C":"100 A","at 55 °C":"100 A","at 60 °C":"100 A","at 65 °C":"100 A","at 70 °C":"100 A","Trip Indicator":"Yes","Number Of Poles":"4","Voltage Trigger":"No","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Switch disconnector","Undervoltage Release":"Yes","Design Of The Product":"in MCCB design","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"38 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Design Of The Auxiliary Switch":"2 auxiliary switches + 1 trip alarm switch HQ","Design Of The Auxiliary Release":"Undervoltage release (UVR)","Insulation Voltage / Rated Value":"800 V","protection class IP / on the front":"IP40","operating voltage / at AC / rated value":"690 V","operating voltage / at DC / rated value":"600 V","Product Function / Communication Function":"No","Undervoltage Release With Leading Contact":"No","reference code / according to IEC 81346-2":"Q","Product Extension / Optional / Motor Drive":"Yes","number of CO contacts / for auxiliary contacts":"3","Mechanical Service Life (Operating Cycles) / Typical":"15 000","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=100353&mlfb=3VA1110-1AA42-0CH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1110-1AA42-0CH0/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source to 3VA1110-1AA42-0CH0?","answer":"The 3VA1110-5ED36-0AC0 is a 3-pole MCCB in the same frame size, but it is a circuit breaker with overcurrent protection, not a switch disconnector. It lacks the undervoltage release and the trip alarm switch, and its 76.2 mm width will not fit the same 101.6 mm panel cutout. No direct second-source exists for this exact 4-pole disconnect configuration."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1110-1AA42-0CH0","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/3VA1110-1AA42-0CH0 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}}