{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1110-1AA42-0AH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1110-1AA42-0AH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1110-1AA42-0AH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1110-1AA42-0AH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1110-1AA42-0AH0, switch disconnector in MCCB design, 4-pole, 100 A, 70 mm depth, IP40 front, with 2 auxiliary switches + 1 trip alarm switch HQ.","salesMarkdown":"That flat thermal curve is unusual; most MCCB-frame switches start pulling current back above 40 °C. This one holds 100 A all the way to 70 °C. Rated for 690 V AC and 600 V DC operation, with an insulation voltage of 800 V, it handles line-to-line isolation on 400 V and 480 V distribution panels cleanly. The auxiliary switches are factory-fitted and wired to the front terminal arrangement, which uses busbar connection for the main circuit — so it drops onto a standard SENTRON busbar system without extra adapters. Power loss is 38 W maximum at rated current, which matters for thermal management inside a sealed enclosure. Dimensions are 70 mm deep, 101.6 mm wide, and 130 mm tall — the 101.6 mm width (4 inches) is the standard 4-pole MCCB footprint for the SENTRON 3VA frame 160. The front terminal arrangement with busbar connection means the main power conductors land on the busbar system, not directly on the device — plan for busbar takeoffs in your panel layout. ## What it is not — and why that matters Compared to the 3VA1110-5ED36-0AC0 (a 3-pole MCCB with TM210 trip), this 4-pole disconnector is 25.4 mm wider (101.6 mm vs 76.2 mm) and has a lower mechanical life (15,000 vs 20,000 cycles). The breaker also has a higher power loss (25 W vs 38 W) despite being 3-pole — the disconnector's higher loss reflects the continuous-duty busbar path without a trip mechanism. The two parts are not electrically interchangeable; the disconnector lacks the protection function entirely.","metaTitle":"Siemens 3VA1110-1AA42-0AH0 SENTRON Switch Disconnector, 100","metaDescription":"Siemens SENTRON 3VA1110-1AA42-0AH0 switch disconnector, 100 A continuous at 40-70 °C, 4-pole, IP40 front, 70 mm depth. Active production. Sourced 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","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":"No","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":"Without auxiliary release","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=512998&mlfb=3VA1110-1AA42-0AH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1110-1AA42-0AH0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1110-1AA42-0AH0?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What is the closest functional second-source to 3VA1110-1AA42-0AH0?","answer":"The 3VA1110-5ED36-0AC0 is a peer in the same frame size but it is a 3-pole MCCB with a TM210 thermal-magnetic trip unit, not a switch disconnector. It provides overload and short-circuit protection that this disconnector lacks, and it is 25.4 mm narrower. They are not direct substitutes."},{"question":"Will 3VA1110-1AA42-0AH0 drop into a panel specified around 3VA1110-5ED36-0AC0 without rewiring?","answer":"No. The disconnector is 4-pole (101.6 mm wide) versus the 3-pole breaker (76.2 mm wide), so it will not fit the same DIN rail or busbar spacing without panel modification. The main circuit connection is also busbar-type on the disconnector versus box terminal on the breaker."},{"question":"What compliance documentation does this part carry?","answer":"The part is designed to IEC 81346-2 (reference code Q) and carries IP40 front protection. Specific compliance marks (UL, CSA, CE) are not listed in the available specifications; verify with the manufacturer for your jurisdiction."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1110-1AA42-0AH0","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/3VA1110-1AA42-0AH0 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}}