{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1112-1AA36-0CA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1112-1AA36-0CA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1112-1AA36-0CA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1112-1AA36-0CA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1112-1AA36-0CA0, switch disconnector in MCCB design, 3-pole, In=125 A, without overload or short-circuit protection, front terminal connection, undervoltage release 120-127 V AC 50/60 Hz.","salesMarkdown":"It is designed for applications where you need a manual disconnect with visible isolation, not a circuit breaker — think load-break switch duty ahead of a VFD or as a panel main isolator where the upstream device handles fault clearing. Rated 690 V AC and 500 V DC, so it handles standard 400 V three-phase systems with headroom and can switch DC loads up to 500 V — useful for battery banks or DC bus isolation. No auxiliary contacts are included, so if you need status feedback to a PLC, you'll add a separate auxiliary switch block. For daily switching in a production line, that's years of service; for frequent cycling (multiple times per shift), consider a contactor instead. The IP40 front protection means it's suitable for clean indoor panel environments; no washdown rating here. Footprint is 76.2 mm wide, 130 mm tall, 70 mm deep — a standard 3-pole MCCB cutout. Front terminal connections with clamp-type terminals accept lug or cable. The design accepts an optional motor drive for remote switching, and the UVR coil draw is included in the loss figure.","metaTitle":"Siemens 3VA1112-1AA36-0CA0 SENTRON Switch Disconnector, 125","metaDescription":"Siemens SENTRON 3VA1112-1AA36-0CA0 switch disconnector in MCCB design. 125 A continuous, 3-pole, 690 V AC / 500 V DC. Undervoltage release 120-127 V AC. 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":"76.2 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","Trip Indicator":"No","Number Of Poles":"3","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":"Without","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":"500 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":"0","Mechanical Service Life (Operating Cycles) / Typical":"15 000","Type Of Electrical Connection / For Main Current Circuit":"Terminal 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=454727&mlfb=3VA1112-1AA36-0CA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1112-1AA36-0CA0/alternatives.json"},"ai":{"faq":[{"question":"What is the difference between this switch disconnector and the 3VA1112-5EF32-0CA0 MCCB?","answer":"The 3VA1112-1AA36-0CA0 is a switch disconnector only — no overload or short-circuit protection. The 3VA1112-5EF32-0CA0 is a full molded case circuit breaker with a TM240 thermal-magnetic trip unit and LI protective function. Same frame, same footprint, same 125 A continuous rating, but the breaker adds adjustable overload and short-circuit protection. If your circuit already has upstream protection and you only need a disconnect, the -1AA36 is the correct choice; if you need integrated protection, step to the -5EF32."},{"question":"Where can I buy 3VA1112-1AA36-0CA0?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commitment."},{"question":"What compliance documentation is available for this part?","answer":"As a standard Siemens SENTRON catalog item, it carries CE marking for the European market and is designed to IEC 60947-3 standards for switch-disconnectors. RoHS and REACH declarations are available from Siemens on request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1112-1AA36-0CA0","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/3VA1112-1AA36-0CA0 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}}