{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1112-1AA36-0AE0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1112-1AA36-0AE0","canonicalUrl":"https://aoctrl.com/siemens/3VA1112-1AA36-0AE0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1112-1AA36-0AE0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1112-1AA36-0AE0, switch disconnector in MCCB design, 3-pole, 125 A rated continuous current, 4 auxiliary switches HQ, front terminal connection, IP40 front.","salesMarkdown":"The Siemens 3VA1112-1AA36-0AE0 is a SENTRON switch disconnector in a 3VA MCCB-style frame, rated for 125 A continuous current (Iu) across 3 poles. It is not a molded case circuit breaker — there is no overload or short-circuit protection inside this unit. The product designation and the description both make this clear: it is a switch disconnector only, designed for isolation and switching duty where the upstream protection handles the fault interruption. The frame is the IEC 160 A size, so the 125 A rating leaves thermal headroom. It carries a short-time withstand of 2 kA for 1 second — enough to ride through a downstream fault while the upstream breaker clears, but not a high-fault device itself. ## Auxiliary switching and connectivity This variant ships with 4 auxiliary switches (HQ type — high-capacity, high-reliability contacts), giving you 4 CO (changeover) contacts for status feedback, interlocking, or PLC inputs. That is a lot of auxiliary capacity for a 3-pole switch disconnector; most MCCB-style switches come with 1 or 2. If your panel needs to signal open/closed status to multiple destinations, this saves adding an external auxiliary block. Connection is via front terminals (clamp-type, not box lug) for the main circuit. The terminal arrangement is front-facing, which means the switch can be panel-mounted with busbars or cables landing from the front — typical for distribution panels where rear-access is tight. The optional motor drive (not included here but supported as an accessory) allows remote switching if you need to add it later. ## Where it fits — ratings and environment Rated for AC operation up to 690 V 50/60 Hz and DC up to 500 V. That is typical for a switch disconnector in this class — designed for daily isolation but not for frequent motor starting. If you need a switching device for repeated load make/break, look at a contactor instead. The 3-pole frame width of 76.2 mm (3 inches) is standard for the 3VA 160 A frame — it occupies the same footprint as the equivalent MCCB version. If you are replacing a 3VA1110-5ED36-0AC0 or 3VA1112-5EE32-0AA0, the mounting hole pattern and busbar spacing are identical; the swap is mechanical, not a re-panel job.","metaTitle":"Siemens 3VA1112-1AA36-0AE0 Switch Disconnector, 125 A, 3-Pol","metaDescription":"Siemens SENTRON 3VA1112-1AA36-0AE0 switch disconnector, 125 A rated continuous current, 3-pole, 4 HQ auxiliary switches. Current lifecycle stage. IP40 front. Sourced to order again","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","Limited To 1 S":"2 kA","Trip indicator":"No","Number of poles":"3","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":"No","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","Power loss [W] / maximum":"38 W","Auxiliary contact version":"4 auxiliary switches HQ","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Rated continuous current Iu":"125 A","Rated insulation voltage Ui":"800 V","Design of the auxiliary release":"Without auxiliary release","Protection class IP / on the front":"IP40","Reference code / acc. to DIN EN 81346-2":"Q","Max. rated operational voltage Ue with DC":"500 V","Undervoltage Release With Leading Contact":"No","Product extension / optional / motor drive":"Yes","Number of CO contacts / for auxiliary contacts":"4","Max. rated operational voltage Ue with AC 50/60Hz":"690 V","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=238065&mlfb=3VA1112-1AA36-0AE0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1112-1AA36-0AE0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1112-1AA36-0AE0 and get current pricing?","answer":"This part is sourced to order through independent distribution. Submit an RFQ for current availability and pricing — confirmed at quote time."},{"question":"What is the difference between this switch disconnector and a 3VA1110-5ED36-0AC0 molded case circuit breaker?","answer":"The 3VA1112-1AA36-0AE0 is a switch disconnector only — no overload or short-circuit protection. The 3VA1110-5ED36-0AC0 is a full MCCB with a TM210 thermal-magnetic trip unit rated at 100 A. Both share the same 3-pole 160 A frame, same 70 mm depth and 76.2 mm width, so they are mechanically interchangeable in the panel. The choice comes down to whether you need integral protection (MCCB) or just isolation (switch disconnector) with upstream protection."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1112-1AA36-0AE0","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/3VA1112-1AA36-0AE0 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}}