{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1225-1AA42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1225-1AA42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1225-1AA42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1225-1AA42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1225-1AA42-0AA0, switch disconnector in MCCB design, 4-pole, 250 A rated current at 40-50 °C, 70 mm depth, 140 mm width, 158 mm height, IP40 front, active lifecycle.","salesMarkdown":"The Siemens SENTRON 3VA1225-1AA42-0AA0 is a 4-pole switch disconnector in MCCB design, rated for 250 A continuous current at 40 °C through 50 °C without derating. It is a pure disconnecting means — no overload or short-circuit protection built in, per the product description. The 70 mm depth and 140 mm width fit standard MCCB panel cutouts, and the front terminal busbar connection keeps wiring clean in a distribution board. Above that, the derating curve drops linearly: 243 A at 55 °C, 237 A at 60 °C, 230 A at 65 °C, and 223 A at 70 °C. Maximum power loss is 57 W at full load — a meaningful figure for enclosure thermal calculations, especially in a sealed IP40 panel. ## Integration notes Mounts on a panel or enclosure backplate via the MCCB footprint: 158 mm height, 140 mm width, 70 mm depth. Busbar connection on the front terminals — no rear or plug-in option listed. An optional motor drive (product extension) is available for remote switching. No auxiliary contacts, undervoltage release, or communication function are built in; those would need external modules.","metaTitle":"Siemens 3VA1225-1AA42-0AA0 SENTRON Switch Disconnector, 250","metaDescription":"Siemens 3VA1225-1AA42-0AA0 SENTRON switch disconnector, 250 A rated current, 4-pole, MCCB design. IP40 front. Active production. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"70 mm","Width":"140 mm","Height":"158 mm","at 40 °C":"250 A","at 45 °C":"250 A","at 50 °C":"250 A","at 55 °C":"243 A","at 60 °C":"237 A","at 65 °C":"230 A","at 70 °C":"223 A","Trip Indicator":"No","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":"57 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Design Of The Auxiliary Switch":"Without","Design Of The Auxiliary Release":"without","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":"0","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":"https://cdn.aoctrl.com/6f6c1c8de3c0e59629aeff9d647652a5.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=569264&mlfb=3VA1225-1AA42-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1225-1AA42-0AA0/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional alternative to 3VA1225-1AA42-0AA0?","answer":"The 3VA2225-5HN42-0BB0 is a peer in the same SENTRON family, but it includes electronic overload protection and a different accessory set. The 3VA1225-1AA42-0AA0 is a pure switch disconnector without protection — if you need a disconnector only, the 3VA1 frame is the correct choice; if you need integrated overload and short-circuit protection, the 3VA2 series would be the functional replacement."},{"question":"Will 3VA1225-1AA42-0AA0 drop into a panel specified for 3VA2225-5HN42-0BB0?","answer":"The 3VA1 and 3VA2 frames share the same mounting footprint (158 mm height, 140 mm width, 70 mm depth) and busbar connection pattern, so the 3VA1225-1AA42-0AA0 will physically fit a panel cutout designed for the 3VA2225-5HN42-0BB0 without rewiring the busbars. However, the 3VA1 lacks the electronic trip unit and auxiliary contacts of the 3VA2, so the control wiring and protection scheme would differ."},{"question":"Where can I buy 3VA1225-1AA42-0AA0?","answer":"This part is sourced to order against an RFQ through independent industrial automation distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1225-1AA42-0AA0","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/3VA1225-1AA42-0AA0 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}}