{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"VW3A7817","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"VW3A7817","canonicalUrl":"https://aoctrl.com/schneider/VW3A7817","factsUrl":"https://aoctrl.com/api/mcp/products/VW3A7817","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Altivar braking resistor, 0.7 Ohm, 330 kW at 50 °C, IP23, M10 bar connection, VW3A7817.","salesMarkdown":"## Braking resistor for Altivar drives, 0.7 Ohm, 330 kW The Schneider Altivar VW3A7817 is a high-power braking resistor rated at 0.7 Ohm, capable of dissipating 330 kW at 50 °C. This is sized for large motor loads on 400 VAC three-phase systems where regenerative energy from decelerating a high-inertia load (conveyor, centrifuge, flywheel) must be dumped as heat rather than fed back to the DC bus. The 0.7 Ohm value sets the peak braking torque curve — lower resistance pulls more current and stops faster, but stresses the drive's chopper transistor. At this power level, the resistor is a standalone cabinet-grade unit, not a DIN-rail module. IP23 protection means it sheds dripping water (up to 60° from vertical) but is not washdown-rated. Install in a ventilated enclosure or a dedicated resistor cabinet with clearance for convective airflow — the resistor generates substantial heat during a braking cycle, and the IP23 rating allows natural convection cooling while keeping tools and fingers out. Connection is via M10 bar wire terminals — these are high-current lugs, not spring-cage or screw-clamp. Plan for crimp lugs with a 10 mm hole and torque the connection to the manufacturer's specification. The physical footprint is substantial: 1700 mm high, 1140 mm wide, 820 mm deep. That's a floor-standing cabinet, not a panel-mount component. Verify floor loading and access for crane or fork-truck placement before committing the BOM line. ## Integration and protection Thermal protection is handled by an external thermal overload relay (not integrated into the resistor itself). The relay must be wired in series with the resistor circuit and set to the resistor's thermal capacity curve. Without it, a stalled braking cycle (e.g., a jammed conveyor that keeps the drive in regen) can overheat the resistor element and cause a fire risk. The overload relay is a separate line item — order it alongside the resistor. Operating ambient is 0 to 50 °C; storage range is -25 to 65 °C. If the resistor sits in a non-climate-controlled area (rooftop, unheated warehouse), the storage limit is fine, but the operating limit means the resistor must not be in a 55 °C machine cabinet without derating. The 330 kW rating is already stated at 50 °C — at higher ambients, the power must be reduced per the manufacturer's derating curve.","metaTitle":"Schneider Altivar VW3A7817 Braking Resistor, 0.7 Ohm, 330 kW","metaDescription":"Schneider Altivar VW3A7817 braking resistor, 0.7 Ohm, 330 kW at 50 °C, IP23. Active production. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Motor Control Accessories"],"specifications":{"Depth":"820 mm","Width":"1140 mm","title":"VW3A7817","Height":"1700 mm","Ohmic value":"0.7 Ohm","description":"braking resistor, Altivar, 0.7Ohm, 330kW, IP23","Protection type":"Thermal protection via thermal overload relay","lifecycle_stage":"mature","Range of product":"Altivar","Electrical connection":"M10 bar wire","Average power available":"330 kW at 50 °C","IP degree of protection":"IP23","Ambient air temperature for storage":"-25...65 °C","Ambient air temperature for operation":"0...50 °C"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"{'url': 'https://www.se.com/ae/en/product/download-pdf/VW3A7817?filename=Schneider+Electric_Altivar-71_VW3A7817.pdf', 'path_name': 'c1fb17f80fba40b714f7cb6468d75fc2.pdf', 'path_url': 'https://s3.lax.sharktech.net/viassion/datasheets/schneider_electric/c1fb17f80fba40b714f7cb6468d75fc2.pdf', 'status': 1}","sourceUrl":"https://www.se.com/ae/en/product/VW3A7817/braking-resistor-altivar-0-7ohm-330kw-ip23/"},"ai":{"faq":[{"question":"Where can I buy VW3A7817 and how do I get a price?","answer":"The VW3A7817 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What are the key ratings of VW3A7817?","answer":"The VW3A7817 is a 0.7 Ohm braking resistor rated for 330 kW at 50 °C, with IP23 protection. It measures 1700 x 1140 x 820 mm and connects via M10 bar wire terminals."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/VW3A7817","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/schneider/VW3A7817 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:47:38.189Z","lastPublished":"2026-07-22T19:47:38.189Z","indexable":true}}