The Schneider Electric VW3A7791 is a braking resistor designed for use with variable frequency drives (VFDs) to dissipate excess energy during regenerative braking. This component is integral to systems requiring controlled deceleration and energy management, commonly found in industrial automation environments where rapid stopping or frequent speed changes are necessary.

Technical details

• Product Type: Braking Resistor
• Manufacturer Series: Altivar (implied by VW3 prefix)
• Resistance Value: 3 x 6.7 Ohms
• Power Rating: 60 kW
• Enclosure Rating: IP23
• Configuration: Three individual 6.7 Ohm resistors, suitable for series or parallel connection depending on drive requirements.
• Functionality: Dissipates excess kinetic energy generated during motor deceleration, preventing overvoltage in the DC bus of a VFD.
• Construction: Designed for robust industrial operation, providing reliable performance in demanding environments.

Applications & compatibility

This braking resistor is typically employed in applications where VFDs are used for motor control and regenerative braking is a critical function. Common uses include packaging machinery, material handling systems, elevator drives, and any industrial process requiring precise speed control and efficient energy dissipation during deceleration phases.

Available from Industrial Automation Co as new, refurbished, or surplus stock, backed by a 2-year warranty with same-day shipping on in-stock items. Request a quote for the VW3A7791 or contact our technical team for cross-reference assistance with compatible Altivar drive components.