The VW3A66701 is an enclosed braking resistor from the Schneider Altivar 66 drive accessory range, rated at 60 Ohm with 80 W average power dissipation. It provides a load path for regenerative energy during deceleration, protecting the drive's DC bus from overvoltage. Thermal protection is handled externally through the drive or a temperature control switch — the resistor itself does not carry an internal thermal fuse.
Physical fit and deployment
The enclosure measures 9.0 in (228 mm) high by 3.3 in (85 mm) wide by 2.7 in (68 mm) deep, with an IP30 rating — suitable for installation inside a ventilated electrical enclosure, not for washdown or outdoor exposure. Mounting provisions follow the Altivar 66 accessory footprint; verify clearance for the 80 W heat dissipation in the panel layout.