Variable Speed Drives

Our VSD Series of variable speed drives offer a broad range of competitively priced open drives and drives with bypass, specifically engineered for Heating, Ventilating and Air-Conditioning (HVAC) applications. Modular construction allows the VSD Series to be easily adapted to customer requirements, while minimizing drive size and making it less complex.

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Micro Drives

Our VSD Series Micro Drives are a cost-effective solution for low-horsepower applications. Available supply voltages include 115 V, 230 V, 480 V and 575 V models. Micro Drives are designed to provide variable speed control for three-phase motor applications up to 10 horsepower.

Open Drives

Our VSD Series Variable Speed Open Drives are specifically engineered for Heating, Ventilating and Air Conditioning (HVAC) fan and pump applications. The power unit makes use of the most sophisticated semiconductor technology and a highly modular construction that can be easily adapted to customer needs. The devices are plenum-rated and available in enclosure ratings that include UL Type 1 or Type 12. Damper interlock is standard.

Bypass Drives

Our VSD Variable Speed Enclosed Drives are available in a two- or three-contactor design with features, function and form that allow the drive and bypass to become an integrated product. This Drive comes standard with an input circuit breaker integrated into the drive and bypass design.

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