Alternating-current drives

Designed for HVAC pump and fan applications, the Altivar 21 variable-frequency alternating-current drive offers up to 40 hp at 240 v and up to 100 hp at 480 v. It can be integrated into building-management systems through internally mounted option cards.
Schneider Electric
Circle 114

Unit-cooler motors

Available on low-profile, low-velocity, and center-mount unit coolers, energy-efficient EC motors are up to 85-percent efficient, with test data showing a 51- to 60-percent increase over shaded-pole motors and a 30- to 40-percent increase over permanent split-capacitor motors.
Heatcraft Refrigeration Products LLC
Circle 115

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