Square D
The Class 8839 Econo-flex(tm) Type 3R adjustable-speed drive fromSquare D(Palatine, IL) features a thermal management system that permits equipment operation in -10 to 50 degrees C ambient temperatures. Other features include a coordinated circuit breaker for short circuit protection, a UL listing per 508-C for both drive and bypass operation, and industrial- rated control operators and pilot devices.