The QLs are hydraulic magnetic MCBs, therefore they do not require the temperature variation compensation associated with most thermal breakers. The devices operate in temperatures from 40 to 140°F. The QL is suitable as a replacement for low-current fuses and a wide range of equipment protection.

Circuit Breaker Industries Inc., 35 E. Uwclan Ave., Suite 328, Exton, PA 19341, (610) 524-9949,