The KD1-10 is a miniature supplementary protectors hydraulic Magnetic Circuit Breaker with a pushbutton circuit protector provides circuit protection similar to a fuse but does not require replacement after a fault, easily installed in a 5/8inch round or D-shaped panel cut-out similar to that used on conventional panel mounted fuse holders. It can be mounted from either the front or rear and is held in place by special hardware. Its 1/4-inch quick-connect terminals are solderable.