The Square D HOM240GFIC Mini Circuit Breaker is a plug-in device with a maximum amperage of 40A and designed for home use in various rooms, garages, basements, and indoor/outdoor spaces. It features a ground fault circuit interruption capability and operates at 240V AC. This mini circuit breaker from Square D is ideal for electrical protection and has a compact design with dimensions of 3.13 inches in height and 2 inches in width. With a rotary knob control style, this circuit breaker offers easy on/off operation for reliable electrical connections in your home.