Bussman BP/SRU Fuse Box Cover Unit 2 1/4 inch handy box cover Plug-fuse box cover units provide a simple inexpensive way to protect small motors with buss dual element fusetron or fustat Plug fuses Box cover units are easily installed in standard electric boxes Using fuses sized at the ampere rating of a motor or slightly larger, will provide optimum overload and short-circuit protection Quantity per card: 1 Includes fuseholder, plus a plug-in receptacle, switch, pilot light Covers fit standard outlet or switch boxes, making it easy to turn an ordinary outlet or switch box into a motor protective device Units are made with Edison base fuseholder so they will take dual element plug fuse or proper size adapter for dual element fuse U.L. listed