Square D DU221RB Safety Switch

Suitable for use with service entrance equipment this general-duty safety switch provides a 10kA short-circuit current rating when used with or protected by a Class H fuse. It has a 100kA short-circuit current rating when used with or protected by a Class R cartridge-type fuse with a Class R fuse kit installed. Features include visible blades for positive identification that the switch is Off a quick-make quick-break operating mechanism and spring-reinforced plated-copper fuse clips. The lugs are suitable for aluminum or copper conductors. There are multiple padlock provisions in the Off position. An equipment grounding kit available separately is required.