Industrial Y879539 Lockout Plug 3-In-One Device is a lockout plug used in lockout/tagout procedures to prevent energization of equipment. It carries the Y879539 model and the Prinzing PL023 designation and features a 1-1/4" diameter. The 3-In-One device name reflects its single unit intended for use with compatible lockout components in industrial electrical disconnects during maintenance or servicing.
