A lockout device for preventing an electrical switch from being turned either ON or OFF while the lockout device is attached to the switch. The present lockout device can be capable of quick and easy attachment to the switch and can be secured to the switch with a padlock or similar locking device. The present lockout device can also comprise a peg for attaching a lockout tag, which prevents the tag from being removed while the lockout device is connected to a switch.

A locking device for a rocker switch that has an elongated member having a top edge, a bottom edge, opposite ends, a front facing surface and a rear facing surface. A toggle member is pivotally mounted to the front facing surface. The toggle member pivots between a first toggle position that extends below the bottom edge of the elongated member and a second toggle position that does not extend below the bottom edge. The rear facing surface of the elongated member is mounted to the switch plate cover, the bottom edge of the elongated member adjacent the first end of the rocker switch. When the first end of the rocker switch is pivoted to the first position the toggle may be pivoted to the first toggle position to extend below the lower edge of the elongated member to overlie the first end of the rocker switch to lock the rocker switch in the first position. The toggle may be pivoted to the second toggle position to unlock the rocker switch from the first position. A locking device may be provided for each end of the rocker switch. Locking devices built into the ends of the rocker switch are also described.

A lockout device for securing a rotary circuit breaker switch is provided. The lockout device is provided in the form of an outer housing having a plurality of side walls extending away from a base wall to define a cavity and at least one of the side walls having a slot formed therein. The lockout device further includes an inner housing received within a portion of the cavity. The inner housing has a first component and a second component to receive the rotary circuit breaker switch therein. The lockout device has a biasing element positioned between the base wall and the inner housing to translate the inner housing axially relative to the outer housing, and a fastener with a thumbwheel having at least one projection designed to be positioned within the slot of the outer housing to hold the fastening mechanism and the lockout device in a locked position.