A lockout, tagout (LOTO) device and associated implementation method for a switchable energy isolation device are provided. The isolation device includes first and second electrical terminal members and a slideable linkage disposed and in electrical communication therebetween for switching the electrical terminal members between isolated and non-isolated states. The LOTO device includes a cover member configured to extend over the terminal members and the linkage, and a fastener member coupled to the cover member. The fastener member is configured to engage the first or second electrical terminal member to secure the cover member to the isolation device. A tagging member is configured to engage the fastener member and a securing member engaged with the cover member, upon the cover member being secured to the isolation device, to prevent the fastener member from disengaging the first or second electrical terminal member without the tagging member disengaging the fastener member.

The device is used for locking an access for actuating two switching devices of high-voltage switchgear with the aid of a drive shaft transmitting drive force onto the two switching devices. In order to increase the operational safety of the high-voltage switchgear with little outlay, the locking device comprises a closing disk which is fastened on the drive shaft, a rocker bar arrangement containing at least four rocker bars, and a slider. The slider can be moved, on-site, into two positions, the first of which releases an access for the actuation on-site and blocks an access for the actuation from a remote location, and the second of which blocks the access for the on-site actuation and releases the access for the remote actuation.

A switch extension device comprises an elongate extension member and an actuation member. The elongate extension member has a distal end shaped to couple with an electrical switch and a proximal end for positioning remote from the electrical switch. The actuation member is coupleable to the proximal end of the elongate extension member. The actuation member is movable to move the extension member to actuate the electrical switch. Methods of operation are also described.

A fusible switch disconnect device includes a housing adapted to receive at least one fuse therein, and a switchable contact for connecting the fuse to circuitry. A tripping mechanism and control circuitry are provided to move the switchable contact to an open position in response to a predetermined electrical condition.

Disconnect operating handles for circuit breakers are configured with a rotary handle attached to an inwardly oriented shaft that connects to a gear assembly that translates rotational input to linear input. The disconnect operating handles include pivoting lockout levers that can automatically pop out to expose the lockout space for a padlock when a user touches the lever in an appropriate location.

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 circuit breaker can actuate to a closed condition and to an open condition. An assembly for the circuit breaker can include an obstacle that can be positioned to obstruct one form of actuation while permitting another form of actuation. The obstacle can be moved from the obstructing position to allow multiple forms of actuation. The obstacle may permit manual actuation of the circuit to an open state in any position.

A latch system for an electrical equipment enclosure includes a chassis and a latch arm, engaged with a circuit breaker, that moves between first, second, and intermediate arm positions. A handle operatively connected to the circuit breaker is movable between ON, TRIP, OFF, and RESET handle positions. The handle is operatively connected to the latch arm such that the latch arm is positioned in the second arm position when the handle is located in said RESET handle position. The latch arm spring biases the latch arm into the first or intermediate positions when the handle is in the ON, TRIP, or OFF handle position. A lockout plunger is connected to the handle to rotate with the handle and is movable between disengaged and engaged positions. The lockout plunger prevents movement of the handle from the OFF to the ON handle position when the lockout plunger is in its engaged position.

The device is used for locking an access for actuating two switching devices of high-voltage switchgear with the aid of a drive shaft transmitting drive force onto the two switching devices. In order to increase the operational safety of the high-voltage switchgear with little outlay, the locking device comprises a closing disk which is fastened on the drive shaft, a rocker bar arrangement containing at least four rocker bars, and a slider. The slider can be moved, on-site, into two positions, the first of which releases an access for the actuation on-site and blocks an access for the actuation from a remote location, and the second of which blocks the access for the on-site actuation and releases the access for the remote actuation.

Disconnect operating handles for circuit breakers are configured with a rotary handle attached to an inwardly oriented shaft that connects to a gear assembly that translates rotational input to linear input. The disconnect operating handles include pivoting lockout levers that can automatically pop out to expose the lockout space for a padlock when a user touches the lever in an appropriate location.