An Enhanced Energy Reducing Maintenance Setting (EERMS) device is disclosed. The EERMS device includes an EERMS switch having a normal/OFF mode and a maintenance/ON mode, a IED protection relay operatively connected to the EERMS switch and configured to activate maintenance mode by receiving an IED input when the EERMS switch is switched to maintenance/ON mode, a key-solenoid lock device configured to trap a key of an EERMS panel, wherein the key-solenoid lock cylinder is energized to release the trapped key by closing of IED output NO dry auxiliary contacts, and a circuit breaker panel door comprising a circuit breaker lock cylinder mechanism interlocked with the EERMS switch. The circuit breaker lock cylinder mechanism receives and subsequently re-traps the key released by the key-solenoid lock cylinder from the EERMS panel. The circuit breaker lock cylinder mechanism is interlocked with the EERMS switch by being operatively connected to the key-solenoid lock device.

Implementations of the subject matter described herein provide an apparatus for use in a switch. The apparatus includes: a handle including a first slot; a mode button operable to change an operation mode of the switch, the mode button including a second slot; a slider coupled to the mode button and movable in a first direction in association with a movement of the mode button, the slider including a first block; a lever operable to be opened in a rotatable manner and including a pin, wherein when the mode button is set at a service position, the first block is received in the first slot to maintain the handle; and in response to the lever being opened in the rotatable manner, the pin is operable to pass through the second slot to prevent the movement of the mode button. Such apparatus herein provides a lock mechanism that may prevent mistake operation between different operation modes.

In one embodiment, a method includes, by a switch device, determining a position of an on/off input selector, the on/off input selector being located within a switch device, in response to determining the position of the on/off input selector is in an off position, operating one or more solid state switches to suspend current to one or more load-side terminals, determining whether the one or more load-side terminals of the switch device are electrically isolated, in response to determining the one or more load-side terminals of the switch device are electrically isolated, generating a prompt via a graphical user interface, and receiving, via the graphical user interface, one or more inputs, the one or more inputs including at least a request for safety lockout instructions.

A circuit breaker is configured to ensure electrical safety when working on its circuits. The circuit breaker comprises a housing with an exterior boundary. The housing includes an “integrated” Lock-Off feature. It is integrated to one or more housing components of the circuit breaker not as a separate component to achieve most simplicity and least space used as compared to an “add-on” accessory based Lock-Off feature. The “integrated” Lock-Off feature has a feature that is configured to receive a shackle or a shank of a padlock. The circuit breaker further comprises a built-in Lock-Off mechanism including a handle that is configured to move relative to the feature. The built-in Lock-Off mechanism in combination with the Lock-Off feature is configured to prevent handle from being turned ON with the use of padlock. The padlock prevents circuit breaker from turning ON by impeding the handle from moving to an ON-position.

Circuit breakers with a housing with a line side and a load side and an electronically controlled lock-out lock member coupled to the housing configured to electronically controllably travel between a first position and a second position. In the second position, the lock member is in a lock-out position and prevents the handle from moving to an ON position associated with electrical current conduction and in the first position the lock member is translated to a position that allows the handle to move to the ON position.

A handle of a manual operation mechanism of a circuit breaker, which includes an operating handle, a padlock device, and a locking shaft, wherein a middle of the padlock device is pivotally arranged on the operating handle, a front end of the padlock device is connected with the locking shaft, the padlock device is connected with the operating handle through a first driving member, a rear end of the padlock device is in limit fit with a locking mechanism, a padlock hole is arranged in the rear end of the padlock device, and the padlock hole is shielded by the operating handle.

The invention relates to a protective collar for at least partially receiving an actuating element which extends through a housing of a control unit and projects beyond an outer side of the housing. The protective collar has a base with a through-opening and a first circumferential collar radially spaced from the through-opening and extending from an upper surface of the base in a first direction. The first collar has at least two cut-outs such that the first collar forms at least two wings, wherein at least one of the wings has at least one predetermined breaking point extending in the circumferential direction.

A locking device includes: a housing intended to be mounted on an electrical switchboard between a first switching apparatus and a second switching apparatus, each of the switching apparatuses having a control lever able to move between a lower position, corresponding to an open state, and an upper position, corresponding to a closed state, a locking member able to move in rotation between: a first locking position, in which the locking member blocks the control lever of the first switching apparatus in the open position, and a second locking position, in which the locking member blocks the control lever of the second switching apparatus in the open position.

A method for consigning a function of an electrical device includes: a) receiving a request to consign a function implemented by a sub-assembly of the electrical device, the request being transmitted by a client terminal connected to the control unit via a short-range communication link; b) generating a digital key including a unique identifier; c) storing one copy of the generated key in a memory of the control unit and sending another copy of the generated key to the client terminal that transmitted the request; d) consigning the function so as to prevent this function of the device from being used by the control unit as long as the consignation is active.

The present invention refers to a detachable knob that can be easily and quickly detached and attached repeatedly from a switchgear. The detachable knob includes: a knob housing configured to be manually rotated about a rotation axis “X”, and anchoring means placed inside the knob housing. A plunger is arranged inside the housing and is axially displaceable along the rotation axis “X”, wherein the plunger is configured to bring the anchoring means from their engaged position to their disengaged position and vice versa. The plunger is axially displaceable relative to the anchoring means between two stable axial positions at axis “X”, namely: a pushed-down position in which the plunger remains stable and force the anchoring means to their engaged or to their disengaged position, and a release position in which the plunger remains stable and in which the anchoring means are in the other position.