An apparatus includes an enclosure, a power switch, a cable actuator, a power converter and a manual switch. The enclosure may be mechanically attachable to an external side of an industrial control panel. The power switch may be configured to switch electrical power. The cable actuator may be configured to control the power switch and may have an end connectable to a power disconnect handle of the industrial control panel. The power switch may be open while the power disconnect handle is in an off position and closed while the power disconnect handle is in an on position. The power converter may be configured to generate low-voltage power from the electrical power. The manual switch may be configured to switch the electrical power from a load side of the power switch to the power converter. A wire may transfer the low-voltage power through at least one aperture.

An apparatus includes an enclosure, a power switch, one or more power converters and a wire. The enclosure may include a door. The power switch may be mounted inside the enclosure and configured to switch electrical power from a line-side power line to a load-side power line. The load-side power line may be configured to transfer the electrical power outside of the enclosure to an industrial control panel. The one or more power converters may be configured to generate a low-voltage electrical power from the electrical power. The wire may be configured to transfer the low-voltage electrical power outside of the enclosure.

An apparatus includes an enclosure, a power switch, one or more power converters and a wire. The enclosure may include a door. The power switch may be mounted inside the enclosure and configured to switch electrical power from a line-side power line to a load-side power line. The load-side power line may be configured to transfer the electrical power outside of the enclosure to an industrial control panel. The one or more power converters may be configured to generate a low-voltage electrical power from the electrical power. The wire may be configured to transfer the low-voltage electrical power outside of the enclosure.

In an operation, the modular electrical power distribution panel (MEPP) is built and assembled with accessories of additional electrical components, instruments, and lighting controls installed in the MEPP. The MEPP can further include bus bars for circuit breakers to attach to as well as electrical rails constructed to allow one or more instruments that will be mounted in the MEPPs to electrically connect to the electrical rails. The MEPP rests on a floor and is supported through its frame from a ground up to be a free standing panel. The MEPP, the bus bars, electrical rails and accessories are modular shippable in five modular pieces or less that meet requirements set by a nationally recognized testing laboratory approval as assembled as a whole unit; and thus, eliminate a need for a second laboratory approval as the whole unit when assembled for a first time at a work site.

An electrical panel cover fastening system includes a disc and a post. The disc includes an outer surface, a first inner surface, a second inner surface, and a side surface. The outer surface is disposed on a first plane. The first inner surface is disposed on a second plane. The first plane is disposed substantially parallel with the second plane. The second inner surface is disposed on a third plane. The first inner surface is disposed adjacent to the second inner surface. The post includes a first end and a second end. The post is disposed on a first axis. The first end of the post is coupled to the first inner surface of the disc. Where the post is rotated, the disc is thereby also rotated about the first axis.

Systems, apparatus, methods, and techniques of assembly of discrete modules of a control panel are disclosed. The modules can be independently wired, tested, and installed into a control panel. Module definitions are defined specifying components to perform the electrical function, a mechanical arrangement of the components, electrical connections, and logical interactions of the module. A bill of materials can be generated based on a designation of a set of modules for a control panel and the module definitions. Modularly assembled control panels are disclosed. An assembly frame is described herein for temporarily mounting components of a module for independent assembly of a control module and for eventual removal and installation into a control panel frame. The assembly frame may include a faceplate frame and side frames and temporary mounting features.

Systems, apparatus, methods, and techniques of assembly of discrete modules of a control panel are disclosed. The modules can be independently wired, tested, and installed into a control panel. Module definitions are defined specifying components to perform the electrical function, a mechanical arrangement of the components, electrical connections, and logical interactions of the module. A bill of materials can be generated based on a designation of a set of modules for a control panel and the module definitions. Modularly assembled control panels are disclosed. An assembly frame is described herein for temporarily mounting components of a module for independent assembly of a control module and for eventual removal and installation into a control panel frame. The assembly frame may include a faceplate frame and side frames and temporary mounting features.

A handle for a compartment of a low, medium or high voltage switchgear includes: a body part; a hand grasping part; and a lock. The handle is movable from a closed position to an open position. When the handle is in the closed position, the handle is not useable to open a door of a compartment of the switchgear. When the handle is in the open position, the handle is useable to open the door of the compartment of the switchgear. In the open position, the hand grasping part is positioned so as to be graspable by a human user. In the closed position, a transition of an active element in the compartment of the switchgear from a quiescent state to an active or potentially active state activates the lock. Activation of the lock stops the handle from moving from the closed position to the open position.

A handle for a compartment of a low, medium or high voltage switchgear includes: a body part; a hand grasping part; and a lock. The handle is movable from a closed position to an open position. When the handle is in the closed position, the handle is not useable to open a door of a compartment of the switchgear. When the handle is in the open position, the handle is useable to open the door of the compartment of the switchgear. In the open position, the hand grasping part is positioned so as to be graspable by a human user. In the closed position, a transition of an active element in the compartment of the switchgear from a quiescent state to an active or potentially active state activates the lock. Activation of the lock stops the handle from moving from the closed position to the open position.

An apparatus includes an enclosure, a power switch, an absence of voltage detector controller, and an absence of voltage detector. The power switch is mounted inside the enclosure and configured to switch electrical power from a line-side power line to a load-side power line. The load-side power line is configured to transfer the electrical power outside of the enclosure to an industrial control panel. The absence of voltage detector controller is configured to determine a presence and an absence of each of a plurality of phases of the electric power on the load-side power line inside the enclosure. The absence of voltage detector is visible from external to the enclosure, has a switch, and is configured to illuminate one or more lamps indicating the absence of the electrical power on a corresponding one or more of the plurality of phases in response to a pressing of the switch.