A variety of active cover plate configurations with prongs configured to contact side screw terminals of electrical receptacles are described. In one illustrative embodiment, an active cover plate includes a multi-gang face plate configured to be installed over a multi-gang light switch installation, the multi-gang faceplate including at least two apertures sized to accept a manually manipulatable element of switches in the multi-gang light switch installation. Prongs extend rearward from the multi-gang faceplate around at least one of the apertures.

An electrical equipment (1) for an electrical installation suitable is provided, connected to an electrical grid having at least: —a primary functional module (2) suitable and intended for carrying out a current interruption function, and an additional functional module (5) for carrying out at least one function requiring a power supply The function of the additional functional module (5) is selected, alone or in combination, from a function of measuring at least one physical parameter and/or a function of emitting and/or receiving electromagnetic radiation, and/or a display function, and/or an actuation function, and/or a data processing function, and/or a function of converting a physical signal into an electrical signal or vice versa.

A variety of active cover plate configurations with prongs configured to contact side screw terminals of electrical receptacles are described. In one illustrative embodiment, an active cover plate includes a multi-gang face plate configured to be installed over a multi-gang light switch installation, the multi-gang faceplate including at least two apertures sized to accept a manually manipulatable element of switches in the multi-gang light switch installation. Prongs extend rearward from the multi-gang faceplate around at least one of the apertures.

An electrical equipment (1) for an electrical installation suitable is provided, connected to an electrical grid having at least: —a primary functional module (2) suitable and intended for carrying out a current interruption function, and an additional functional module (5) for carrying out at least one function requiring a power supply The function of the additional functional module (5) is selected, alone or in combination, from a function of measuring at least one physical parameter and/or a function of emitting and/or receiving electromagnetic radiation, and/or a display function, and/or an actuation function, and/or a data processing function, and/or a function of converting a physical signal into an electrical signal or vice versa.

A variety of active cover plate configurations with prongs configured to contact side screw terminals of electrical receptacles are described. In one illustrative embodiment, an active cover plate includes a multi-gang face plate configured to be installed over a multi-gang light switch installation, the multi-gang faceplate including at least two apertures sized to accept a manually manipulatable element of switches in the multi-gang light switch installation. Prongs extend rearward from the multi-gang faceplate around at least one of the apertures.

An electrical switch for providing power from a power source to a component may include a voltage supervisor having an input and an output, a voltage divider, electrically coupled between the input of the voltage supervisor and ground, an RC filter electrically coupled to the output of the voltage supervisor, and a field-effect transistor having a first terminal coupled to the RC filter and a second terminal coupled to an output of the switch, the output configured to be electrically coupled to the component. A switch may additionally or alternatively include a light source electrically that emits light when power is provided from the input of the switch to the component, the light source arranged proximate a fuse so as to illuminate the fuse.

In one example, a modified electrical device includes a body and at least one connector on the body to make power and control connections with an active cover plate. In some embodiments, a wall plate system may include a modified electrical device or receptacle and/or an active cover plate.

In one example, a modified electrical device includes a body and at least one connector on the body to make power and control connections with an active cover plate. In some embodiments, a wall plate system may include a modified electrical device or receptacle and/or an active cover plate.

A variety of active cover plate configurations with prongs configured to contact side screw terminals of electrical receptacles are described. In one illustrative embodiment, an active cover plate includes a multi-gang face plate configured to be installed over a multi-gang light switch installation, the multi-gang faceplate including at least two apertures sized to accept a manually manipulatable element of switches in the multi-gang light switch installation. Prongs extend rearward from the multi-gang faceplate around at least one of the apertures.

An example visual indicator includes a base defining a light chamber and a first cover removably coupled to the base to cover the light chamber. A light assembly is positioned in the light chamber of the base. The light assembly has a first connector projecting from the base and the first connector is to pass through an access opening formed in an outer surface of a control panel when the visual indicator is coupled to the control panel. The base is to engage the outer surface of the control panel when the visual indicator is coupled to the control panel. The visual indicator is to enable an ingress protection rating of the control panel to be maintained when at least one of the visual indicator is removed from the control panel or the first cover of the visual indicator is replaced with a second cover different than the first cover.