Abstract: An electrical pin and sleeve device is disclosed. The pin and sleeve device incorporating one or more features to facilitate easier assembly. For example, the pin and sleeve device may include an interrupted thread or a multi-start thread for coupling a first or main housing portion to a second or front housing portion of the device. In this manner, the outer housing can be assembled together with minimal number of turns to facilitate easier and faster assembly. Additionally, and/or alternatively, the front housing portion and the main housing portion may include a key such as, for example, a releasable lock (e.g., a spring plunger assembly) for indexing/indicating the proper rotational position of the front housing relative to the main housing to limit or prevent over-rotation. Additionally, and/or alternatively, a hollow O-ring may be positioned between the first and second housing portions.

Abstract: A dimmer is provided for controlling power to a load, the dimmer having a ground leakage power supply deriving power from a connection of the dimmer to ground. The power supply may be a switching-mode power supply that can be the sole or primary power supply to power operation of the dimmer, including operation of the controller.

Abstract: An electrical pin and sleeve device is disclosed. The pin and sleeve device incorporating one or more features to facilitate easier assembly and use. For example, the pin and sleeve device may include one or more alignment or keys between, for example, the electrical contacts and the thru holes for receiving the contacts formed in the device to prevent improper insertion of the contacts within the device. Additionally, and/or alternatively, one or more alignment or keys between components of the pin and sleeve device such as, for example, between the contact carrier and the body member to prevent improper coupling of the body member relative to the contact carrier or subsequent rotation thereof. Additionally, and/or alternatively, the pin and sleeve device may include one or more tapered or funneled surfaces for preventing wire splaying during insertion of the electrical strands into the contacts.

Abstract: A hermaphroditic connector for use in single or multiple twisted-pair connectivity applications is constructed using a small number of parts having a simple but durable assembly. The connector housing comprises an elongated form factor that, when mated with a similar hermaphroditic connector, forms a rigid overlapping shield around the electrical contacts of the two connectors. While unmated, the conductive tines within the connector have a default curved profile that facilitates reliable connectivity with tines of a mating connector. When the connector is mated with a similar connector, the tines are deformed to a flatter profile by support plates within the connectors, yielding a shape more conducive to high-frequency signal applications. The shape of the tines also yields multiple in-line redundant contact points to ensure reliable connectivity without adding to the width of the connector.

Abstract: Operating an electrical load controller includes, in one aspect, detecting zero-crossings of an AC waveform, determining periods each corresponding to a full cycle of the AC waveform, determining a frequency of the AC waveform based on the determined periods, and controlling a supply of AC power to a load based thereon using the determined frequency to fire a switching circuit of the electrical load controller.

Abstract: Operating an electrical load controller includes, in one aspect, predetermining a duration of time based at least in part on a frequency of an alternating current (AC) waveform, the alternating current (AC) waveform oscillating though full cycles, each full cycle comprising a positive half cycle and a negative half cycle; selecting a detection window of time equal in duration to the predetermined duration of time, the selected detection window extending from a selected first time to a selected second time and straddling an expected time of a next zero-crossing of the AC waveform; monitoring a zero-crossing signal for a zero-crossing indication, of the next zero-crossing, occurring within the selected detection window; ascertaining a time of the next zero-crossing based on the monitoring; and selectively controlling a supply of AC power to a load, wherein the controlling uses the ascertained time of the next zero-crossing of the AC waveform to fire a switching circuit of the electrical load controller.

Abstract: An electrical pin and sleeve device is disclosed. The pin and sleeve device incorporating one or more features to facilitate easier assembly and use. For example, the pin and sleeve device may include one or more indicators (e.g., LEDs) mounted on a printed circuit board (PCB) for providing power supply indication, and/or status or fault notification. Additionally, and/or alternatively, the PCB may be adapted and configured to be inserted into one or more slots formed in the contact carrier and/or the body member of the device. Additionally, and/or alternatively, the PCB may receive electrical power via clips coupled to electrical wires or leads, the clips electrically contacting the pins and/or sleeves of the device.

Abstract: A fiber optic pigtail assembly that includes a plurality of optical fibers and at least one optical connector. The optical fibers each have a first end opposite a second end. The plurality of optical fibers are ribbonized together from the first end of each of the plurality of optical fibers partway toward the second end of each of the plurality of optical fibers and form a ribbonized end portion. The at least one optical connector is connected to the second end of each of the plurality of optical fibers. A loose portion of the plurality of optical fibers is positioned between the at least one optical connector and the ribbonized end portion.

Abstract: A zero-crossing detection method, and devices incorporating the method, enable a selectively enabled bias to pull-up a zero-crossing signal, thereby enabling monitoring of the zero-crossing of both half-cycles of the alternating current (AC). This improves synchronization of the device in noisy environments and enables the detection of dimming problems during either half-cycle. Aspects can detect improper dimmer firing events on either polarity of the power cycle and restore normal dimmer operations when needed.

Abstract: An illuminated electrical load control is provided for controlling electrical power to a light-emitting diode (LED) lighting load. The load control includes a wall-box mounted housing, and an electrical switch assembly disposed at least partially within the housing. The switch assembly includes an actuator coupled to transition the switch assembly between an ON state, where AC current flows to the LED lighting load, and an OFF state, where current is interrupted from flowing to the LED lighting load. Further, the load control includes an illumination assembly with an indicator light to illuminate, at least in part, the load control when the switch assembly is in OFF state, and a current-limiting circuit connected across terminals of the switch assembly, and configured to limit leakage current through to the LED lighting load to below an activation current of the LED lighting load when the switch assembly is in the OFF state.

Abstract: The present disclosure relates to arc fault detection in an electrical switch apparatus. In aspects of the present disclosure, an arc fault electrical switch apparatus includes a conductive path, a switch configured to interrupt electrical current in the conductive path, a current sensor in electrical communication with the conductive path and configured to measure the electrical current to provide current measurements, and a controller. The controller is configured to execute instructions to sample the current measurements to provide current samples, computing an estimated signal-to-noise ratio of the electrical current based on at least a portion of the current samples, determine whether the signal-to-noise ratio is less than a predetermined threshold, and activate the switch to interrupt the electrical current in the conductive path, if the signal-to-noise ratio is less than the predetermined threshold.

Abstract: The present disclosure generally provides controls, apparatus, systems and methods for controlling a ventilation mechanism to efficiently manage the relative humidity of an area. The controls, apparatus, systems and methods utilize sensed relative humidity information and one or more inputs to provide for efficient automatic and/or manual control a ventilation mechanism in response to high humidity events within the area. The controls, apparatus, systems and methods provided herein efficiently automatically activate a ventilation mechanism through the use of sensed relative humidity information and user input. The controls, apparatus, systems and methods provided herein efficiently automatically deactivate a ventilation mechanism through the use of sensed relative humidity information and user input.

Abstract: An arc fault circuit interrupter is disclosed. This arc fault circuit interrupter can include any one or more of three different sensors such as a high frequency sensor, and any one of lower frequency sensors such as a current sensor or a differential sensor. The arc fault circuit interrupter can be configured as an in line arc fault circuit interrupter installed in a wall box. In addition, the arc fault circuit interrupter can include a processor configured to determine any one of a series arc fault, or a parallel arc fault.

Abstract: A wall-mounted enclosure assembly comprising knockouts formed through one or more enclosure walls is provided with a layer of metallic or polymeric flame-resistant material affixed to the exterior or interior surface of the one or more enclosure walls to block the knockout's perforations, which would otherwise remain open. This seals the unused knockouts and prevents hot molten materials or flames from escaping the enclosure through the knockouts' perforations in the event of a destructive equipment malfunction within the enclosure. Unused knockouts remain visible through the tape, and consequently the tape does not prevent installers from easily locating and removing selected knockouts.

Abstract: An electrical device such as, for example, a mechanical interlock including one or more interconnected electrical components configured to detect or monitor an operational state or condition is hereby disclosed. In one embodiment, the electrical device may include a communications bus, one or more sensor modules coupled to the communications bus, and a sensor hub module coupled to the communications bus, wherein the sensor module(s) generate signal(s) including data indicating a sensed condition. A communications module coupled to the sensor hub module may transmit the data indicating the sensed condition to a remote device, a remote computer network, or a remote cloud service. Additionally, and/or alternatively, the device may include a water detection sensor including first and second curved conductive traces. Additionally, and/or alternatively, the device may include a voltage limiter circuit providing a DC output voltage from a high voltage AC input.

Abstract: An improved mechanical interlock is disclosed. The mechanical interlock includes one or more features to facilitate a more robust design, easier assembly, and/or enhanced capabilities. For example, the mechanical interlock may include an interlock latch operatively associated with an external handle assembly and an internal connector. The interlock latch being directly coupled to a shaft coupled to the handle assembly, thus providing an improved and more robust latching mechanism. The mechanical interlock may also include one or more keys (e.g., a Poke-Yoke feature) to facilitate easier assembly and/or to prevent human errors caused by improper assembly. The mechanical interlock may also include an integrated magnetic switch and monitoring system to ensure that accurate location of the handle assembly is known.

Abstract: An improved mechanical interlock is disclosed. The mechanical interlock includes one or more features to facilitate easier assembly and/or manufacturing. Additionally, and/or alternatively, the mechanical interlock may include one or more features provided increased protection. The mechanical interlock may include a baseplate arranged and configured to receive one or more components thereon so that the components can be coupled and wired as a sub-assembly prior to inserting into the enclosure. The mechanical interlock may include an adapter positioned between a connector and a contact carrier bracket to enable variously sized connectors to be coupled to a common contact carrier bracket. The adapter may include one or more keys to prevent improper coupling of the adapter. The contact carrier bracket may be arranged and configured to receive one or more PCBs to provide an increased level of protection for the PCB.

Abstract: An electrical pin and sleeve device is disclosed. The pin and sleeve device incorporating one or more features to provide improved protection (e.g., sealing) from the environment (e.g., rain, water, dust, etc.). Additionally, and/or alternatively, the pin and sleeve device may include one or more features to facilitate easier assembly and use. For example, the outer housing of the pin and sleeve device may include an inwardly extending projection defining a shelf for contacting a grommet positioned within the outer housing of the pin and sleeve device. Additionally, and/or alternatively, the pin and sleeve devices may incorporate a cable boot to provide an improved seal between the electrical cable and the clamp nut to prevent the ingress of water, dust, or the like.

Abstract: An electrical pin and sleeve device is disclosed. The pin and sleeve device incorporating one or more features to facilitate easier assembly and use. For example, the pin and sleeve device may include one or more indicators (e.g., LEDs) mounted on a printed circuit board (PCB) for providing power supply indication, and/or status or fault notification. Additionally, and/or alternatively, the PCB may be adapted and configured to be inserted into one or more slots formed in the contact carrier and/or the body member of the device. Additionally, and/or alternatively, the PCB may receive electrical power via clips coupled to electrical wires or leads, the clips electrically contacting the pins and/or sleeves of the device.

Abstract: Embodiments of the present disclosure provide techniques and configurations for a communications network with data and power provision over communication channels. In some embodiments, the network may comprise a network control apparatus having a plurality of communication channels, to connect one or more devices with the network, wherein the network control apparatus is to provide data communications between a device of one or more devices and the network via a communication channel, and to provide power to the device via the communication channel. The network may further comprise a power management block coupled with the network control apparatus, to control the provision of power to the device of the one or more devices, which may include determining whether the communication channel carries a power level in excess of a threshold associated with the communication channel.