Abstract: A self-calibrating current sensor for sensing the state of the current passing through a load line enclosed within a housing comprises a sensor disposed adjacent the load line for sensing a current passing through the load line, the sensor having an output at which a signal indicative of the level of current passing through the load line is present, the sensor being positioned with the housing, a binary input circuit configured to generate at least one binary signal, the binary input circuit being configured to change the level of the at least one binary signal without the need of opening the housing, and a controller circuit having a first input coupled to the output of the sensor for receiving the signal indicative of the level passing through the supply line and having a second input coupled to the binary input circuit for receiving the at least one binary signal, the controller being configured to provide a signal indicative of the status of the current in the load line on an output.

Abstract: A self-calibrating current sensor for sensing the state of the current passing through a load line enclosed within a housing comprises a sensor disposed adjacent the load line for sensing a current passing through the load line, the sensor having an output at which a signal indicative of the level of current passing through the load line is present, the sensor being positioned with the housing, a binary input circuit configured to generate at least one binary signal, the binary input circuit being configured to change the level of the at least one binary signal without the need of opening the housing, and a controller circuit having a first input coupled to the output of the sensor for receiving the signal indicative of the level passing through the supply line and having a second input coupled to the binary input circuit for receiving the at least one binary signal, the controller being configured to provide a signal indicative of the status of the current in the load line on an output.

Abstract: A transformer comprising multiple secondary circuits operable to provide less than 250 VA of output per secondary circuit when an external over-current protection device is bypassed, and no more than about 100 VA of output when the external over-current protection device is not bypassed.

Abstract: A current sensor includes a housing having a face and sidewalls. A channel is formed in the housing to allow a conductor to pass therethrough. A clamp is also located upon the housing, including a jaw having a cable engagement surface. A pawl is positioned upon an edge of the jaw and is designed to engage notches on the face of the housing. The jaw may be rotated upon the face of the housing such that the cable engagement surface moves perpendicularly across the axis of the channel. When a cable is located in the channel, the jaw may be rotated clockwise and placed snugly against the cable. If the flange is moved away from the face, the pawl is released from the notches, and the jaw may rotate freely, thereby allowing the cable to be released from the clamp.

Abstract: An extruded rail-mount, for mounting devices to a variety of rails, with a support leg that provides upward support against the forceful pressure exerted when wires are screwed onto screw terminals at the edges of the mounted device. The mount is substantially constant longitudinally. The rail-mount has a thin, plank-like substrate with latitudinally upward arms and downward kinked legs and a downward support leg. The arms have catches to grab onto/support circuit boards or other devices. Kinked legs have catches to grab onto/mount a chosen rail. When the rail-mount is mounted on a rail, the support leg is of a length to support against the surface to which the rail is secured. Because rails are relatively narrow, the mount's utility is such that attachment to a rail provides support to one side of a mounted device and the support leg provides support for the opposite side of the device.