Abstract: A surge suppression unit contains electrical surge suppression components configured to redirect power surges. A sensor monitors the surge suppression components for a possible impending explosion or fire condition. A disconnect mechanism is configured to disconnect power from the surge suppression components when the sensor detects the explosion or fire condition.

Abstract: A surge suppression device includes a bus bar that extends along a length of the surge suppression device. Multiple surge suppression modules each have an attachment device that attaches and detaches to the bus bar without disrupting connections of other surge suppression modules coupled to the same bus bar.

Abstract: A surge suppression unit comprises connection circuitry for coupling the surge suppression unit in a communication cable. Surge suppression circuitry uses Silicon Avalanche Diodes (SADs) that couple power surges on the communication cable to ground. In one embodiment, the surge suppression unit includes multiple surge suppression modules configured for inserting into different slots in a same enclosure.

Abstract: A surge suppressor includes a surge suppression device. A novel current limiting fuse design prevents current flow when the surge suppression device fails. A thermal fusing device is configured to prevent current flow when excessive heat is generated in the surge suppression device. A novel enclosure is used for containing the surge suppression device, over current fuse and thermal fuse. The foregoing and other objects, features and advantages of the invention will become more readily apparent from the following detailed description of a preferred embodiment of the invention which proceeds with reference to the accompanying drawings.

Abstract: A surge suppression system includes a surge suppression circuit having multiple surge suppression elements each capable of activating during a voltage transient or other power surge condition. A multi-level monitoring circuit surveys the percentage of operational surge suppression elements. The monitoring circuit generates a low priority signal when a small percentage of the surge suppression elements are disabled. The monitoring circuit generates a high priority signal when a second higher percentage of the surge suppressor elements are disabled. In another aspect of the invention, each fuse is formed as a trace on a printed circuit board.

Abstract: An electrically powered annunciating system, for use in electrical panel boxes, having a sensing circuit including a first acoustical transducer to transmit a sonic signal to an annunciating circuit baring a second acoustical transducer at a spaced distance from the first transducer to operate the annunciating circuit responsive to a sonic signal received from the first transducer. The sensing circuit powers the first acoustical transducer to produce a sonic signal responsive to a sensed electrical event such as termination of power to an electrical component. The annunciating circuit includes a tuned amplifier for signal purification and amplification, a time delay integrator to prevent accidental circuit operation caused by noise and an annunciator and a communication interface activated responsive to a sonic signal received by the second transducer.

Abstract: An electrically powered annunciating system, for use in electrical panel boxes, having a sensing circuit including a first acoustical transducer to transmit a sonic signal to an annunciating circuit having a second acoustical transducer at a spaced distance from the first transducer to operate the annunciating circuit responsive to a sonic signal received from the first transducer. The sensing circuit powers the first acoustical transducer to produce a sonic signal responsive to a sensed electrical event such as termination of power to an electrical component. The annunciating circuit includes a tuned amplifier for signal purification and amplification, a time delay integrator to prevent accidental circuit operation caused by noise and an annunciator and a communication interface activated responsive to a sonic signal received by the second transducer.