Abstract: An overvoltage protection device (40) and a method for increasing the overvoltage current the device can carry. The overvoltage protection device (40) includes a Silicon Controlled Rectifier (SCR) (11) and an SCR enhance circuit (42). The SCR enhance circuit (42) provides the SCR (11) with an additional low resistance path to increase the amount of overvoltage shunt current the SCR (11) carries during an overvoltage event.

Abstract: A wire-insertion and/or cutting tool comprises a handle having an axial bore, in which a wire-insertion and cutting blade assembly holder is installed. A wire-insertion and/or cutting blade assembly is inserted into the holder in a selected one of a plurality of blade assembly insertion orientations. The blade assembly includes a wire-insertion and/or cutting blade, that is configured to engage a wire to be inserted into a terminal block, and is operative to either seat, or to both seat and cut the wire in accordance with the selected blade assembly configuration and its insertion orientation. The blade assembly may include a rotatable cutting blade, and the holder configured to rotate the cutting blade and cut a wire engaged thereby for a first insertion orientation of the blade relative to the holder, but to prevent the cutting blade from rotating for a second insertion orientation of the blade assembly relative to the holder.