Abstract: A jaw for a fifth wheel hitch assembly includes a jaw body having a stepped bearing surface. A jaw assembly for a fifth wheel hitch assembly includes a jaw body, a control handle and a connecting link where the connecting link is pivotally connected to the control handle on the jaw body. A fifth wheel hitch assembly includes a base assembly for mounting to a towing vehicle, a head assembly carried on the base assembly and a jaw assembly carried on the head assembly. That jaw assembly includes a jaw body having a stepped bearing surface for engaging a king pin of a trailer.

Abstract: A circuit and device protects connected equipment from a broad range of unsafe conditions of over-voltage and under-voltage by disconnecting the line voltage before surge protection components, generally MOVs, are damaged from sustained surges. However, nuisance tripping of the protective circuit is avoiding by discriminating surges that are properly handled by the MOVs and components in the load or protective device. Further, the devise are protected from sustained high voltage line conditions, which would ordinarily result in repeated cycling between the on and off states as the line voltages fluctuates slightly at or about the trip threshold, as the circuit has a deliberate hysteresis such that the turn on voltage is about 10 to 20 V lower than the shut off threshold.