Abstract: A single pole power connector system includes a plurality of single pole connectors for carrying electric current in a multi-phase power applications. A single pole connector can be provided for each phase or line of the application. The single pole connectors can include mating male plugs and female receptacles. To releasably couple the male plugs and female receptacles of each single pole connector together, the plugs and receptacles can include between them a coupling feature. To prevent or avoid misconnections between male plugs and female receptacles of different single pole connectors, the plugs and receptacles can also include between themselves a polarization feature. The polarization feature can be angularly offset with respect to the coupling feature so that the plugs and receptacles can only couple with their intended pair.

Abstract: An electrical connector set having mating male and female connectors is provided with a first lock preventing separation, the first lock consisting of standard bayonet slot on one member and a mating key on the other member and a secondary locking mechanism consisting of a rotatable spring lock ring affixedly carried by one of the members and is positioned interior a rotatable and axially movable collar carried by the associated member. The spring ring has at least one radially urged spring finger and the collar has at least one opening dimensioned to receive the spring finger. The spring ring includes an increased thickness area in an axial dimension which is engaged against an undersurface configuration of the collar so that as the collar is rotated with respect to the spring ring it will undergo axial movement.