Patent ID: 8777676

Claim:
A contact block comprising: a casing having an axially facing front end, an axially facing rear end, first and second opposite sides and internal switching contacts; a first wiring compartment located at the first side of the casing and having an open front end and an open rear end; a first switch conductor extending laterally into and substantially dividing said first wiring compartment into front and rear wiring chambers; an axially extending first wiring terminal in one of said wiring chambers connected to said first switch conductor; and a first cover removably attached to said casing over said first wiring compartment, said first cover including at least one lateral wiring port axially offset from said first switch conductor and an axially facing access opening near said wiring port, said first cover and said casing having substantially biaxially symmetrical mating portions that enable reversible attachment of said first cover to said casing in either of two orientations so that the wiring chamber in which said first wiring terminal is located is accessible by a wire through said wiring port and said first wiring terminal is accessible by a tool through said access opening.