Modular terminal block assembly

Claim 1

A CONNECTOR MODULE FOR USE WITH A MOUNTING MEMBER HAVING A NONCIRCULAR APERTURE THEREIN, SAID CONNECTOR MODULE COMPRISING A BLOCK OF INSULATING MATERIAL HAVING OPPOSITE END FACES PROVIDED WITH COMPLEMENTARY MATABLE ALIGNED PROJECTIONS AND DEPRESSIONS, SAID BLOCK COMPRISING AN UPPER SECTION OF GREATER AREA THAN SAID MOUNTING MEMBER APERTURE AND A LOWER SECTION INSERTIBLE THROUGH SAID APERTURE AND FORMING A DOWNWARDLY-FACING SHOULDER WITH SAID UPPER SECTION, AT LEAST A PORTION OF SAID LOWER SECTION BEING OF NONCIRCULAR CROSS-SECTION AND BEING LOCATED WITHIN THE NONCIRCULAR APERTURE OF SAID MOUNTING MEMBER WHEN THE LOWER SECTION IS INSERTED THROUGH SAID APERTURE UNTIL SAID SHOULDER IS SEATED ON SAID MOUNTING MEMBER, THEREBY TO RESTRAIN ROTATION OF SAID MODULE RELATIVE TO THE MOUNTING MEMBER, THE REMAINDER OF SAID LOWER SECTION PROJECTING A SUBSTANTIAL DISTANCE BELOW SAID MOUNTING MEMBER, AN ELECTRICAL TERMINAL LOCATED ON THE TOP SURFACE OF SAID UPPER SECTION, AND A SPRING CLIP ENGAGING THE DOWNWARDLY-PROJECTING PORTION OF SAID LOWER SECTION AND BEARING ON THE UNDERFACE OF SAID MOUNTING MEMBER.