Connecting terminal assembly

A connecting terminal assembly for printed circuit boards comprised of individual single pole clamping modules, each module comprising:

• an insulating molded plastic housing (10) formed with a holding space that is sealed off on one side of the housing by a side cover wherein said side cover has pins (12) thereon that engage corresponding holes (14) on the one side of said housing to form said clamping module wherein said module has an access opening (42) at an upper end and step-shaped upper and lower latching recesses (56) in said access opening;
• said holding space containing a “U” shaped connection contact (18), a clamping spring (26), and an actuating element (40) wherein one side-piece (28) of said connection contact forms a contact bridge (20) and another free elastic side-piece (32) forms a soldering pin (22) extending below said housing;
• said actuating element (40) formed with a locking edge (52) positioned within said access opening (42) and operable between an upper position engaging said locking edge (52) with said upper latching recess (56) and a lower position engaging said locking edge (52) with said lower latching recess (56);
• said clamping spring (26) resting on said contact bridge (20) and biased to maintain said actuating element (40) in said upper position and wherein said clamping spring (26) having a clamping end (34) and an opening (36) for insertion and holding a wire conductor;
• said actuating element (40) being pushed into said lower position wherein said locking edge (52) engages said lower latching recess (56) and holding said clamping end (34) downwardly toward said soldering pin (22) so that to form an open position for inserting said wire conductor therein;
• and
• said actuating element (40) being tilted thereby releasing said locking edge (52) from said lower latching recess (56) to said upper latching recess so that to clamp said wire conductor between said clamping end (34) and said contact bridge (20).