Two-section protection module for connecting blocks

A protection module for connecting blocks, notably of telephone systems, intended for at least one line wire, said device comprising a case made at least in part of insulating material and having first and second ends, a pair of first and second conducting terminals for each line wire and a ground conducting terminal at said first end of said case in position to be plugged in in the same direction and to cooperate with corresponding terminals of the connecting block, said first and second conducting terminals having conducting extensions extending toward said second end of said case and having resilient end portions biased toward one another, a protection device for each line wire disposed in said case and having at one end a first terminal electrically connected with said ground terminal and, at an opposite end, a second terminal gripped resiliently between said resilient end portions of said first and second conducting terminals in direct contact therewith, said case having in said second end an orifice opening to said second terminal of said protection device and said resilient end portions of said conducting terminals, and a detachable element of a size and shape for insertion through said orifice to an inner position for cooperation with said second terminal of said protection device and said resilient end portions of said conducting terminals, said detachable element being detachable from said module by withdrawing it from said orifice and replaceable by a different detachable element.