Device for rendering contactors electrically and mechanically inoperative

An interlocking device for rendering electrically and mechanically inoperative one or the other of two contactors each having an actuating member, said device of the type comprising:

• i- a flat case with first and second opposite parallel front walls, spaced a small distance apart and each having a central region and, first and second opposite sidewalls which extend in planes substantially perpendicular to the first and second front walls, said case having a fixed pin and being adapted for being mounted between the two contactors disposed side by side;
• ii- first and second movement take-offs adapted for respectively coupling with the actuating member of the respective contactors through substantially coaxial apertures provided in the central regions of the first and second front walls respectively, each of said first and second movement take-offs being movable between first and second positions corresponding respectively to the work position and the rest position of the contactor with which it is associated ;
• iii- first and second mobile elements providing reciprocal inoperativeness, driven respectively by said first and second movement take-offs, said mobile elements having a travel distance such that when the first movement take-off is in its first position, the first mobile element prevents movement of the second movement take-off to its first position and conversely,
• iv- first and second switch devices respectively comprising first and second pairs of fixed contacts, connected respectively by first and second conductor means to first and second input connection elements and to first and second output connection elements, and first and second mobile contact elements respectively actuated by said second and first mobile elements,
• said first and second input connection elements being mounted on said first sidewall of the case whereas said first and second output connection elements are mounted on the second sidewall, and said first and second switch devices form with the input and output connection elements which are associated therewith as well as with the corresponding conductor means, first and second through current lines, which do not cross inside the case and are directed transversely with respect to said sidewalls.