Remotely controllable circuit breaker

A remotely controllable circuit breaker comprising in combination:

• a single set of first and second contacts;
• a manually operable switching mechanism for opening and closing the contacts, said manual switching mechanism including a manual handle movable between an ON position and OFF position and including a movable arm carrying the first contact which arm is operatively connected to the manual handle to be actuated thereby between an ON condition and an OFF condition for bringing the first contact into and out of contacting engagement with the second contact;
• a trip mechanism operatively connected to the manually operable switching mechanism so as to open the contacts upon the occurrence of predetermined fault current conditions flowing through the breaker;
• a remotely controllable switching mechanism for forcibly opening and closing the contacts in response to a remote control signal;
• said second contact being movable between an operative position where it is in electrical contacting engagement with the first contact of the movable arm in the ON condition and an inoperative position where it is away from the first contact independently of the conditions of the movable contact arm;
• and
• said second contact being operatively connected to said remotely controllable switching mechanism in such a way as to be moved between the operative and the inoperative positions by the latter receiving the remote control signal.