Electric control apparatus with an electromechanical latch device

An electric control apparatus, comprising:

• a control device and a latch device, said control device comprising a base;
• an insulated housing supported on the base;
• a control mechanism supported on the housing;
• the control mechanism comprising a first stationary and movable contact combination;
• the first stationary and movable contact combination being disposed to open and close an electric circuit;
• operating means disposed to operate the first contact combination between an open and closed position;
• a first biasing means disposed to bias the contact combination in a first operating position;
• said operating means comprising a first coil and armature combination whereby upon energization of the first coil, the first armature is disposed to move an insulating contact carrying structure;
• the contact carrying structure being disposed to move the contacts of the first contact combination to a second operating position against the first biasing means;
• said latch device comprising a latching means movable structure;
• the latching means movable structure comprising a second coil and armature combination;
• a latching member for latching the first armature and contact carrying structure in the second operating position;
• a second biasing means for biasing the latching member in the latched position;
• the second armature being disposed to move the latching member against the second biasing means to the unlatched position;
• a second stationary and movable contact combination being movable from an opened to a closed position;
• the second stationary and movable contact combination being electrically in series with the first coil and armature combination;
• and said latching member being disposed to move the second contact combination between the opened and closed position.