Switching device
First Claim
Patent Images
1. A switching device, comprising:
- a main electromagnetic drive;
fixed contact elements;
a moving contact piece;
a moving contact carrier;
a contact pressure spring, the moving contact piece being held in a window of the moving contact carrier via the contact pressure spring, the contact pressure spring pressing the moving contact piece onto the fixed contact elements when the main electromagnetic drive is in an "on" state;
an auxiliary electromagnetic drive including a coil winding, the coil winding being coupled in series to one of the fixed contact elements; and
a lever mounted in the moving contact carrier, the lever operatively coupled to the auxiliary electromagnetic drive and transmitting a force from the auxiliary electromagnetic drive onto the moving contact piece to provide an additional pressure of the moving contact piece on the fixed contact elements in the event of an overload current flowing via the moving contact piece.
1 Assignment
0 Petitions
Accused Products
Abstract
The invention relates to a switching device having a main electromagnetic drive for connecting and disconnecting a moving contact piece to fixed contact elements, and having an auxiliary electromagnetic drive which, in the event of an overload current flowing via the moving contact piece, in the ON state exerts an additional contact pressure of the contact piece on the fixed contact elements. A lever mounted in the moving contact carrier is also is provided to transmit the additional contact pressure.
24 Citations
4 Claims
-
1. A switching device, comprising:
-
a main electromagnetic drive; fixed contact elements; a moving contact piece; a moving contact carrier; a contact pressure spring, the moving contact piece being held in a window of the moving contact carrier via the contact pressure spring, the contact pressure spring pressing the moving contact piece onto the fixed contact elements when the main electromagnetic drive is in an "on" state; an auxiliary electromagnetic drive including a coil winding, the coil winding being coupled in series to one of the fixed contact elements; and a lever mounted in the moving contact carrier, the lever operatively coupled to the auxiliary electromagnetic drive and transmitting a force from the auxiliary electromagnetic drive onto the moving contact piece to provide an additional pressure of the moving contact piece on the fixed contact elements in the event of an overload current flowing via the moving contact piece. - View Dependent Claims (2, 3, 4)
-
Specification