Many forms of structures and operations in which the on and off state of contact is observed through windows. There are operations inside and outside the board. There are frontal and lateral operations. There are connections behind the board.

Characteristics of products

1. The elastic-accumulating accelerating mechanism for instant release realizes the rapid making and breaking ,having no relationship with the speed of the operating handle, and increasing greatly the capability of extinguishing electric arc.

2. The shell made of unsaturated polyester resin reinforced by glass fibre possesses excellent performance of flame resistant, dielectric performance, safe operation, resist carbonic performance and resist impact performance.

3. Parallel double gap contact possesses self cleaning functions.

4. All the contact materials are copper alloy plated with silver, and possess two separation contact surfaces.

5. Large clearance of insulation.

6. Be on “0”, the products can lock the handle with three locks at the same time and thus can avoid error operation.