In DC traction system impermissible touchvoltage may occur between the return circuit and the structure earth due tooperational and short-circuit currents. In this case, a short-circuit devicemust be used as a voltage protection device between the return circuit and thestructure earth, preventing the existence of impermissible touch voltage.

Features

1. Adopt high-performance DC contactor (ora hybrid switch consisting of thyristor and DC contactor parallel connected).It can meet the European standard and safety requirement.

2. Low maintenance due to application ofthyristors.

3. Maximum personnel and equipmentprotection due to fast reaction time.

4. Simple installation, compact design. 


5. No commissioning needed before using.