LERDN

LDY-30A

LDY-30A are applied to equipotential bonding of the low voltage side of transformer or main low voltage distribution boxes inside the building, providing protection against the overvoltage arising from the lightning strike to power supply system of class I or faulty operation,but they are not applied to the system of the expected short-circuit current beyond rated breaking afterflow current.

LDY-50A

LDY-50A are applied to equipotential bonding of the low voltage side of transformer or main low voltage distribution boxes inside the building, providing protection against the overvoltage arising from the lightning strike to power supply system of class I or faulty operation,but they are not applied to the system of the expected short-circuit current beyond rated breaking afterflow current.

LDY-75B | LDY-NPE/75B

LDY-75B series are applied to equipotential bonding of the main low voltage distribution boxes in the building, providing protection against the overvoltage arising from the lightning strike to the power supply system of class I or faulty operation (option from standard IEC61643-1 and GB50343)