RCD = Residule Current Device
A residual-current device (RCD), or residual-current circuit breaker (RCCB) is an electrical wiring device that disconnects a circuit whenever it detects that the electric current is not balanced between the energized conductor and the return neutral conductor. Such an . RCCBs are designed to disconnect quickly enough to prevent injury caused by such shocks. Timbalance may indicate current leakage through the body of a person who is grounded and accidentally touching the energized part of the circuit. A lethal shock can result from these conditionshey are not intended to provide protection against overcurrent (overload) or all short-circuit conditions.
In the United Kingdom, a residual-current device is referred to as an RCD or an RCBO when including over-current protection. Non residual-current circuit protection devices are called Circuit Breakers or MCBs. Infrequently they can be called Trips or Trip Switches.
“Tengen” Brand Residule Current Device made in China
RCD model is TGM1L-800/4300A, rated current is 630A, applied on prime power 260kw Cummins diesel generator set
RCD model is TGM1L-225L/4300A, rated current is 125A, applied on prime power 50kw Cummins diesel generator set