Histor
Electrical
- Mar 2, 2022
- 70
Hi, I have a 230V Power DB which is feeding the 230V control supply to PLC panel. The outgoing power circuits of this Power DB is equiped with MCB (6A) and RCCB (300mA). Today I noticed that the MCB tripped in the circuit which feeding to PLC control supply mentioned above. Please clarify why RCCB not done anything?