The Residual Current Circuit breaker RCCB is the Safest device to detect and Trip against Electrical Leakage current, thus Ensuring Protection against Electric shock Caused by indirect contact. Circuit breakers are automatically Operated Electrical Switches that Protect Electrical Circuits from Short-Circuiting or Overloading. It Protects against many major accidents. RCCB Circuit Breaker is an Electrical Wiring device whose function is to disconnect the current in the circuit.

ATS is a generator & grid power line connection. ATS works to automatically start the generator when the grid power line goes down. ATS works to automatically shut down the generator when the grid power line comes again. There are two types of automatic transfer switches, circuit breakers, and contactors. The Circuit Breaker type has two Interlocked Circuit Breakers, so only one breaker can be closed at any time. The Contactor type is a Simpler Design that is Electrically Operated and Mechanically held.

A Single-Phase Energy Meter is a sort of Watt-Hour meter. It consists of two Electromagnets. Single-Phase Energy Meter is also Popularly known as a watt-hour meter. One Magnet is called the shunt magnet Ml which is Mounted with a Pressure coil. The Pressure coil is a long coil Made of fine Copper wire which is connected across the Supply line. Single-phase energy meters are suitable for measuring single-phase AC current frequencies of 50/60 Hz, which are used for fixed indoor installations.