ACB

Air Circut Breaker

DOLS

Direct On Line Starter

FI

Frequency Inverter

MC

Magnetic Contactor

MCB

Miniature Circuit Breaker

MCCB

Molded Case Circuit Breaker

PTDR

Pneumatic Time Delay Relay

RCCB

Residual Current Circuit Breaker

TOR

Thermal Overload Relay