AC (Alternating Current)
ADS (Automatic Disconnection of Supply)
CTL (Circuit Total Limitation)
DC (Direct Current)
ELCB (Earth Leakage Circuit Breaker)
FOCS (Fiber Optic Current Sensor)
GDT (Gas Discharge Tube)
GFI (Ground Fault Interupter)
GFCI (Ground Fault Circuit Interrupter)
GND (Ground)
MCB (Miniature Circuit Breaker)
MCC (Motor Control Center)
MMCB (Molded Case Circuit Breaker)
PDC (Power Distribution Center)
PEN (Protective Earth and Neutral)
RCBO (Residual Current Breaker with Over-Current protection)
RCD (Residual-current device)
TVS (transient-voltage-suppression)
UL (Underwriters Laboratory)