Lighting Bus Tunking System : Schneider, C&S, Siemens, Legrand, Eaton, Alfaduct, Mandexi(Max), Godrej, Naxso, EAE Sandwich Bus Trunking System. Lighting Bus Tunking System :- Copper Range: 25A, 32A, 40A & 63A # Insulation : Class A # Enclosure : Aluminum #Impulse Withstand Voltage : 2.5KV #Degree Of Protection: IP55/IP54 # Operational Voltage 500 V AC # Frequency : 50HZ/ 60HZ. Electric # Saudi Arabia # Bangladesh # Mexico # Djibouti # Dubai # Electricals # Electric # Bangladesh # China.