It is an instantaneous tripping circuit breaker which does not have overcurrent tripping characteristic for standard circuit breaker and only protects agains... More Details >>
AC Breakers used at DC circuit
It is not possible to use a circuit breaker for AC in DC circuit. Since the Arc-Extinguishing Device structure of circuit breaker for DC is different from th... More Details >>
AL (Alarm switch) is a switch which electrically displays tripping state of a circuit breaker.The markings of the switch are 8/ALa, 96/ALb and 95/ALc.*When t... More Details >>
Type name of the operating handle
F-2SV is standard, F-2SVE is for emergency use. The difference is the color of the handle and its surroundings parts. More Details >>
Only ACB fixed type is available for DC circuits. More Details >>
Setting change operation while power ...
It is forbidden to change the characteristic when the breaker ON. Over current trip and earth leakage trip characteristics should be changed by a person with... More Details >>
MCB can be used at 85% or less relative humidity and no condensation. More Details >>
Bar terminal material for 400A is aluminum alloy, and for 630A or higher is copper. More Details >>
(1) and (2) are impossible. More Details >>
About Low-voltage Power Distribution ...
Main circuit of US-H* type is used for only AC power supply. For DC powersupply, we provide US-KD8 type solid state contactor. More Details >>