The series circuit breaker has a protective
function against short circuits and overloads. And
are used in lighting distribution systems in
industry, commerce, and dwelling. And protect
fractional electric motors. They also have many
merits of high breaking capacity, good reliability
of sensitive action, convenient multi-pole
assorting, long use life, etc. They are mainly
adapted to the circuit of AC 50/60Hz,230V in single
pole, 400v in double, three, and four poles for
protecting overload and short circuits. Meanwhile,
they are also used in turning on or off the
electric apparatus and lighting circuit under
normal conditions. lt conforms to lEC60898.