General Instruction
FC series auxiliary switch is one of the auxiliary components for the set of highvoltage
equipments. It adopts the cam composition and magnetic quenching
method, and with multitudinous contacts--the feature of cam switch. Meanwhile,
it has the function of increasing the contact quantity by adding the accessories
to meet customer`s needs.
The contact section of FC series auxiliary switch adopts the advanced
permanent magnet magnetic quenching technic to restrain the electric arc in
breaking off the circuit, which enhances the breaking capacity of the contacts
and solve the industry problem that is auxiliary switch is quite hard to break off
in DC circuit. The permanent magnet which generates high magnetic field
intensity guarantees the stability and perdurability of the magnetic field.
Besides, FC series auxiliary switch is also applicable both for controlling switch
on & off functions, interlocking, signal circuits of high-voltage-switch driving
mechanism and for conversions or group switches.

Service Condition
1.Ambient temperature:-40℃～+70℃.
2.Altitude:the installation spot is supposed not to exceed 5000m.
3.Humidity:the average value of relative humidity is max 95%, the average
value of vapor pressure is max 2.2kPa in condition within 24 hours.the monthly
average value of relative humidity is max 90%, the monthly average value of
vapor pressure is max 1.8kPa.
4.Vibration acceleration is max 15m/s².
5.There should be no evident air pollutions from dust, smoke, corrosives and
combustible gas, vapor or salty fog.