FR series auxiliary switch
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FR series auxiliary switch

Rated Voltage:DC220V AC220V

Rated Current:10A

Conventional Thermal Current:15A

Breaking Capacity:DC220V/4A , T0.95 :6P=300ms ; AC220V/10A , Cosφ=0.4

Ambient Temperature:-40℃~+70℃

Withstand Voltage:2500V(50Hz) /1min

Life Cycle:20000 次



General Instruction

FR series auxiliary switch is one of the auxiliary components for the set of high-voltage equipments. With the exquisite outline and 6.5mm thickness of each section of switch (half of the normal auxiliary switch section), the FR series auxiliary switch saves installation space and is applicable both for the controlling of switch on & off functions, interlocking, signal circuits of the high-voltage-switch driving mechanism and for conversions or group switches, moreover it`s more suitable to be used for less internal space driving mechanisms like GIS.


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.

Meaning of the Symbol  


E.g.: model no. FR-20Y01 means FR series, 20 poles, screw connection mode, 
10 NO contacts and 10 NC contacts.

Technical Parameters

額定電流 Rated current


約定發熱電流 Conventional thermal current



Rated voltage

直流 DC

交流 AC




開斷容量 (>1°/ms

Breaking capacity(>1°/ms)

T0.95 6P=300ms





工頻耐壓 Withstand voltage

2500V(50Hz) /1min

機械壽命 Life cycle



Structure Features
FR series auxiliary switch is made up of multi-units with same structures. The contact point is pure silver alloy; the moving and stable contact are made of superior brass, and the insulation plate is made of superior inflaming retarding material with high strength, good insulation property and heat-resistance.  Moreover, the reasonable structure of the switch ensures excellent dust-proof effects.

Working Principles
FR series auxiliary switch adopts indirect driving structure, it is working by square shaft to drive the cam wheel rotated, which in turn to push rod of switch to cause the moving of the contacts, thus to realize the control of the switch on & off function of the electric circuits.


Installation and Operation
1.Please refer to switch draft for mounting dimension..
2.The auxiliary switch should be installed to the target objects by fixing the extended screw shaft at both sides of the end plates. The switch itself should not be subject to external force, otherwise, it will become deformed and not able to work normally;
3.The serial numbers of contacts could be customized, and the switch operation should be within effective angles(0°~90°).
4.The rotating handle should not be subject to axial force, otherwise it will cause switch breakdown thus affect its normal operation.
5.Lead wire for FR auxiliary switch should be adopted screw connecting method.

Ordering Information
1.Pls indicate product name, specification & model No., quantity; 
2.Pls make sure the dimension of switch, work route and breaking
of contacts etc.
3.Other requirements.


Construction Drawing

n=insulation plate quantity; L,L1 =customer's requirements