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S100 series snap-action switch

Rated Voltage:DC24V AC220V

Rated Current:2A

Conventional Thermal Current:

Breaking Capacity:DC24V/2A , T=20ms ; AC220V/1.5A , Cosφ=0.4

Ambient Temperature:-40℃~+70℃

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

Life Cycle:1000000 次



General Instruction

S100 series snap-action switch is a kind of limit switch with elastic flip capability. One of its features is the switching speed is independent of the actuation speed, which makes it excellently suitable for low actuation speed limit switch and mechanical status testing, etc.
S100 series snap-action switch is provided with a positive switch off mechanism. Even when short circuit, the welded contact pieces still can be switched off compulsively by external force, thus the snap action switch can build safety circuits.
S100 series snap-action with self cleaning contacts can protect against dust, humidity and pollution agents to maintain high reliability and sensitivity even at small contact load. Thus S100 series snap-action switch is suitable for automatic operation, interlocking in low voltage and current, etc.
Stable contact of the S100 series snap-action switch is made of silver with copper plating, moving contact is made of elastic phosphor copper with silver alloy contact point, it`s advanced in small dimensions, controlling reliability and high capability of current flow, etc.

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. S100U means S100 series, the structure is simulated roller lever.

Technical Parameters

額定電流 Rated current


額定電壓 Rated voltage

直流 DC

交流 AC



開斷容量 Breaking capacity





工頻耐壓 Withstand voltage

2500V(50Hz) /1min

防護等級 Protection class


最大操作力 Max operation force

2.25N max

機械壽命 Life cycle


S100U Route Parameters


Installation and Operation
Please refer to switch draft of dimension.
Keep the switch element fastened at points and the max torque of the fixing screws is 0.7Nm. All the dimensions of switching element must be subject to the mounting plate, and the interstice should be within the allowed max value. Please use insulating plates when mounting on uninsulated surfaces as safeguard. The safeguard insulating plate must be flame retardant and in high compressive strength.
Terminal wire: Plug 6.3x0.8mm, Contact point: silver (AgNi15)

Ordering Information
Please specify below information when ordering: 
name of product, model, quantity and other special requirements.


Construction Drawing

n=insulation plate quantity;L,L1, L2=customer's requirements