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Genuine Seki Bimetal Thermostat Temperature Control Switch Overload Protector St-22

Short Description:

ST-22 Thermal Protector

Thermal protector belongs to a kind of temperature control device. When the temperature in the line is too high, the thermal protector will be triggered to disconnect the circuit, so as to avoid equipment burnout or even electrical accidents; when the temperature drops to the normal range, The circuit is closed and the normal working state is restored.

Function: thermal protection

MOQ: 1000pcs

Supply Capacity: 300,000pcs/month

Product Detail

Product Tags


Product Name Genuine Seki Bimetal Thermostat Temperature
Control Switch Overload Protector St-22
Use Temperature control/Overheat protection
Reset type Automatic
Electrical Rating 22A / 125VAC, 8A / 250VAC
Standard Operating Temperature Range 60°C to 160°C in increments of 5K
Operating Time Continuous
Tolerance +/-5°C for open action(Optional +/-3 C or less)
Protection class IP00
Contact material Silver
Dielectric Strength AC 1500V for 1 minute or AC 1800V for 1 second
Insulation Resistance More than 100MΩ at DC 500V by Mega Ohm tester
Resistance Between Terminals Less than 100m Ohm
Approvals UL/ TUV/ VDE/ CQC
Terminal type Customized


Typical Applications:

-Electric Motors, Battery Chargers, Transformers
-Power Supplies, Heating Pads, Fluorescent Ballasts
-OA-Machines, Solenoids, LED Lighting, etc.
-AC motors for home appliances, pumps, HID ballasts



Provide thermal protection from -20°C to 180°C.
With moisture resistance and customisable lead-wires.
Patented double-coating technology to prevent varnish penetration.
small, compact designs.
Joint venture with Korea Hanbecthistem/Seki
Snap action,Automatic reset.
Wire Customization Upon Request.


SEKI ST-22 Bimetal Thermal Protector
The SEKI ST-22 series thermal cut-out is their most popular device. Manufactured in high volume, this highly reliable overheat thermal protector has become an industry standard for motors & transformers
-Snap-Action Bimetal, Automatic Reset
-Temperature Setting Range: 50℃ to 150℃
-PBT Resin Case – Epoxy Sealed


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