Thermostat with the same shape as the thermal protector 122 series

Basic Characteristics

Product summary

Detects excessive increases in temperatures
Same mounting dimensions as the 122 series

Product purpose

Prevent motor burnout

Intended use

Prevent burnout of inverter-controlled compressors
Detect gas leakage of constant-speed compressors

Operating type

Disk-type bimetal snap action

Compatible standard

VDE, CQC (TH-126 only)

Mechanical Characteristics

Case material

Unsaturated polyester resin
(UL 94, V-0)

Operating temperature range

Temperature near motor: 20°C to 100°C
No freezing or condensation allowed

Connection terminal type

#187 tab terminal

Product mounting method

Place the product into a Φ25 hole and press it down on an item you want to protect

Electrical Characteristics

Rated voltage

AC 125/250V

Rated capacity


Contact withstand current

AC 20A/10A

Contact withstand count

600 times or more

Withstand voltage

1500 V for 1 minute
Leakage current: 10 mA or less

Insulation resistance

100 MΩ or higher with a 500-VDC megohmmeter

Characteristics Unique to This Product

  • Set operating temperature: 90 to 130°C
  • Set return temperature: 60°C to 80°C
  • Temperature tolerance: ±5°C