Manual return version of KA-122
Protectors are returned manually

Basic Characteristics

Product summary

Detects overcurrent / locked rotor current and protects a motor from burnout
Performs manual return by pushing the button

Product purpose

Prevent burnout of general-purpose motors

Intended use

Electric power tools, food shredders, and other electric appliances that must not be automatically returned

Operating type

Bimetal type
(Convert a current applied to the product into heat in the internal heater, which then operates the bimetal and interrupts the circuit)

Compatible standard


Mechanical Characteristics

Case material

Phenolic resin
(UL 94, HB, CTI 175 or higher)
* UL 94, V-0 also available

Operating temperature range

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

Connection terminal type

Terminal with holes
FASTON tab terminal (#187, #250)

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

Up to 1.5 kW

Contact withstand current


Contact withstand count

200 times or more

Withstand voltage

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

Insulation resistance

50 MΩ or higher with a 500-VDC megohmmeter

Characteristics Unique to This Product

  • Set operating temperature: 100°C to 140°C
  • Set return temperature: 0°C or less
  • Temperature tolerance: ±10°C