Thinner version of KA-122

Basic Characteristics

Product summary

Detects overcurrent / locked rotor current and protects a motor from burnout
Has a thin shape

Product purpose

Overcurrent protection

Intended use

Various DC motors
Tilting up of outboard motors, and more

Operating type

Cut off electrical contacts with disc-type bimetals

Compatible standard


Mechanical Characteristics

Mechanical Characteristics

Phenolic resin
(UL 94, V-0)

Operating temperature range

Temperature near motor: -20°C to 60°C
No freezing or condensation allowed

Connection terminal type

#187 tab terminal

Electrical Characteristics

Rated voltage


Rated capacity


Contact withstand current


Contact withstand count

1000 or more times
(at. DC 12 V 55 A)

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 return temperature: 60°C to 70°C
  • Temperature tolerance: ±10°C