KA/NA-122

Product nameKA/NA-122

Prevents burnout of a single-phase motor

Basic Characteristics

Product summary

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

Product purpose

Prevent compressor motor burnout

Intended use

Compressor (for refrigerators, air conditioners, and other appliances)

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

UL、VDE、CQC

Mechanical Characteristics

Case material

Phenolic resin
Tracking resistance: Level 3

Operating temperature range

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

Connection terminal type

Solder terminal
FASTON tab terminal (#187, #250)

Product mounting method

Place the product into a Φ25 hole and bring it into intimate contact with the motor

Electrical Characteristics

Rated voltage

AC 125/250V

Rated capacity

Up to 1.5 kW

Contact withstand current

60/40A

Contact withstand count

10,000 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: 100°C to 160°C
  • Set return temperature: 60°C to 70°C
  • Temperature tolerance: ±10°C
  • NA failsafe (with safety mechanism)
KA/NA-172

Product nameKA/NA-172

Prevents burnout of a single-phase motor
Higher tracking resistance than the 122 type

Basic Characteristics

Product summary

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

Product purpose

Prevent compressor motor burnout

Intended use

Compressor (for refrigerators, air conditioners, and other appliances)

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

UL、VDE、CQC

Mechanical Characteristics

Case material

Unsaturated polyester
Tracking resistance: Level 0

Operating temperature range

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

Connection terminal type

FASTON tab terminal (#250)

Product mounting method

Place the product into a Φ25 hole and bring it into intimate contact with the motor

Electrical Characteristics

Rated voltage

AC 125/250V

Rated capacity

Up to 1.5 kW

Contact withstand current

60/40A

Contact withstand count

10,000 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: 100°C to 160°C
  • Set return temperature: 60°C to 70°C
  • Temperature tolerance: ±10°C
  • NA failsafe (with safety mechanism)
KA-123

Product nameKA-123

Prevents burnout of a single-phase motor

Basic Characteristics

Product summary

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

Product purpose

Prevent compressor motor burnout

Intended use

Compressor (for refrigerators, air conditioners, and other appliances)

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

UL

Mechanical Characteristics

Case material

Phenolic resin
(UL 94, V-0, CTI 175 or higher)

Operating temperature range

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

Connection terminal type

Solder terminal
FASTON tab terminal (#250)

Product mounting method

Place the product into a Φ30 hole and bring it into intimate contact with the motor

電気特性

Electrical Characteristics

AC 125/250V

Rated capacity

Up to 2.2 kW

Contact withstand current

80/50A

Contact withstand count

3,000 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: 100°C to 160°C
  • Set return temperature: 60°C to 70°C
  • Temperature tolerance: ±10°C
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KA/NA-125

Product nameKA/NA-125

Prevents burnout of a single-phase motor and is equipped with an independent temperature detection device

Basic Characteristics

Product summary

In addition to the features of the 122 model, this product has an independent temperature protection feature.

Product purpose

Prevent compressor motor burnout

Intended use

Compressor (for refrigerators, air conditioners, and other appliances)

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

UL、VDE

Mechanical Characteristics

Mechanical Characteristics

Phenolic resin (unsaturated polyester)
(UL 94, V-0, CTI 175 or higher)
* CTI600 or higher also available

Operating temperature range

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

Connection terminal type

Solder terminal
FASTON tab terminal (#250)

Product mounting method

Same as KA-122

Electrical Characteristics

Rated voltage

AC 125/250V

Rated capacity

Up to 1.5 kW

Contact withstand current

60/40A

Contact withstand count

5,000 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

  • Thermal part set operating temperature: 140°C to 160°C.
  • Thermal setting return temperature: 60°C to 70°C.
  • Temperature setpoint operating temperature: 120°C to 130°C
  • Temperature setpoint return temperature: 70°C to 80°C
  • Temperature tolerance: ±10°C
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