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KW Iron Shell Thermal Protector
KW Series Iron Shell Thermal Protector

KW Iron Shell Thermal Protector

KW***℃*T, the temperature protector with metal shell, is a patented product developed by our company
Motor thermal protector/thermal circuit breaker
No flicker, precise working temperature
Small thermal protector with metal shell
Realize stable, reliable and long service life with non-current-carrying device design
Product Detail

Product Overview



  • KW***℃*T, the temperature protector with metal shell, is a patented product developed by our company

  • Motor thermal protector/thermal circuit breaker

  • No flicker, precise working temperature

  • Small thermal protector with metal shell

  • Realize stable, reliable and long service life with non-current-carrying device design


Scope Of Application

KW is designed for all kinds of motors below 1.5 horsepower, fan motors, washing machines and other small home appliances, transformers, ballasts, battery packs, glue machines, solenoids, electric heating appliances, etc. It can be used as a self-resetting thermal circuit breaker (2B type), motor thermal protector (3C type) and ballast thermal protector.

Number Naming Reference

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Design Principle

KW has a simple structure design, consisting of strip-shaped high-sensitivity bimetallic elements, moving contacts, static contacts, temperature-resistant wires, etc. The bimetal element is fixed on the bottom plate, in a fixed state, the moving contact and the static contact piece are closed, and the circuit is conducted. When the electrical appliance heats up for some reason, and the temperature rises to the rated operating temperature of the product, the bimetallic element is heated to produce internal stress and act quickly. The moving contact is pushed to disconnect the contact, cut off the power supply, and the electrical appliance stops working. To overheat protection. When the temperature of the protected electrical appliance drops to the product's rated reset temperature value, the bimetallic element returns to its original state and the movable contact is closed, and the electrical appliance resumes operation. The protection function of the product can be divided into two types: normally open type and normally closed type, that is, when the temperature reaches the design value, the circuit is turned on and the circuit is turned off.


KW can be directly connected to the windings, and can also be installed outside the resin-sealed motor by clamping or inserting. It can directly cut off the circuit. Since the trip time of cutting off the power supply depends on the working temperature of the KW thermal protector, the temperature class should be selected correctly, and the model that matches the motor can be selected by referring to the performance curve.


Due to the use of a metal shell, the KW protector has stronger mechanical strength and can be covered with an insulating sheath to insulate the metal parts of the motor.

Safety Certification


CQC: 10002045189 (GB14536.1-2008 standard; GB14536.3-2008 standard) motor thermal protector

16002154156 (GB14536.1-2008 standard; GB14536.3-2008 standard) motor thermal protector

20002239040 (GB14536.1-2008 standard; GB14536.10-2008 standard) temperature sensitive controller

20002239041 (GB14536.1-2008 standard; GB14536.3-2008 standard) motor thermal protector

TUV: 50366282 (EN60730-1 standard; EN60730-2-9 standard, iron case life of 10,000 times)

VDE: 40030067 (EN60730-1 standard; EN60730-2-2 standard)

KC: ZU02045-17003 (K60730-1 standard; K60730-2-9 standard)

CB: CN35137-M1 (IEC60730-2-2 standard)

DE2-021471 (IEC60730-2-9 standard)


Patent No

KW type: ZL200620126343.3

KW-E type: ZL200630089003.3

Contact Rating


MODEL

Voltage

60V-DC

120V-AC

250V-AC

380V-AC

KW-1T/E

Current

6A/10A

6A/10A

6A/10A

/

KW-2T

Current

15A/25A

15A/25A

15A/25A

/

KW-2T04

Current

/

/

/

3A

KW-2T05

Current

/

/

/

5A

KW-3T02

Current

5A

5A

5A

/

KW-E03

Current

6A

6A

6A

/

KW-1T03

Current

6A

6A

6A

/

KW-F

Current

2A

2A

2A

/

KW-G

Current

2A

2A

2A

/

KW-P

Current

10A/16A

10A/16A

10A/16A

/

Temperature Specification


Operating Temperature

Reset Temperature

Operating Temperature

Reset Temperature

40±5℃

≥27℃

105±5℃

70±15℃

45±5℃

≥30℃

110±5℃

70±15℃

50±5℃

≥30℃

115±5℃

75±15℃

55±5℃

≥30℃

120±5℃

80±15℃

60±5℃

≥35℃

125±5℃

85±15℃

65±5℃

40±15℃

130±5℃

90±15℃

70±5℃

45±15℃

135±5℃

95±15℃

75±5℃

50±15℃

140±5℃

100±15℃

80±5℃

55±15℃

145±5℃

105±15℃

85±5℃

60±15℃

150±5℃

110±15℃

90±5℃

65±15℃

155±5℃

115±15℃

95±5℃

65±15℃

160±5℃

120±15℃

100±5℃

65±15℃

Special specifications according to customer requirements


Reset temperature: 2/3 of the nominal operating temperature, with a tolerance of ±15°C, or made according to customer requirements.

Product Dimensions


Model

Metal outer case

L(mm)

W(mm)

H(mm)

KW-1T

20.5(mm)

7.4(mm)

3.6(mm)

KW-1T03

19.6(mm)

7.3(mm)

3.6(mm)

KW-(2T)

01

21(mm)

8(mm)

4(mm)

03

22.5(mm)

12(mm)

4.8(mm)

04

20(mm)

9(mm)

4(mm)

05

22.5(mm)

12(mm)

4.8(mm)

KW-3T

16(mm)

6.4(mm)

3.1(mm)

KW-(3THWJK)

16(mm)

7.3(mm)

3.8(mm)

KW-E

20.5(mm)

7.4(mm)

3.6(mm)

KW-F

17.5(mm)

5.2(mm)

4(mm)

KW-P

26.5(mm)

13(mm)

9.5(mm)

Characteristic Curve

Approximate value is only used to select samples for certification test

电机热保护器系列-产品说明书_13_06.jpg

These curves are only used to provide guidance when choosing a protector for a specific application. Other factors should be considered when choosing a protector, such as the distance from the heat source and the installation method. The trip time depends on the terminal configuration and installation conditions.


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