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HUIZHOU HENGDAFENG ELECTRONIC SCI&TECH CO.,LTD.

Contact Person: Mr. Jacky

Mobile:+86-135 38379716

Tel:+86-752-2033152

Fax:+86-752-2033153

Web:www.HDF-elec.com

E-mail: Jackychao1984@gmail.com

Address: Zhonggang Village Shiwan Town Huizhou City China


 

Location:Home > Products > Thermal Switch Thermal Switch

Structure of Thermo Protector:

 

1. Lead

2. Epoxy

3. Case

4. Passive Contact Plate

5. Active Contact point

6. Bimetal

7. Active Contact Plate

8. Base Holder

 

 

Principle of Thermo Protector:
BW serial universal and enhanced protectors with large metal casing are composed of the thermal conductive metal casing, bimetallic parts welded with silver alloy contact point, conductive bracket, insulation fixation stand, fixed contact strip and heat resistance cable. In case of abnormal operation, along with the increase of the environment temperature to the set value, the bimetallic parts perform quick action, open the contact point, and disconnect the circuit. When the device is cooled to the temperature for safe operation, the contact point will automatically closes and recover normal operation.

 

Normally Closed condition

 

Normally Open Condition

 

Overall Dimensions:

Model Type

Case Material

BW9700

Metal

Plastic

 

Type

L

B

H

BW9700(Material Case)

20mm

7.4mm

3.8mm

BW9700(Plastic Case)

20mm

8mm

4mm

BW9700(Material Case)

15mm

6.7mm

3.2mm

BW9700(Plastic Case)

15mm

7.2mm

3.8mm

 

General Temperature Specification:

Action Temperature

Reset temperature

Action Temperature

Reset temperature

45±5℃

≥27℃

110±5℃

73±15℃

50±5℃

≥30℃

115±5℃

76±15℃

55±5℃

≥30℃

120±5℃

80±15℃

60±5℃

40±15℃

125±5℃

83±15℃

65±5℃

43±15℃

130±5℃

86±15℃

70±5℃

46±15℃

135±5℃

90±15℃

75±5℃

50±15℃

140±5℃

93±15℃

80±5℃

53±15℃

145±5℃

96±15℃

85±5℃

56±15℃

150±5℃

100±15℃

90±5℃

60±15℃

155±5℃

103±15℃

95±5℃

63±15℃

160±5℃

106±15℃

100±5℃

67±15℃

165±5℃

110±15℃

105±5℃

70±15℃

170±5℃

113±15℃

Note: The recovery temperature is 2/3 of the standard action temperature with the tolerance of ±15℃ or specified by customer.

 

Passed Certificate:
CQC TUV UL VDE

Copyright 2013.All Rights Reserved GD ICP 14072646 Number

Copyright HUIZHOU HENGDAFENG ELECTRONIC SCI&TECH CO.,LTD.

Address: Zhonggang Village Boluo Town Huizhou City China Phone:

Fax:+86-752-2033153 E-mail:Chao1984@gmail.com KSD301@yahoo.com