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Add:Yongli Road NO.6, Guodian, Yanguan Town, Haining City, Zhejiang 314412 China
Tel:+86-573-87297683 87179527
Fax:+86-573-87297683
Http://www.hn-yongli.com
Sales and Service:
ptc@hn-yongli.com
Technical Supports:
yl@hn-yongli.com |
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 Products |
| PTC Ovetemp protection |
PTC thermistors are widely employed as temperature sensors in electrical machines to monitor winding temperature. In this case, the PTC thermistor is wound directly into the winding so that direct thermal contact is produced.
The abrupt increase in the resistance of the thermistor at high temperatures can be used as a control signal for the tripping unit. To detect the temperature at several phases, thermistors should be connected in series. We offers standard single and triple sensor versions as well as custom assemblies. Available nominal threshold temperatures range from 70 to 180 °C.
Applications
| ·Thermal protection of winding in electric motors (Single and triple) |
·Limit temperature monitoring |
Advantages
| ·Thermistor pellet with insulating encapsulation (single sensor) or in series connection (triple sensor) |
·Low-resistance type, steep R/T curve |
| ·Silver-plated and Teflon-insulated wires |
·Extremely fast response due to small dimensions |
| ·Characteristics for nominal threshold temperatures from 70 up to 180℃ |
·RoHS-compatible |
Dimension Draw (unit: mm)
 
Triple Type Single Type
Technical Specifications of Triple/Single Over-temperature Sensors:
| Type |
Switch
Temp. Tb
(°C)
|
Resistance
Rmax @ 25°C
(Ohms)
|
Rmax@
(Tb-5)
(Ohms)
|
Rmin@
(Tb)
(Ohms)
|
Rmin@
(Tb+5)
(Ohms)
|
Rmin@
(Tb+15)
(Ohms)
|
Maximum
Voltage
Rating**
|
Maximum
Operating
Temp. (°C)
|
Color Coding of Wires
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Triple Over-temperature Sensors
|
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|
70
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240-380
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<1600
|
>2700
|
>4500
|
8500
|
36
|
160
|
White/brown
|
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|
80
|
210-330
|
<1600
|
>2700
|
>4500
|
8500
|
35
|
160
|
White/white
|
|
|
90
|
210-330
|
<1600
|
>2700
|
>4500
|
8500
|
35
|
160
|
Green/green
|
|
|
100
|
210-330
|
<1600
|
>2700
|
>4500
|
8500
|
35
|
160
|
Red/red
|
|
|
110
|
210-330
|
<1600
|
>2700
|
>4500
|
8500
|
35
|
160
|
Brown/brown
|
|
|
120
|
210-330
|
<1600
|
>2700
|
>4500
|
8500
|
35
|
160
|
Grey/grey
|
|
|
130
|
210-330
|
<1600
|
>2700
|
>4500
|
8500
|
35
|
160
|
Blue/blue
|
|
|
140
|
210-330
|
<1600
|
>2700
|
>4500
|
8500
|
35
|
160
|
White/blue
|
|
|
145
|
210-330
|
<1600
|
>2700
|
>4500
|
8500
|
35
|
200
|
White/black
|
|
|
150
|
210-330
|
<1600
|
>2700
|
>4500
|
8500
|
35
|
200
|
Black/black
|
|
|
155
|
210-330
|
<1600
|
>2700
|
>4500
|
8500
|
35
|
200
|
Blue/black
|
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|
160
|
210-330
|
<1600
|
>2700
|
>4500
|
8500
|
35
|
200
|
Blue/red
|
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170
|
210-330
|
<1600
|
>2700
|
>4500
|
8500
|
35
|
200
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White/green
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180
|
210-330
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<1600
|
>2700
|
>4500
|
8500
|
35
|
220
|
White/red
|
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Triple Over-temperature Sensors
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70
|
60-110
|
<500
|
---
|
>1600
|
>5000
|
24
|
160
|
White/brown
|
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|
80
|
60-110
|
<500
|
---
|
>1600
|
>5000
|
24
|
160
|
White/white
|
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90
|
60-110
|
<500
|
---
|
>1600
|
>5000
|
24
|
160
|
Green/green
|
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|
100
|
60-110
|
<500
|
---
|
>1600
|
>5000
|
24
|
160
|
Red/red
|
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110
|
60-110
|
<500
|
---
|
>1600
|
>5000
|
24
|
160
|
Brown/brown
|
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120
|
60-110
|
<500
|
---
|
>1600
|
>5000
|
24
|
160
|
Grey/grey
|
|
|
130
|
60-110
|
<500
|
---
|
>1600
|
>5000
|
24
|
160
|
Blue/blue
|
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140
|
60-110
|
<500
|
---
|
>1600
|
>5000
|
24
|
160
|
White/blue
|
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145
|
60-110
|
<500
|
---
|
>1600
|
>5000
|
24
|
200
|
White/black
|
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|
150
|
60-110
|
<500
|
---
|
>1600
|
>5000
|
24
|
200
|
Black/black
|
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155
|
60-110
|
<500
|
---
|
>1600
|
>5000
|
24
|
160
|
Blue/black
|
|
|
160
|
60-110
|
<500
|
---
|
>1600
|
>5000
|
24
|
200
|
Blue/red
|
|
|
170
|
60-110
|
<500
|
---
|
>1600
|
>5000
|
24
|
200
|
White/green
|
|
|
180
|
60-110
|
<500
|
---
|
>1600
|
>5000
|
24
|
220
|
White/red
|
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