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Travel Switch enduring high temperature for long time
Travel Switch enduring high temperature for long time

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It's used in high temperature environment for a long time without failure from oxidization or pollution.

Characteristics:

  Temperature 250 °C
  Double circuit limit switch, widely used
  The one with solid cast aluminum housing
  High mechanical strength
  Resistant to oil, water & pressure
  Easy to maintenance
  Easy to use
  Mechanical life is long

 

 Summary:

The interior part: fully sealed high temperature contact switches whose maximum allowable current is 5A/AC 220V. Since the contact is suffered special treatment, it can be used in high temperature environment for a long time without failure from oxidization or pollution.

The highest temperature of JDHK-2 series is 350 °C, while the long term working temperature is 250 °C. As for JDHK-3 series, The highest temperature is 650 °C, while the long term working temperature is 550 °C. It has filled the domestic blank of ultra-high temperature switch field. Every switch has roller, adjustable rod, pressure plunger to meet your different need. It’s widely used in electrical, chemical, petroleum, textiles, steel and other industries.

 

Specification:

Rated Votage

Non-inductive Load( A ) 

Inductive Load ( A ) 

(V)

Resistive Load

Bulb Load

Inductive Load

Motor Load

 

NC

NO

NC

NO

NC

NO

NC

NO

125VAC

10

3

1.5

10

5

2

250VAC

5

2

1

5

3

1

480VAC

3

1.5

0.8

3

1.5

0.8

600VAC

1

1

0.5

1.5

1

0.5

8VDC

10

6

3

10

6

14VDC

10

6

3

10

6

30VDC

6

4

3

6

4

125VDC

0.8

0.2

0.2

0.8

0.2

250VDC

0.4

0.1

0.1

0.4

0.1

 

 

Technical Parameters:

1. Operating speed : 0.5mm to 50cm / sec
2. Frequency mechanical movement: 120 beats / min, electrical: 30 beats / min
3. Contact resistance:  25m Ω or less (initial)
4. Insulation resistance: 100m Ω above (under the 500VDC)  1000VAC, 50/60HZ for 1 minute (same polarity)
5. Withstand voltage:
    No-load current and load current between parts: 1500VAC, 50/60 HZ for 1 minute
    Between each terminal and ground: 1500VAC, 50/60 HZ for 1 minute
6. Vibration 10-55HZ, 1.5mm double amplitude
7. The impact of mechanical durability: 1, 000m / Sec 2 (about 100G 'S more)
8. Malfunction: 300m / Sec 2 (about 30G 'S more)
9. Ambient temperature -10 °C to + 250 °C
10. Humidity <95% RH
11. Service life of mechanical durability l: 15,000,000 times
12. Electrical: 500,000 times
13. Weight of about 275g
14. Degree of protection IP67

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