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Brief Introduction:
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The interior adopts high temperature resistant, totally enclosed contact switches whose maximum allowable current is 5A/AC 220V. Through special processing to the contact, the switch 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, while the long term working temperature is 250. As for JDHK-3 series, the highest temperature is 650, while the long term working temperature is 550 . It has filled the domestic blank of ultra-high temperature switch field. Every switch has roller, adjustable rod, pressure plunger to meet your different needs. It is widely used in electrical power, chemical industry, petroleum, textiles, steel and other industries.
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Contact type:
Characteristics:
Temperature resistance: 250 °C
Double loop limit switch, used widely
solid cast aluminum shell
Double loop limit switch, used widely
solid cast aluminum shell
High mechanical strength
Resistant to oil, water & pressure
Due to the position indicator panel, it is easy to maintain
Due to multiple actuators, its convenient to use.
Mechanical life is long due to the design of double reed.
Resistant to oil, water & pressure
Due to the position indicator panel, it is easy to maintain
Due to multiple actuators, its convenient to use.
Mechanical life is long due to the design of double reed.
Dimension Drawing:
Specification:
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Rated Votage
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Non-inductive Load( A )
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Inductive Load ( A )
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(V)
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Resistive Load
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Bulb Load
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Inductive Load
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Motor Load
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NC
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NO
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NC
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NO
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NC
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NO
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NC
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NO
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125VAC
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10
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3
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1.5
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10
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5
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2
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250VAC
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5
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2
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1
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5
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3
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1
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480VAC
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3
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1.5
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0.8
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3
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1.5
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0.8
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600VAC
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1
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1
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0.5
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1.5
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1
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0.5
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8VDC
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10
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6
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3
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10
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6
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14VDC
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10
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6
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3
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10
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6
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30VDC
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6
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4
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3
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6
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4
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125VDC
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0.8
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0.2
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0.2
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0.8
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0.2
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250VDC
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0.4
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0.1
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0.1
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0.4
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0.1
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Note:
1 When power factor of the inductive load is above 0.4 (AC), the time constant is below 7msec (DC).
2 Inrush current of the bulb load is 10 times as large as the steady-state current; the inrush current of the motor load is 6 times as large as the steady current.
1 When power factor of the inductive load is above 0.4 (AC), the time constant is below 7msec (DC).
2 Inrush current of the bulb load is 10 times as large as the steady-state current; the inrush current of the motor load is 6 times as large as the steady current.
More Information:
Operating speed : 0.5mm to 50cm / sec
Frequency mechanical movement: 120 beats / min, electrical: 30 beats / min
Contact resistance: 25m Ω or less (initial)
Insulation resistance: 100m Ω above (under the 500VDC) 1000VAC, 50/60HZ for 1 minute (same polarity)
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
Vibration 10-55HZ, 1.5mm double amplitude
The impact of mechanical durability: 1, 000m / Sec 2 (about 100G 'S more)
Malfunction: 300m / Sec 2 (about 30G 'S more)
Ambient temperature -10°C to + 250°C
Humidity <95% RH
Service life of mechanical durability l: 15,000,000 times
Electrical: 500,000 times
Weight: about 275g
Degree of protection IP67
Frequency mechanical movement: 120 beats / min, electrical: 30 beats / min
Contact resistance: 25m Ω or less (initial)
Insulation resistance: 100m Ω above (under the 500VDC) 1000VAC, 50/60HZ for 1 minute (same polarity)
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
Vibration 10-55HZ, 1.5mm double amplitude
The impact of mechanical durability: 1, 000m / Sec 2 (about 100G 'S more)
Malfunction: 300m / Sec 2 (about 30G 'S more)
Ambient temperature -10°C to + 250°C
Humidity <95% RH
Service life of mechanical durability l: 15,000,000 times
Electrical: 500,000 times
Weight: about 275g
Degree of protection IP67