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Hihg Temperature Resistant Limit Switch
Hihg Temperature Resistant Limit Switch

Model No: JDHK-2

 
JDHK-2Y Rocking Plunger type High temperature resistant switch
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’s widely used in electrical power, chemical industry, petroleum, textiles, steel and other industries.
 
 
 
Dimension Drawing:
 
 
 
Contact type:
 
 
 
 
 
Characteristics:◆ Double loop limit switch, used widely 
◆ solid cast aluminum shell◆ Resistant to oil, water & pressure
◆ Due to the position indicator panel, it’s easy to maintain
◆ Due to multiple actuators, it’s convenient to use.
◆ Mechanical life is long due to the design of double reed.
◆ Temperature resistance: 250 ℃
◆ High mechanical strength
 
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
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
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

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 ℃ to + 250 ℃
Humidity <95% RH
Service life of mechanical durability l: 15,000,000 times
Electrical: 500,000 times
Weight:  about 275g
Degree of protection IP67


Performance Characteristics:
 

 
Models
JDHK-2GL
JDHK-2G
JDHK-2W
JDHK-2WS
JDHK-2L
JDHK-2T
JDHK-2U
JDHK-2Y
JDHK-2WJ
JDHK-2WG
JDHK-2G1
OF Max.
1360g
2720g
150g
29g
1360g
142g
1200g
2720g
120g
80g
2720g
RF Min.
227g
910g
-
-
227g
28g
-
910g
-
-
910g
PT Max.
20 º
1.7mm
28mm
28mm
20 º
20 º
55 º
1.7mm
28mm
28mm
1.7mm
OT Min.
30 º
5.6mm
-
-
30 º
30 º
35 º
6.4mm
-
-
5.6mm
MD Max.
12 º
1mm
-
-
12 º
12 º
-
1mm
-
-
1mm
TF Max.
2720g
-
-
-
2720g
200g
-
-
-
-
2720g
TT Min.
50 º
6.5±0.8mm
-
-
50 º
50 º
OP:90±10 º
OP:34±2.8mm
-
-
6.5±0.8mm
 
 

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