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Nara
Pressure Switchs are used as protection against too low a suction
pressure or too high a discharge pressure on compressors in refrigeration
and air conditioning plant. Nara Pressure Switchs are also used for
starting and stopping refrigeration compressors and fans for air-cooled
condensers. Nara Pressure Switchs are fitted with a single pole double
throw(SPDT) changeover switch. The position of the switch is determined
by the pressure switch setting and the pressure at the connector.
Two independent SPDT switches are controlled by the high and low pressure
sides of the control. The low pressure, automatic reset side provides
all the features available with a single SPDT low pressure control.
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SPDT switch to provide open or
close on pressure rise for maximum application flexibility. Standard
accessories include mounting bracket and knob with lock plate. Factory
set pressure switch designed for use in refrigeration units of quantity
production such as room air conditioner (heat pump), packaged air
conditioner (heat pump), water chiller etc. For use with fluorinated
refrigerants as well as with air and water. ( Allowable Fluid Temp.
: -45 to 135¡É) Type HPS for Universal application. Micro-switch ensures
reliable switching. Mounting bracket supplied as standard. Various
contact functions available. Several models available in drip-proof
enclosure for special applications. |
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RATED AMPS (A) RATED VOLTAGE (V) |
AC 125 V |
AC 250 V |
|
NON-INDUCTIVE CURRENT |
10 A |
5 A |
|
INDUCTIVE CURRENT |
8 A |
4 A |
|
FULL LOAD |
8.5 A |
4.5 A |
|
STARTING |
40 A |
20 A |
|
PURPOSE PROTECTION DEGREE |
IP40 |
IP40 |
|
|
MODEL NO. |
RANGE |
DIFFERENTIAL |
FACTORY SETTING |
MAX. BELLOWS PRESSURE (kgf/ ) |
Wt (kg) |
DIMENSION |
|
MIN |
MAX |
MIN |
MAX |
OFF (ON) |
ON (OFF) |
A |
B |
C |
|
JC-206 |
-50cm Hg |
6 |
0.6 |
4 |
2 |
3 |
16.5 |
0.42 |
34.4 |
36 |
22.4 |
| JC-210 |
1 |
10 |
1 |
3 |
4 |
6 |
16.5 |
| JC-220 |
5 |
20 |
3 |
5 |
15 |
12 |
10 |
22 |
32.7 |
18.5 |
| JC-230 |
5 |
30 |
3 |
10 |
20 |
15 |
|
MODEL NO. |
RANGE |
DIFFERENTIAL |
FACTORY SETTING |
MAX. BELLOWS PRESSURE (kgf/) |
Wt (kg) |
|
MIN |
MAX |
MIN |
MAX |
OFF (ON) |
ON (OFF) |
|
JC-306 |
LOW SIDE |
-50cm
Hg |
6 |
0.6 |
4 |
2 |
3 |
16.5 |
0.61 |
| HIGH
SIDE |
8 |
30 |
APPROX. 4 FIXED |
20 |
16 |
40 |
|
JC-306M |
LOW
SIDE |
-50cm
Hg |
6 |
0.6 |
4 |
2 |
3 |
16.5 |
| HIGH
SIDE |
8 |
30 |
MANUAL RESET |
20 |
MANUAL
RESET |
40 |
|
JC-606 |
LOW
SIDE |
-50cm
Hg |
6 |
0.6 |
4 |
2 |
3 |
16.5 |
| HIGH
SIDE |
8 |
30 |
APPROX. 4 FIXED |
20 |
16 |
40 |
|
JC-606M |
LOW
SIDE |
-50cm
Hg |
6 |
0.6 |
4 |
2 |
3 |
16.5 |
| HIGH
SIDE |
8 |
30 |
MANUAL RESET |
20 |
MANUAL
RESET |
40 |
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