Digital-Temperature-Controller-Selectron-CH402

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CH402 / CH403
COOLING CONTROLLER
DIMENSIONS  (in mm)
Panel Cutout
33
28 29
75
3.5
74.5
71
SUPPLY               85 to 270 VAC/ DC. 
VOLTAGE
(AC@ 50 or 60 Hz, 2.75 VA)
Optional 24 VAC/ DC (Consult         
factory).
DISPLAY
CH403: 3 digits, 0.5", Red LED's.
CH402: 2 digits, 0.5", Red LED's.
SENSOR TYPE
CONTROL
ON/ OFF with programmable
ACTION
hysteresis.
SET POINTS
Main, High Alarm, Low Alarm.  
ACCURACY
± 0.25% (full scale).
SETTING
Via keys on front panel.
RELAY
Heat mode.
ACTION
Cool mode.
SENSOR 
PP indicated on display, relay off     
BREAK
for probe Open / Over-range / 
Under range.
ALARM
High Alarm: display alternates
INDICATIONS
between ‘HA’ / ‘PV’ value for 1sec. 
Low Alarm: display alternates
between ‘LA’ / ‘PV’ value for 1sec.
OUTPUT
For main set point: SPST, 10A 
@230 VAC. SSR drive 
For Alarm: 2
TEMPERATURE Operating: 0 to 50OC, 
Storage: -5 to 50OC.
HUMIDITY
95% RH.
WEIGHT              110 grams
NTC probe TSP04
available on 
request. 
20A relay models available.
1 VDC @ 10mA.
5A relay models available on 
request.
SPECIFICATIONS
FEATURES
! Compact Size.
!
Indication in oC & oF selectable.
! High indication accuracy: ± 0.25%.
!
Sensor NTC factory set.
!
Programmable High and Low alarm.
! Restart time delay.
!
Setpoint lock
!
Time based defrost management.
!
Selectable Hysteresis.
!
Programmable display offset.
!
Selectable relay action (Heat / Cool).
! Universal supply voltage : 85 to 270 VAC/DC. 
Optional 24VAC / DC models available(Consult 
factory).
! Compliance: CE, RoHS
TERMINAL CONNECTION
ORDERING CODE - 
ORDERING EXAMPLE 
1.
CH403
2
 PROBE
Accessory for use 
with CH402 / 403
MODEL
TSP04
Sensor 
type
Temperature
 range (0C)
Nominal 
Resistance
NTC probe
-40 to +100
10 K ohms
 @ 250C
Main : 20 A
Alarm : Not applicable
CH403
CH402
36 x 72
36 x 72
NO
SENSOR
+ -
COM
ALARM
N
-
+
L
1 2 3 4 5 6 7 8 9 10 11 12
NC
FOR
 SSR
+ -
COM
NO
SENSOR
N
-
+
L
1 2 3 4 5 6 7 8 9 10 11 12
-
+
1 2 3 4 5 6 7 8 9 10 11 12
FOR
 SSR
+ -
N
L
NO COM NC NO2 COM2
SENSOR
CH402 / CH403 - 1
CH402 / CH403 - 2
CH402 / CH403 - 3
A
Main and Alarm Output 
Main :10 A relay
Alarm : 12 VDC to drive SSR
Main :20 A
Alarm: Not applicable
Main :10 A relay
Alarm : 5 A relay
1
2
3
A
NOTE : For 24VAC/DC models add suffix ‘- 24’
RtonHaiS
l
p
 c o m
Industrial Supply Syndicate, 54, Ezra Street, Kolkata - 700 001
Phone: 32916080, 22356676  Fax: 033 3022 2923  Email: info@industrialindia.com