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      1241045/46-

E

-01-

161006

Instruction Manual
RS Pro 35 x 77mm Defrost Thermostat, NTC, Single Output
Stock Number: 

124-1045, 124-1046

•  35x77mm.
•  On-Off control.
•  Control output for cooling or heating.
•  Single NTC probe input.
•  Range -60

.0

 to 150

.0

°C.

•  Defrost function.
•  Compressor protection settings.
•  Probe failure setting, output status can be set to ON, OFF or pulse. 
•  Sensor input offset setting. 
•  “Smart Defrost” feature.
•  Adjustable defrost duration and intervals.
•  6 selectable warning tones.
•  High and low alarm limits, absolute or deviation.
•  Temperature units °C or °F
•  Digital input ;
       - External alarm 
       - Initiate defrost
•  CE marked

Please read this document carefully before using this product. The guarantee will be invalidated if the device is 
damaged by not following instructions detailed in the manual. The company shall not be responsible for any damage 
or losses however caused, which may be experienced as a result of the installation or use of this product.

CONNECTION DIAGRAM

1241045  &  1241046

  is  intended  for  installation  in  control  panels.  Make  sure  that  the  device  is  used

only  for  intended  purpose.  The  electrical  connections  must  be  carried  out  by  a  qualified  staff
and must be according to the relevant locally applicable regulations. During an installation, all of the cables that 
are connected to the device must be free of electrical power. The device must be protected against inadmissible 
humidity, vibrations, severe soiling and make sure that the operation temperature is not exceeded. The cables 
should not be close to the power cables or components. 

SUPPLY:

NOTE:

184-253V AC 
50/60Hz 4VA

Line

Neutral

230V AC
Supply

 

Switch

Note: 

Cable size: 1,5mm²

Fuse 

F 100 mA 

250V AC

Fuse should 
be connected

1)

 Mains supply cords shall meet the requirements of  

    

IEC 60227 or IEC 60245. 

2)

 In accordance with the safety regulations, the power 

    

supply switch shall bring the identification of the 

    

relevant instrument and it should be easily 

    

accessible by the operator.

1

2

Holding screw 
0.4-0.5Nm 

Equipment is protected throughout
by DOUBLE INSULATION.

ENVIRONMENTAL CONDITIONS

 Height

 Max. 2000m

 Ambient

 

/

 S

torage 

T

emperature

 Relative 

H

umidity

0 ... +50°C/-40 ... 85°C (without icing)

Protection Class

According to EN60529;    Front panel : IP65,  Rear panel : IP20
                                              

 Do not use the device in locations subject to corrosive and flammable gasses.

 Supply 

V

oltage

230V AC +%10 -%20, 50/60Hz  or  24V AC/DC ±%10

 Power 

C

onsumption

Max. 5VA
2.5mm² screw-terminal connections

   ±1% 
   4 digits, 12.5mm, 7 segment  LED

 Connection
 Scale
 Sensitivity
 Accuracy
 Time 

A

ccuracy

 Display
 EMC
 Safety Requirements 

 EN 61326-1: 201

3

 EN 61010-1: 2010 (Pollution degree 2, overvoltage category II)

ELECTRICAL CHARACTERISTICS

-60.0 ... +150.0°C (-76.0 ... +302.0°F)

0.1°C (Can be selected as 0.1

ºC 

or

 1ºC

.) 

±1°C  

CONTROL

 Control 

T

ype

 Single set-point control
 On-Off control

 Control 

A

lgorithm

 Hysteresis

 Adjustable between 1 ... 20.0

 

°C

  Life 

E

xpectancy for 

R

elay

OUTPUTS

HOUSING

 Housing 

T

ype

 Suitable for flush -panel mounting

 Dimensions  

 H35xW77xD61mm 

 Weight 

 Approx. 190g (After packing)  

 Enclosure 

M

aterial

 Self extinguishing plastics.

 

While cleaning the device,solvents (thinner, gasoline, acid etc.) or corrosive materials must not be used.

Relay Output

Without load  30.000.000 mechanical; 
250V AC, 8A resistive load 100.000 electrical operation.

Relay : NO+NC 250V AC,8A  (resistive load),
1/2HP, 0.37KW 240V AC (inductive load)

Max. humidity 80% for temperatures up to 31°C decreasing linearly to 
50% relative humidity at 40°C.

DIMENSIONS

 Note:  

1)

 Panel thickness should

be maximum 7mm.

2)

 If there is no 60mm free

space at the back side of
the device,it would be 
difficult to remove it from
the panel. 

Flush mounting

clamp

For removing mounting clamps:  

Push the flush-mounting 

clamp in direction 

1

 as shown 

in the figure below.Then,pull
out the clamp in direction 

2

 .

 

71,5mm

2

8

,5

m

m

Panel Cut-out

  61mm                    5mm

  Flush mounting
         clamp

Panel

Rubber
 packing

2

Depth

77mm

3

5

m

m

1

EN

FOR MORE INFORMATION VISIT THIS SITE

http://www.rs-components.com/index.html

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1241045

DIGITAL
THERMOSTAT

Made In Turkey

1

1241046

DIGITAL
THERMOSTAT

Made In Turkey

1

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SN: XXXXXXXXX

R

S

K

E

Y

230V AC
50/60Hz

  

  

 N

T

C

 

11 12

D

IG

 I

N

P

COMPRESSOR

250V 8A~

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K

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Y

  

  

 N

T

C

 

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IG

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COMPRESSOR

250V 8A~

24V AC/DC 

±

10

%

50/60Hz  5VA

SN: XXXXXXXXX

124-1045

124-1046

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