On / Off Temperature Controllers

On-off temperature controllers (also called signallers), are simple temperature control devices. An optimal temperature is preset and when it's exceeded the output switches off. When the temperature falls below the optimal preset, the output switches on. The output value has only an 'on' or 'off' option, with no middle state.

What are on-off temperature controllers used for?

On-off temperature controllers are used for monitoring purposes in heating environments. They prevent rapid increases in temperature that may cause damage to contactors and valves by cutting off the power. These controllers are often used where there isn't a need for precision temperature control. They are beneficial in applications where the system can't handle continuous interruptions. On-off controllers are found in temperature alarms and thermostats.

Types of on-off temperature controllers

A typical example of an on-off temperature controller is the thermostat in a heating system. If the temperature drops below the preset level, the heating system will switch on, and vice versa. Another example is that of a limit controller. It protects a system against overheating or overcooling by shutting down the power if the temperature exceeds a preset level.


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Omschrijving Prijs Input Type Output Type Number of Inputs Number of Outputs Supply Voltage Range Size Minimum Operating Temperature Maximum Operating Temperature Panel Depth IP Rating Mounting Type Series Termination Type
RS-stocknr. 497-8991
Fabrikantnummer701050/811-02
FabrikantJumo
103,50 €
Each
Aantal stuks
RTD 1 Relay - 1 230 V ac - 93.5 x 22.5mm 0°C +55°C 61.6mm IP20 DIN Rail eTRON -
RS-stocknr. 746-3170
FabrikantnummerE5LC6
FabrikantOmron
78,82 €
Each
Aantal stuks
- - - - - - - - - - - - E5L -
RS-stocknr. 497-8963
Fabrikantnummer701060/811-02
FabrikantJumo
114,90 €
Each
Aantal stuks
RTD 1 Relay - 1 230 V ac - 76 x 36mm 0°C +55°C 56mm - Panel Mount eTRON -
RS-stocknr. 511-7478
FabrikantnummerIR33C0LR00
FabrikantCarel
143,12 €
Each
Aantal stuks
NTC - - - 12 → 24 V ac -50 → +90 °C 76.2 x 34.2mm -10°C +50°C 94mm - - IR33 -
RS-stocknr. 117-6659
FabrikantnummerEMPLUS 600 NTC-PTC 230Vac
FabrikantEliwell
92,95 €
Each
Aantal stuks
Analogue - 1 - 230 V - 74 x 32mm -5°C +55°C 59mm - Panel Mount EMPLUS 600 Lead Wire
RS-stocknr. 124-1059
FabrikantRS PRO
71,00 €
Each
Aantal stuks
J Type Thermocouple, K Type Thermocouple, R Type Thermocouple, S Type Thermocouple, T Type Thermocouple Relay 1 1 230 V ac 0 → +1300 (K Type Thermocouple) °C, 0 → +1700 (R Type Thermocouple) °C, 0 → +1700 (S Type Thermocouple) °C, 0 → +400 (T Type Thermocouple) °C, 0 → +600 (J Type Thermocouple) °C 77 x 35mm 0°C +50°C 73mm IP20, IP65 Panel Mount - Screw
RS-stocknr. 124-1045
FabrikantRS PRO
53,24 €
Each
Aantal stuks
NTC Relay 1 1 230 V ac -60 → +150 °C 77 x 35mm 0°C +50°C 61mm IP20, IP65 Panel Mount - Screw
RS-stocknr. 668-3036
Fabrikantnummer701530/888-22
FabrikantJumo
176,70 €
Each
Aantal stuks
Current, RTD, Thermocouple, Voltage 1 Logic, 1 Relay - 2 20 → 53 V ac/dc -200 → +850 °C 48 x 24mm 0°C +55°C 100mm - Panel Mount di 32 -
RS-stocknr. 420-035
FabrikantnummerDR4020 TCJ-K-R-S-T
FabrikantEliwell
361,47 €
Each
Aantal stuks
Thermocouple - - - 90 → 240 V ac -40 → +1600 °C 70 x 85mm -5°C +55°C 61mm - - DR 4000 -
RS-stocknr. 124-1048
FabrikantRS PRO
57,33 €
Each
Aantal stuks
NTC Relay 1 2 24 V ac/dc -60 → +150 °C 77 x 35mm 0°C +50°C 61mm IP20, IP65 Panel Mount - Screw
RS-stocknr. 124-1060
FabrikantRS PRO
71,00 €
Each
Aantal stuks
J Type Thermocouple, K Type Thermocouple, R Type Thermocouple, S Type Thermocouple, T Type Thermocouple Relay 1 1 24 V ac 0 → +1300 (K Type Thermocouple) °C, 0 → +1700 (R Type Thermocouple) °C, 0 → +1700 (S Type Thermocouple) °C, 0 → +400 (T Type Thermocouple) °C, 0 → +600 (J Type Thermocouple) °C 77 x 35mm 0°C +50°C 73mm IP20, IP65 Panel Mount - Screw
RS-stocknr. 500-1092
Fabrikantnummer701060/822-31
FabrikantJumo
109,50 €
Each
Aantal stuks
J L K Thermocouple 2 Relay - 2 12 → 24 V dc, 24 V ac - - 0°C +55°C - - Panel Mount eTRON -
RS-stocknr. 124-1058
FabrikantRS PRO
71,00 €
Each
Aantal stuks
PT100 Relay 1 2 230 V ac -200 → +600 (PT100) °C, -99.9 → +300 (PT100) °C 77 x 35mm 0°C +50°C 73mm IP20, IP65 Panel Mount - Screw
RS-stocknr. 613-7675
Fabrikantnummer701531/888-23
FabrikantJumo
254,78 €
Each
Aantal stuks
Current, RTD, Thermocouple, Voltage 1 Logic, 2 Relay - 3 110 → 240 V ac -200 → +850 °C 96 x 48mm 0°C +55°C 100mm - Panel Mount di 08 -
RS-stocknr. 877-1454
FabrikantnummerIC+ 902 12V 8A + NTC
FabrikantEliwell
72,76 €
Each
Aantal stuks
NTC, PTC Relay 1 1 12 V - 74 x 32mm -50°C +110°C 59mm IP65 Panel Mount ICPlus Screw
RS-stocknr. 535-0754
FabrikantnummerE5C2-R20K AC100-240 0-800
FabrikantOmron
105,09 €
Each
Aantal stuks
K Type Thermocouple - - - 100 → 240 V ac 0 → 800 °C 48 x 48mm -10°C +55°C 86.7mm - - E5C2 -
RS-stocknr. 746-3114
FabrikantnummerE5C2-R20J AC100-240 0-300
FabrikantOmron
140,50 €
Each
Aantal stuks
J Type Thermocouple - - - 100 → 240 V ac 0 → +300 °C 48 x 48mm - - 86.7mm - - E5C2 -
RS-stocknr. 124-1054
FabrikantRS PRO
53,24 €
Each
Aantal stuks
NTC Relay 1 1 230 V ac -60 → +150 °C 77 x 35mm 0°C +50°C 61mm IP20, IP65 Panel Mount - Screw
RS-stocknr. 497-8979
Fabrikantnummer701050/811-31
FabrikantJumo
103,50 €
Each
Aantal stuks
RTD 1 Relay - 1 12 → 24 V dc - 93.5 x 22.5mm 0°C +55°C 61.6mm IP20 DIN Rail eTRON -
RS-stocknr. 809-1035
FabrikantnummerTC4830-53-110/230VAC
FabrikantTempatron
51,49 €
Each
Aantal stuks
PT100 - - - 110 → 230 V ac - 48 x 48mm -10°C +50°C 89mm - 1/16 DIN - -
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