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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Description Prix 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
N° de stock RS 668-3036
Référence fabricant701530/888-22
MarqueJumo
209,33 €
Each
Unité
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 -
N° de stock RS 117-6659
Référence fabricantEMPLUS 600 NTC-PTC 230Vac
MarqueEliwell
92,95 €
Each
Unité
Analogue - 1 - 230 V - 74 x 32mm -5°C +55°C 59mm - Panel Mount EMPLUS 600 Lead Wire
N° de stock RS 420-035
Référence fabricantDR4020 TCJ-K-R-S-T
MarqueEliwell
361,47 €
Each
Unité
Thermocouple - - - 90 → 240 V ac -40 → +1600 °C 70 x 85mm -5°C +55°C 61mm - - DR 4000 -
N° de stock RS 500-1092
Référence fabricant701060/822-31
MarqueJumo
128,93 €
Each
Unité
J L K Thermocouple 2 Relay - 2 24 V ac, 12 → 24 V dc - - 0°C +55°C - - Panel Mount eTRON -
N° de stock RS 877-1454
Référence fabricantIC+ 902 12V 8A + NTC
MarqueEliwell
72,76 €
Each
Unité
NTC, PTC Relay 1 1 12 V - 74 x 32mm -50°C +110°C 59mm IP65 Panel Mount ICPlus Screw
N° de stock RS 613-7675
Référence fabricant701531/888-23
MarqueJumo
265,46 €
Each
Unité
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 -
N° de stock RS 746-3114
Référence fabricantE5C2-R20J AC100-240 0-300
MarqueOmron
142,70 €
Each
Unité
J Type Thermocouple - - - 100 → 240 V ac 0 → +300 °C 48 x 48mm - - 86.7mm - - E5C2 -
N° de stock RS 877-1463
Référence fabricantIC+ 902 230V 8A + NTC
MarqueEliwell
78,02 €
Each
Unité
NTC, PTC Relay 1 1 230 V - 74 x 32mm -5°C +55°C 59mm IP65 Panel Mount ICPlus Screw
N° de stock RS 535-0754
Référence fabricantE5C2-R20K AC100-240 0-800
MarqueOmron
146,00 €
Each
Unité
K Type Thermocouple - - - 100 → 240 V ac 0 → 800 °C 48 x 48mm -10°C +55°C 86.7mm - - E5C2 -
N° de stock RS 809-1035
Référence fabricantTC4830-53-110/230VAC
MarqueTempatron
87,15 €
Each
Unité
PT100 - - - 110 → 230 V ac - 48 x 48mm -10°C +50°C 89mm - 1/16 DIN - -
N° de stock RS 762-2133
Référence fabricantID+961-230V+NTC
MarqueEliwell
151,66 €
Each
Unité
NTC, PTC, RTD Digital 1 1 230 V -50 → +99 °C 74 x 32mm -5°C +55°C 60mm IP65 - IDPlus -
N° de stock RS 497-8979
Référence fabricant701050/811-31
MarqueJumo
116,28 €
Each
Unité
RTD 1 Relay - 1 12 → 24 V dc - 93.5 x 22.5mm 0°C +55°C 61.6mm IP20 DIN Rail eTRON -
N° de stock RS 328-1139
Référence fabricantE5C2-R20K AC100-240 0-600
MarqueOmron
143,80 €
Each
Unité
K Type Thermocouple - - - 100 → 240 V ac 0 → 600 °C 48 x 48mm -10°C +55°C 86.7mm - - E5C2 -
N° de stock RS 348-144
Référence fabricantFTST400K-110/240VAC
MarqueTempatron
113,42 €
Each
Unité
Thermocouple - - - 110 → 240 V ac 0 → +400 °C 48 x 48mm -10°C +50°C 112mm - - - -
N° de stock RS 535-0710
Référence fabricantE5C2-R20K AC100-240 0-400
MarqueOmron
143,80 €
Each
Unité
K Type Thermocouple - - - 100 → 240 V ac 0 → 400 °C 48 x 48mm -10°C +55°C 86.7mm - - E5C2 -
N° de stock RS 613-7782
Référence fabricant701540/821-02
MarqueJumo
108,43 €
Each
Unité
Thermocouple 1 Relay - 1 230 V ac - 76 x 36 mmmm 0°C +55°C - IP20, IP65 Panel Mount di eco -
N° de stock RS 344-552
Référence fabricantTC4810-02-110/240VAC
MarqueTempatron
118,58 €
Each
Unité
K Type Thermocouple - - - 110 → 240 V ac 0 → +400 °C 48 x 48mm -10°C +50°C 89mm - 1/16 DIN - -
N° de stock RS 198-328
Référence fabricantLR09604-110
152,61 €
Each
Unité
PT100 Relay 1 1 90 → 260 V ac - 96 x 96mm -10°C +50°C 53mm IP50 Panel Mount STATOP -
N° de stock RS 198-851
Référence fabricantLR09604-106
170,33 €
Each
Unité
K Type Thermocouple Relay 1 1 90 → 260 V ac - 96 x 96mm -10°C +50°C 53mm IP50 Panel Mount STATOP -
N° de stock RS 500-1109
Référence fabricant701060/832-02
MarqueJumo
128,93 €
Each
Unité
Current 2 Relay - 2 230 V ac - - 0°C +55°C - - Panel Mount eTRON -