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 124-1047
MarqueRS PRO
59,05 €
Each
Unité
NTC Relay 1 2 230 V ac -60 → +150 °C 77 x 35mm 0°C +50°C 61mm IP20, IP65 Panel Mount - Screw
Nouveau
N° de stock RS 198-1169
MarqueRS PRO
226,00 €
Each
Unité
Thermocouple Analogue Relay 1 2 230 V - 86 mm x 35 mm 0°C +50°C - IP20 DIN Rail - -
N° de stock RS 124-1074
MarqueRS PRO
75,12 €
Each
Unité
Current, Voltage None 4 - 24 V ac - 77 x 35mm 0°C +50°C 71mm IP20, IP65 Panel Mount - Screw
N° de stock RS 798-3435
MarqueRS PRO
73,87 €
Each
Unité
NTC Relay 1 3 10 → 30 V dc -50 → +100 °C, -58 → +212 °F 76 x 34.5mm 0°C +50°C 65mm NEMA 4X DIN Rail RS PRO Screw
N° de stock RS 124-1055
MarqueRS PRO
63,94 €
Each
Unité
NTC Relay 1 2 24 V ac/dc -60 +150 °C 77 x 35mm 0°C +50°C 61mm IP20, IP65 Panel Mount - Screw
N° de stock RS 124-1076
MarqueRS PRO
53,41 €
Each
Unité
NTC - 1 - 24 V ac/dc -60 → +150 °C 77 x 35mm 0°C +50°C 61mm IP20, IP65 Panel Mount - Screw
N° de stock RS 124-1057
MarqueRS PRO
62,26 €
Each
Unité
NTC Relay 1 - 230 V ac - 54 x 94mm 0°C +50°C 68mm IP65 DIN Rail - Screw
Nouveau
N° de stock RS 198-1176
MarqueRS PRO
111,87 €
Each
Unité
RTD Analogue Relay 1 2 230 V ac - 96mm x 96mm 0°C +50°C - IP20, IP65 - - -
N° de stock RS 124-1053
MarqueRS PRO
54,84 €
Each
Unité
NTC Relay 1 1 24 V ac/dc -60 → +150 °C 77 x 35mm 0°C +50°C 61mm IP20, IP65 Panel Mount - Screw
Nouveau
N° de stock RS 198-1173
MarqueRS PRO
107,35 €
Each
Unité
Thermocouple Relay - 2 10 → 30 V dc - 48 mm x 48 mm 0°C +50°C - IP20, IP65 DIN Rail - -
N° de stock RS 875-1267
MarqueRS PRO
67,50 €
Each
Unité
RTD, Thermocouple Relay 1 1 230 V ac -50 → +100 °C 35 x 77mm 0°C +50°C 62.5mm IP65, NEMA 4X 1/16 DIN RS PRO Screw
Nouveau
N° de stock RS 198-1171
MarqueRS PRO
77,97 €
Each
Unité
RTD Analogue Relay 1 2 230 V ac - 72mm x 72mm 0°C +50°C - IP20, IP65 - - -
Nouveau
N° de stock RS 198-1170
MarqueRS PRO
77,97 €
Each
Unité
Thermocouple Analogue Relay 1 2 230 V ac - 72mm x 72mm 0°C +50°C - IP20, IP65 - - -
N° de stock RS 875-1239
MarqueRS PRO
78,16 €
Each
Unité
J Type Thermocouple Relay 1 1 230 V ac 0 → +800 °C 72 x 72mm 0°C +50°C 95.5mm IP65, NEMA 4X 1/8 DIN RS PRO Screw
N° de stock RS 875-1214
MarqueRS PRO
195,33 €
Each
Unité
Linear, RTD, Thermocouple Relay 1 2 100 → 240 V ac - 48 x 96mm 0°C +50°C 86.6mm IP65, NEMA 4X 1/8 DIN (H) RS PRO Screw
Nouveau
N° de stock RS 198-1175
MarqueRS PRO
111,87 €
Each
Unité
Thermocouple Analogue Relay 1 2 230 V ac - 96mm x 96mm 0°C +50°C - - - - -
N° de stock RS 497-8991
Référence fabricant701050/811-02
MarqueJumo
116,28 €
Each
Unité
RTD 1 Relay - 1 230 V ac - 93.5 x 22.5mm 0°C +55°C 61.6mm IP20 DIN Rail eTRON -
N° de stock RS 746-3170
Référence fabricantE5LC6
MarqueOmron
106,30 €
Each
Unité
- - - - - - - - - - - - E5L -
N° de stock RS 497-8963
Référence fabricant701060/811-02
MarqueJumo
128,93 €
Each
Unité
RTD 1 Relay - 1 230 V ac - 76 x 36mm 0°C +55°C 56mm - Panel Mount eTRON -
N° de stock RS 511-7478
Référence fabricantIR33C0LR00
MarqueCarel
143,12 €
Each
Unité
NTC - - - 12 → 24 V ac -50 → +90 °C 76.2 x 34.2mm -10°C +50°C 94mm - - IR33 -