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 124-1048
MarqueRS PRO
59,05 €
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 124-1059
MarqueRS PRO
73,13 €
Each
Unité
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
N° de stock RS 124-1045
MarqueRS PRO
54,84 €
Each
Unité
NTC Relay 1 1 230 V ac -60 → +150 °C 77 x 35mm 0°C +50°C 61mm IP20, IP65 Panel Mount - Screw
N° de stock RS 124-1058
MarqueRS PRO
73,13 €
Each
Unité
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
N° de stock RS 124-1060
MarqueRS PRO
73,13 €
Each
Unité
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
N° de stock RS 124-1054
MarqueRS PRO
54,84 €
Each
Unité
NTC Relay 1 1 230 V ac -60 → +150 °C 77 x 35mm 0°C +50°C 61mm IP20, IP65 Panel Mount - Screw
N° de stock RS 124-1044
MarqueRS PRO
87,95 €
Each
Unité
- Relay - 1 230 V ac - 96 x 96mm 0°C +400°C 50mm IP65 Panel Mount - -
N° de stock RS 124-1056
MarqueRS PRO
63,94 €
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
N° de stock RS 875-1292
MarqueRS PRO
91,98 €
Each
Unité
Digital Current 1 1 100 240 V ac - 72 x 72mm 0°C +50°C 95.5mm IP65, NEMA 4X 1/8 DIN RS PRO Screw
N° de stock RS 124-1050
MarqueRS PRO
71,71 €
Each
Unité
NTC Relay 2 3 24 V ac/dc -60 → +150 °C 77 x 35mm 0°C +50°C 61mm IP20, IP65 Panel Mount - Screw
N° de stock RS 124-1049
MarqueRS PRO
71,71 €
Each
Unité
NTC Relay 2 3 230 V ac -60 → +150 °C 77 x 35mm 0°C +50°C 61mm IP20, IP65 Panel Mount - Screw
N° de stock RS 124-1046
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
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
N° de stock RS 124-1051
MarqueRS PRO
75,64 €
Each
Unité
J Type Thermocouple Relay 1 1 230 V ac -30 → +400 °C 77 x 35mm 0°C +50°C 61mm IP20, IP65 Panel Mount - Screw
N° de stock RS 875-1226
MarqueRS PRO
182,55 €
Each
Unité
Linear, RTD, Thermocouple Relay 1 2 24 V ac/dc - 72 x 72mm 0°C +50°C 87.5mm 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
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
N° de stock RS 875-1264
MarqueRS PRO
64,62 €
Each
Unité
Thermocouple SSR 1 1 230 V ac 0 → +800 °C 35 x 77mm 0°C +50°C 62.5mm IP65, NEMA 4X 1/16 DIN RS PRO Screw
Nouveau
N° de stock RS 198-1169
MarqueRS PRO
226,00 €
Each
Unité
Thermocouple Analogue Relay 1 2 230 V - 86 mm x 35 mm - - - - - - -
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