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. 124-1045
FabrikantRS PRO
56,49 €
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. 124-1059
FabrikantRS PRO
75,32 €
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. 124-1048
FabrikantRS PRO
60,82 €
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. 124-1058
FabrikantRS PRO
75,32 €
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. 124-1060
FabrikantRS PRO
75,32 €
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. 124-1054
FabrikantRS PRO
56,49 €
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. 124-1044
FabrikantRS PRO
90,59 €
Each
Aantal stuks
- Relay - 1 230 V ac - 96 x 96mm 0°C +400°C 50mm IP65 Panel Mount - -
RS-stocknr. 875-1292
FabrikantRS PRO
94,74 €
Each
Aantal stuks
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
RS-stocknr. 124-1056
FabrikantRS PRO
65,86 €
Each
Aantal stuks
NTC Relay 1 2 230 V ac -60 → +150 °C 77 x 35mm 0°C +50°C 61mm IP20, IP65 Panel Mount - Screw
RS-stocknr. 124-1046
FabrikantRS PRO
56,49 €
Each
Aantal stuks
NTC Relay 1 1 24 V ac/dc -60 → +150 °C 77 x 35mm 0°C +50°C 61mm IP20, IP65 Panel Mount - Screw
RS-stocknr. 124-1049
FabrikantRS PRO
73,86 €
Each
Aantal stuks
NTC Relay 2 3 230 V ac -60 → +150 °C 77 x 35mm 0°C +50°C 61mm IP20, IP65 Panel Mount - Screw
RS-stocknr. 124-1050
FabrikantRS PRO
73,86 €
Each
Aantal stuks
NTC Relay 2 3 24 V ac/dc -60 → +150 °C 77 x 35mm 0°C +50°C 61mm IP20, IP65 Panel Mount - Screw
RS-stocknr. 198-1169
FabrikantRS PRO
232,78 €
Each
Aantal stuks
Thermocouple Analogue Relay 1 2 230 V - 86 mm x 35 mm 0°C +50°C - IP20 DIN Rail - -
RS-stocknr. 198-1173
FabrikantRS PRO
110,57 €
Each
Aantal stuks
Thermocouple Relay - 2 10 → 30 V dc - 48 mm x 48 mm 0°C +50°C - IP20, IP65 DIN Rail - -
RS-stocknr. 198-1170
FabrikantRS PRO
80,31 €
Each
Aantal stuks
Thermocouple Analogue Relay 1 2 230 V ac - 72mm x 72mm 0°C +50°C - IP20, IP65 - - -
RS-stocknr. 198-1175
FabrikantRS PRO
115,23 €
Each
Aantal stuks
Thermocouple Analogue Relay 1 2 230 V ac - 96mm x 96mm 0°C +50°C - - - - -
RS-stocknr. 198-1171
FabrikantRS PRO
80,31 €
Each
Aantal stuks
RTD Analogue Relay 1 2 230 V ac - 72mm x 72mm 0°C +50°C - IP20, IP65 - - -
RS-stocknr. 124-1075
FabrikantRS PRO
55,01 €
Each
Aantal stuks
NTC - 1 - 230 V ac -60 → +150 °C 77 x 35mm 0°C +50°C 61mm IP20, IP65 Panel Mount - Screw
RS-stocknr. 124-1073
FabrikantRS PRO
77,37 €
Each
Aantal stuks
Current, Voltage - 4 - 230 V ac - 77 x 35mm 0°C +50°C 71mm IP20, IP65 Panel Mount - Screw
RS-stocknr. 875-1226
FabrikantRS PRO
188,03 €
Each
Aantal stuks
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
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