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. 762-2133
FabrikantnummerID+961-230V+NTC
FabrikantEliwell
€ 151,66
Each
Aantal stuks
NTC, PTC, RTD Digital 1 1 230 V -50 → +99 °C 74 x 32mm -5°C +55°C 60mm IP65 - IDPlus -
RS-stocknr. 877-1463
FabrikantnummerIC+ 902 230V 8A + NTC
FabrikantEliwell
€ 78,02
Each
Aantal stuks
NTC, PTC Relay 1 1 230 V - 74 x 32mm -5°C +55°C 59mm IP65 Panel Mount ICPlus Screw
RS-stocknr. 479-6698
FabrikantnummerID 985 LX-12V-8A-PTC
FabrikantEliwell
€ 205,41
Each
Aantal stuks
PTC Relay - 4 12 V ac/dc -50 → +140 °C 74 x 32mm -5°C +55°C 60mm IP65 Panel Mount ID 985LX Screw
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. 877-1479
FabrikantnummerIC+ 915 230V 8A TCJ/K PT100
FabrikantEliwell
€ 135,46
Each
Aantal stuks
RTD, Thermocouple Digital, Relay 1 2 230 V - 74 x 32mm -5°C +55°C 59mm IP65 Panel Mount ICPlus Screw
RS-stocknr. 762-2137
FabrikantnummerID+971-12V+NTC
FabrikantEliwell
€ 154,20
Each
Aantal stuks
NTC, PTC, RTD Digital 2 1 12 V -55 → +140 °C 74 x 32mm -5°C +55°C 60mm IP65 - IDPlus -
RS-stocknr. 117-6659
FabrikantnummerEMPLUS 600 NTC-PTC 230Vac
FabrikantEliwell
€ 88,12
Each
Aantal stuks
Analogue - 1 - 230 V - 74 x 32mm -5°C +55°C 59mm - Panel Mount EMPLUS 600 Lead Wire
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. 420-047
FabrikantnummerDR4010 PTC+PTC
FabrikantEliwell
€ 221,47
Each
Aantal stuks
PTC - - - 90 → 240 V ac -55 → +150 °C 70 x 85mm -5°C +55°C 61mm - - DR 4000 -
RS-stocknr. 877-1460
FabrikantnummerIC+ 915 12V 8A TCJ/K PT100
FabrikantEliwell
€ 129,70
Each
Aantal stuks
RTD, Thermocouple Digital, Relay 1 2 12 V - 74 x 32mm -5°C +55°C 59mm IP65 Panel Mount ICPlus Screw
RS-stocknr. 762-2130
FabrikantnummerID+961-12V+NTC
FabrikantEliwell
€ 112,93
Each
Aantal stuks
NTC, PTC, RTD Digital 1 1 12 V -50 → +99 °C 74 x 32mm -5°C +55°C 60mm IP65 - IDPlus -
RS-stocknr. 762-2146
FabrikantnummerID+971-230V+NTC
FabrikantEliwell
€ 239,67
Each
Aantal stuks
NTC, PTC, RTD Digital 2 1 230 V -55 → +140 °C 74 x 32mm -5°C +55°C 60mm IP65 - IDPlus -
RS-stocknr. 117-6658
FabrikantnummerEMPLUS 600 PT100/TCJ-K 230Vac
FabrikantEliwell
€ 92,14
Each
Aantal stuks
Analogue - 1 - 230 V ac -150 → +650 (PT100) °C, -40 → +750 (TCJ-K) °C 74 x 32mm -5°C +55°C 59mm - Panel Mount EMPLUS 600 Lead Wire
RS-stocknr. 877-1466
FabrikantnummerIC+ 902 230V 15A + NTC
FabrikantEliwell
€ 85,52
Each
Aantal stuks
NTC, PTC Relay 1 1 230 V - 74 x 32mm -5°C +55°C 59mm IP65 Panel Mount ICPlus Screw
RS-stocknr. 762-2149
FabrikantnummerID+974-12V+NTC
FabrikantEliwell
€ 155,14
Each
Aantal stuks
NTC, PTC, RTD Digital 2 1 12 V -55 → +140 °C 74 x 32mm -5°C +55°C 60mm IP65 - IDPlus -
RS-stocknr. 509-0884
FabrikantnummerDR 985 PTC
FabrikantEliwell
€ 272,87
Each
Aantal stuks
PTC - - - 230 V ac - 70 x 85mm -5°C +55°C 61mm - - DR 985 -
RS-stocknr. 509-0878
FabrikantnummerDR 983 PTC
FabrikantEliwell
€ 154,59
Each
Aantal stuks
PTC - - - 230 V ac - 70 x 85mm -5°C +55°C 61mm - - DR 983 -