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. 390-7904
Fabrikantnummer40T-48-4-00-RR-0-0-0-1
FabrikantGefran
€ 282,06
Each
Aantal stuks
Thermocouple PT100 Relay - 2 100 V ac, 240 V ac - 48 x 48mm - - 99mm IP65 - 40T48 -
RS-stocknr. 124-1057
FabrikantRS PRO
€ 62,26
Each
Aantal stuks
NTC Relay 1 - 230 V ac - 54 x 94mm 0°C +50°C 68mm IP65 DIN Rail - Screw
RS-stocknr. 390-7932
Fabrikantnummer40T96-4-00-RR00-001 (EX 40T96-4-00-RR001
FabrikantGefran
€ 247,88
Each
Aantal stuks
- Relay - - 100 240 V ac - 108 x 48mm - - 105mm IP65 - 40T96 -
RS-stocknr. 124-1053
FabrikantRS PRO
€ 54,84
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. 124-1059
FabrikantRS PRO
€ 73,13
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. 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. 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. 344-546
FabrikantnummerTC4810-01-110/240VAC
FabrikantTempatron
€ 120,88
Each
Aantal stuks
K Type Thermocouple - - - 110 → 240 V ac 0 → +200 °C 48 x 48mm -10°C +50°C 89mm - 1/16 DIN - -
RS-stocknr. 328-1173
FabrikantnummerE5C2-R40K AC100-240 0-400
FabrikantOmron
€ 146,00
Each
Aantal stuks
K Type Thermocouple Relay - 1 100 → 240 V ac - 48 x 48 (1/16 DIN)mm -10°C +55°C 86.7mm IP00, IP40, IP66 - E5C2 -
RS-stocknr. 500-1092
Fabrikantnummer701060/822-31
FabrikantJumo
€ 128,93
Each
Aantal stuks
J L K Thermocouple 2 Relay - 2 24 V ac, 12 → 24 V dc - - 0°C +55°C - - Panel Mount eTRON -
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. 124-1054
FabrikantRS PRO
€ 54,84
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. 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. 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. 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. 668-3033
Fabrikantnummer701531/888-25
FabrikantJumo
€ 265,46
Each
Aantal stuks
Current, RTD, Thermocouple, Voltage 1 Logic, 2 Relay - 3 20 → 30 V ac/dc -200 → +850 °C 48 x 96mm 0°C +55°C 100mm - Panel Mount di 08 -
RS-stocknr. 535-0710
FabrikantnummerE5C2-R20K AC100-240 0-400
FabrikantOmron
€ 143,80
Each
Aantal stuks
K Type Thermocouple - - - 100 → 240 V ac 0 → 400 °C 48 x 48mm -10°C +55°C 86.7mm - - E5C2 -
RS-stocknr. 914-8473
FabrikantnummerSRT-N118-1321-1-4-001
FabrikantSimex
€ 256,35
Each
Aantal stuks
Thermoresistance Relay 3 2 230 V ac +250 → +1820 (Type B) °C, -200 → +1000 (Type E) °C, -200 → +1300 (Type N) °C, -200 → +1370 (Type K) °C, -200 → +400 (Type T) °C, -210 → +1200 (Type J) °C, -50 → +1768 (Type R) °C, -50 → +1768 (Type S) °C 110 x 80mm 0°C +50°C 67mm IP67 Wall Mount - Screw
RS-stocknr. 746-3177
FabrikantnummerE5LC5
FabrikantOmron
€ 106,30
Each
Aantal stuks
- - - - - - - - - - - - E5L -
RS-stocknr. 328-1101
FabrikantnummerE5C2-R20K AC100-240 0-200
FabrikantOmron
€ 143,80
Each
Aantal stuks
K Type Thermocouple - - - 100 → 240 V ac 0 → 200 °C 48 x 48mm -10°C +55°C 86.7mm - - E5C2 -
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