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. 497-8963
Fabrikantnummer701060/811-02
FabrikantJumo
€ 114,90
Each
Aantal stuks
RTD 1 Relay - 1 230 V ac - 76 x 36mm 0°C +55°C 56mm - Panel Mount eTRON -
RS-stocknr. 497-8991
Fabrikantnummer701050/811-02
FabrikantJumo
€ 103,50
Each
Aantal stuks
RTD 1 Relay - 1 230 V ac - 93.5 x 22.5mm 0°C +55°C 61.6mm IP20 DIN Rail eTRON -
RS-stocknr. 500-1036
Fabrikantnummer701050/821-02
FabrikantJumo
€ 103,40
Each
Aantal stuks
Thermocouple 1 Relay - 1 115/230 V ac 0 → 500 °C 90 x 22.5mm 0°C +500°C - - DIN Rail eTRON -
RS-stocknr. 124-1058
FabrikantRS PRO
€ 73,13
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
€ 73,13
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. 746-3170
FabrikantnummerE5LC6
FabrikantOmron
€ 78,82
Each
Aantal stuks
- - - - - - - - - - - - E5L -
RS-stocknr. 500-1159
Fabrikantnummer701050/831-02
FabrikantJumo
€ 94,00
Each
Aantal stuks
Current 1 Relay - 1 230 V ac 0 → 100 °C 90 x 22.5 mmmm - - - - DIN Rail eTRON -
RS-stocknr. 348-1761
Fabrikantnummer40T-48-4-00-RR-0-0-0-0
FabrikantGefran
€ 247,46
Each
Aantal stuks
- Relay - 2 11 → 27 V ac/dc - 48 x 48mm - - 99mm IP65 - 40T48 -
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. 344-552
FabrikantnummerTC4810-02-110/240VAC
FabrikantTempatron
€ 118,58
Each
Aantal stuks
K Type Thermocouple - - - 110 → 240 V ac 0 → +400 °C 48 x 48mm -10°C +50°C 89mm - 1/16 DIN - -
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. 328-1094
FabrikantnummerE5C2-R20P-D AC100-240 0-200
FabrikantOmron
€ 141,60
Each
Aantal stuks
RTD - - - 100 → 240 V ac 0 → +200 °C 48 x 48mm -10°C +55°C 86.7mm - - E5C2 -
RS-stocknr. 497-9001
Fabrikantnummer701060/811-31
FabrikantJumo
€ 117,10
Each
Aantal stuks
RTD 1 Relay - 1 12 → 24 V dc, 24 V ac - 76 x 36mm 0°C +55°C 56mm - Panel Mount eTRON -
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. 500-1143
Fabrikantnummer701050/821-31
FabrikantJumo
€ 103,30
Each
Aantal stuks
Thermocouple 1 Relay - 1 12-24 V dc, 24 V ac 0 → 500 °C 90 x 22.5mm 0°C +500°C - - DIN Rail eTRON -
RS-stocknr. 497-8979
Fabrikantnummer701050/811-31
FabrikantJumo
€ 103,50
Each
Aantal stuks
RTD 1 Relay - 1 12 → 24 V dc - 93.5 x 22.5mm 0°C +55°C 61.6mm IP20 DIN Rail eTRON -
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. 500-1115
Fabrikantnummer701060/822-02
FabrikantJumo
€ 109,50
Each
Aantal stuks
J L K Thermocouple 2 Relay - 2 230 V ac - - 0°C +55°C - - Panel Mount eTRON -
RS-stocknr. 745-7936
FabrikantnummerPJEZMNN0E0
FabrikantCarel
€ 74,57
Each
Aantal stuks
NTC - - - 230 V ac -50 → +90 °C 36 x 81mm - - 34mm - - PJ Easy -
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
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