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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Rincian Komponen Brand Stock Input Type Output Type Number of Inputs Number of Outputs Supply Voltage Range Size Minimum Operating Temperature Maximum Operating Temperature Panel Depth Series IP Rating Mounting Type Termination Type
RS PRO On/Off Temperature Controller, 77 x 35mm, J Type Thermocouple, K Type Thermocouple, R Type Thermocouple, S Type
  • S$ 98,16
  • Each
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RS Pro 139 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 PRO On/Off Temperature Controller, 77 x 35mm, J Type Thermocouple, K Type Thermocouple, R Type Thermocouple, S Type
  • S$ 94,56
  • Each
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RS Pro 60 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 PRO On/Off Temperature Controller, 77 x 35mm, NTC Input, 24 V ac/dc Supply
  • S$ 93,28
  • Each
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RS Pro 58 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 PRO On/Off Temperature Controller, 77 x 35mm, J Type Thermocouple Input, 230 V ac Supply
  • S$ 138,59
  • Each
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RS Pro 49 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
RS PRO On/Off Temperature Controller, 77 x 35mm, NTC Input, 230 V ac Supply
  • S$ 93,52
  • Each
  • Compare
RS Pro 44 NTC Relay 1 1 230 V ac -60 → +150 °C 77 x 35mm 0°C +50°C 61mm - IP20, IP65 Panel Mount Screw
Jumo eTRON Thermostat, 93.5 x 22.5mm, RTD Input, 230 V ac Supply
  • S$ 205,11
  • Each
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  • No. Stok RS 497-8991
  • Merek Jumo
  • Pbrk. No. Komp. 701050/811-02
Jumo 41 RTD 1 Relay - 1 230 V ac - 93.5 x 22.5mm 0°C +55°C 61.6mm eTRON IP20 DIN Rail -
Eliwell ICPlus 902 On/Off Temperature Controller, 74 x 32mm, NTC, PTC Input, 230 V Supply
  • S$ 122,66
  • Each
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Eliwell 27 NTC, PTC Relay 1 1 230 V - 74 x 32mm -5°C +55°C 59mm ICPlus IP65 Panel Mount Screw
Omron E5C2 On/Off Temperature Controller, 48 x 48mm, K Type Thermocouple Input, 100 → 240 V ac Supply
  • S$ 171,95
  • Each
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  • No. Stok RS 328-1139
  • Merek Omron
  • Pbrk. No. Komp. E5C2-R20K AC100-240 0-600
Omron 26 K Type Thermocouple - - - 100 → 240 V ac 0 → 600 °C 48 x 48mm -10°C +55°C 86.7mm E5C2 - - -
Jumo eTRON Thermostat, 93.5 x 22.5mm, RTD Input, 12 → 24 V dc Supply
  • S$ 169,72
  • Each
  • Compare
  • No. Stok RS 497-8979
  • Merek Jumo
  • Pbrk. No. Komp. 701050/811-31
Jumo 24 RTD 1 Relay - 1 12 → 24 V dc - 93.5 x 22.5mm 0°C +55°C 61.6mm eTRON IP20 DIN Rail -
Jumo eTRON Thermostat, 90 x 22.5mm, Thermocouple Input, 115/230 V ac Supply
  • S$ 172,43
  • Each
  • Compare
  • No. Stok RS 500-1036
  • Merek Jumo
  • Pbrk. No. Komp. 701050/821-02
Jumo 23 Thermocouple 1 Relay - 1 115/230 V ac 0 → 500 °C 90 x 22.5mm 0°C +500°C - eTRON - DIN Rail -
RS PRO On/Off Temperature Controller, 77 x 35mm, PT100 Input, 230 V ac Supply
  • S$ 128,86
  • Each
  • Compare
RS Pro 23 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
Tempatron On/Off Temperature Controller, 48 x 48mm, RTD Input, 110 → 240 V ac Supply
  • S$ 157,60
  • Each
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Tempatron 23 RTD - - - 110 → 240 V ac -50 → +100 °C 48 x 48mm -10°C +50°C 112mm - - - -
Jumo eTRON Thermostat, , J L K Thermocouple Input, 230 V ac Supply
  • S$ 192,15
  • Each
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  • No. Stok RS 500-1115
  • Merek Jumo
  • Pbrk. No. Komp. 701060/822-02
Jumo 22 J L K Thermocouple 2 Relay - 2 230 V ac - - 0°C +55°C - eTRON - Panel Mount -
RS PRO On/Off Temperature Controller, 77 x 35mm, NTC Input, 24 V ac/dc Supply
  • S$ 116,69
  • Each
  • Compare
RS Pro 20 NTC Relay 1 2 24 V ac/dc -60 → +150 °C 77 x 35mm 0°C +50°C 61mm - IP20, IP65 Panel Mount Screw
Tempatron On/Off Temperature Controller, 48 x 48mm, PT100 Input, 110 → 230 V ac Supply
  • S$ 176,17
  • Each
  • Compare
Tempatron 20 PT100 Relay - 1 110 → 230 V ac - 48 x 48mm -10°C +50°C 89mm - IP40 1/16 DIN -
RS PRO Temperature Indicator, 77 x 35mm, NTC Input, 230 V ac Supply
  • S$ 99,00
  • Each
  • Compare
RS Pro 19 NTC - 1 - 230 V ac -60 → +150 °C 77 x 35mm 0°C +50°C 61mm - IP20, IP65 Panel Mount Screw
Jumo eTRON Thermostat, 76 x 36mm, RTD Input, 230 V ac Supply
  • S$ 193,12
  • Each
  • Compare
  • No. Stok RS 497-8963
  • Merek Jumo
  • Pbrk. No. Komp. 701060/811-02
Jumo 18 RTD 1 Relay - 1 230 V ac - 76 x 36mm 0°C +55°C 56mm eTRON - Panel Mount -
Omron E5C2 On/Off Temperature Controller, 48 x 48mm, K Type Thermocouple Input, 100 → 240 V ac Supply
  • S$ 167,30
  • Each
  • Compare
  • No. Stok RS 535-0710
  • Merek Omron
  • Pbrk. No. Komp. E5C2-R20K AC100-240 0-400
Omron 18 K Type Thermocouple - - - 100 → 240 V ac 0 → 400 °C 48 x 48mm -10°C +55°C 86.7mm E5C2 - - -
Tempatron On/Off Temperature Controller, 48 x 48mm, Thermocouple Input, 90 → 260 V ac Supply
  • S$ 255,43
  • Each
  • Compare
Tempatron 18 Thermocouple - - - 90 → 260 V ac -99 → +999 °C 48 x 48mm -10°C +50°C 84.5mm - - - -
RS PRO On/Off Temperature Controller, 77 x 35mm, NTC Input, 230 V ac Supply
  • S$ 93,52
  • Each
  • Compare
RS Pro 17 NTC Relay 1 1 230 V ac -60 → +150 °C 77 x 35mm 0°C +50°C 61mm - IP20, IP65 Panel Mount Screw
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