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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Description Price 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庫存編號 497-8991
製造零件編號701050/811-02
BrandJumo
HK$1,120.43
單位
RTD 1 Relay - 1 230 V ac -200 °C → 600 °C 93.5 x 22.5mm 0°C +55°C 61.6mm IP20 DIN Rail eTRON -
RS庫存編號 497-9001
製造零件編號701060/811-31
BrandJumo
HK$1,261.50
單位
RTD 1 Relay - 1 12 → 24 V dc, 24 V ac -200 °C → 600 °C 76 x 36mm 0°C +55°C 56mm IP20, IP65 Panel Mount eTRON -
RS庫存編號 500-1092
製造零件編號701060/822-31
BrandJumo
HK$1,261.50
單位
J L K Thermocouple 2 Relay - 2 12 → 24 V dc, 24 V ac - - 0°C +55°C - - Panel Mount eTRON -
RS庫存編號 500-1165
製造零件編號701060/832-31
BrandJumo
HK$1,261.50
單位
Current 2 Relay - 2 12 → 24 V dc, 24 V ac - 76 x 36mm 0°C +55°C 56mm - Panel Mount eTRON -
RS庫存編號 613-7782
製造零件編號701540/821-02
BrandJumo
HK$953.98
單位
Thermocouple 1 Relay - 1 230 V ac - 76 x 36 mmmm 0°C +55°C - IP20, IP65 Panel Mount di eco -
RS庫存編號 497-8985
製造零件編號701050/811-05
BrandJumo
HK$1,120.43
單位
RTD 1 Relay - 1 115 V ac - 93.5 x 22.5mm 0°C +55°C 61.6mm IP20 DIN Rail eTRON -
RS庫存編號 500-1115
製造零件編號701060/822-02
BrandJumo
HK$1,261.50
單位
J L K Thermocouple 2 Relay - 2 230 V ac - - 0°C +55°C - - Panel Mount eTRON -
RS庫存編號 467-147
製造零件編號701061/820-32/236
BrandJumo
HK$1,840.58
單位
RTD 4 Relay - 4 12 → 24 V ac/dc - 76 x 36 mmmm 0°C +55°C - - Panel Mount eTRON M100 -
RS庫存編號 668-3036
製造零件編號701530/888-22
BrandJumo
HK$1,980.35
單位
Current, RTD, Thermocouple, Voltage 1 Logic, 1 Relay - 2 20 → 53 V ac/dc -200 → +850 °C 48 x 24mm 0°C +55°C 100mm - Panel Mount di 32 -
RS庫存編號 500-1137
製造零件編號701050/831-31
BrandJumo
HK$1,120.43
單位
Voltage 1 Relay - 1 24 V ac, 230 V ac -50 → +180 °C 90 x 22.5mm 0°C +55°C - - DIN Rail eTRON -
全新
RS庫存編號 201-1663
製造零件編號00718287
BrandJumo
HK$1,316.11
單位
PT100, Thermocouple Analogue Relay 5 2 230 V - 90mm x 21.5mmmm - - - - - eTRON T100 -
全新
RS庫存編號 201-1668
製造零件編號00721354
BrandJumo
HK$1,164.25
單位
PT100, Thermocouple Analogue Relay 5 2 12 → 24 Vdc, 24 Vac - 90mm x 21.5mmmm - - - - - eTRON T100 -
RS庫存編號 500-1109
製造零件編號701060/832-02
BrandJumo
HK$1,261.50
單位
Current 2 Relay - 2 230 V ac - - 0°C +55°C - - Panel Mount eTRON -
RS庫存編號 613-7675
製造零件編號701531/888-23
BrandJumo
HK$2,605.70
單位
Current, RTD, Thermocouple, Voltage 1 Logic, 2 Relay - 3 110 → 240 V ac -200 → +850 °C 96 x 48mm 0°C +55°C 100mm - Panel Mount di 08 -
RS庫存編號 497-9017
製造零件編號701060/811-05
BrandJumo
HK$1,261.50
單位
RTD 1 Relay - 1 115 V ac - - 0°C +55°C - - Panel Mount eTRON -
全新
RS庫存編號 201-1665
製造零件編號00721265
BrandJumo
HK$1,164.25
單位
PT100, Thermocouple Analogue Relay 5 2 230 V - 90mm x 21.5mmmm - - - - - eTRON T100 -
全新
RS庫存編號 201-1669
製造零件編號00721355
BrandJumo
HK$1,164.25
單位
PT100, Thermocouple Analogue Relay 5 2 230 V - 90mm x 21.5mmmm - - - - - eTRON T100 -
RS庫存編號 497-8979
製造零件編號701050/811-31
BrandJumo
HK$1,120.43
單位
RTD 1 Relay - 1 12 → 24 V dc -200 °C → 600 °C 93.5 x 22.5mm 0°C +55°C 61.6mm IP20 DIN Rail eTRON -
RS庫存編號 668-3033
製造零件編號701531/888-25
BrandJumo
HK$2,605.70
單位
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庫存編號 467-131
製造零件編號701061/822-32/000
BrandJumo
HK$2,278.52
單位
RTD 4 Relay - 3 12 → 24 V ac/dc - 76 x 36 mmmm 0°C +55°C - - Panel Mount eTRON M100 -