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.


...
Read more Read less

Filters

Viewing 1 - 13 of 13 products
Results per page
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 Stock No. 328-1088
Mfr. Part No.E5C2-R20P-D AC100-240 -50-50
BrandOmron
HK$1,152.56
Each
units
RTD - - - 100 → 240 V ac -50 → +50 °C 48 x 48mm -10°C +55°C 86.7mm - - E5C2 -
RS Stock No. 746-3170
Mfr. Part No.E5LC6
BrandOmron
HK$730.75
Each
units
- - - - - - - - - - - - E5L -
RS Stock No. 328-1167
Mfr. Part No.E5C2-R40K AC100-240 0-200
BrandOmron
HK$1,155.08
Each
units
K Type Thermocouple Relay - 1 100 → 240 V ac - 48 x 48mm -10°C +55°C 86.7mm IP00, IP40, IP66 - E5C2 -
RS Stock No. 328-1094
Mfr. Part No.E5C2-R20P-D AC100-240 0-200
BrandOmron
HK$1,155.08
Each
units
RTD - - - 100 → 240 V ac 0 → +200 °C 48 x 48mm -10°C +55°C 86.7mm - - E5C2 -
RS Stock No. 328-1139
Mfr. Part No.E5C2-R20K AC100-240 0-600
BrandOmron
HK$1,066.96
Each
units
K Type Thermocouple - - - 100 → 240 V ac 0 → 600 °C 48 x 48mm -10°C +55°C 86.7mm - - E5C2 -
RS Stock No. 328-1173
Mfr. Part No.E5C2-R40K AC100-240 0-400
BrandOmron
HK$995.50
Each
units
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 Stock No. 328-1101
Mfr. Part No.E5C2-R20K AC100-240 0-200
BrandOmron
HK$995.50
Each
units
K Type Thermocouple - - - 100 → 240 V ac 0 → 200 °C 48 x 48mm -10°C +55°C 86.7mm - - E5C2 -
RS Stock No. 535-0754
Mfr. Part No.E5C2-R20K AC100-240 0-800
BrandOmron
HK$995.50
Each
units
K Type Thermocouple - - - 100 → 240 V ac 0 → 800 °C 48 x 48mm -10°C +55°C 86.7mm - - E5C2 -
RS Stock No. 535-0710
Mfr. Part No.E5C2-R20K AC100-240 0-400
BrandOmron
HK$1,021.02
Each
units
K Type Thermocouple - - - 100 → 240 V ac 0 → 400 °C 48 x 48mm -10°C +55°C 86.7mm - - E5C2 -
RS Stock No. 746-3114
Mfr. Part No.E5C2-R20J AC100-240 0-300
BrandOmron
HK$1,155.08
Each
units
J Type Thermocouple - - - 100 → 240 V ac 0 → +300 °C 48 x 48mm - - 86.7mm - - E5C2 -
RS Stock No. 535-0811
Mfr. Part No.E5C2-R40K AC100-240 0-800
BrandOmron
HK$1,155.08
Each
units
K Type Thermocouple Relay - 1 100 → 240 V ac - 48 x 48mm -10°C +55°C 86.7mm IP00, IP40, IP66 - E5C2 -
RS Stock No. 746-3111
Mfr. Part No.E5C2-R20J AC100-240 0-200
BrandOmron
HK$1,155.08
Each
units
J Type Thermocouple - - - 100 → 240 V ac 0 → +200 °C 48 x 48mm - - 86.7mm - - E5C2 -
RS Stock No. 535-0748
Mfr. Part No.E5C2-R20K AC100-240 0-1200
BrandOmron
HK$995.50
Each
units
- - - - - - - - - - - - - -