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.


...
อ่านเพิ่มเติม อ่านน้อยกว่า

คัดกรอง / Filters

กำลังดูสินค้า 1 - 20 รายการจาก 176 รายการ / Viewing 1 - 20 of 176 products
ผลการค้นหาต่อหน้า / Results Per Page
รายละเอียดสินค้า / Description ราคา / 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. 124-1045
Brand :RS PRO
THB2,214.09
Each
Units
NTC Relay 1 1 230 V ac -60 → +150 °C 77 x 35mm 0°C +50°C 61mm IP20, IP65 Panel Mount - Screw
RS Stock No. 124-1048
Brand :RS PRO
THB2,001.86
Each
Units
NTC Relay 1 2 24 V ac/dc -60 → +150 °C 77 x 35mm 0°C +50°C 61mm IP20, IP65 Panel Mount - Screw
RS Stock No. 124-1058
Brand :RS PRO
THB2,905.40
Each
Units
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 Stock No. 124-1054
Brand :RS PRO
THB2,214.09
Each
Units
NTC Relay 1 1 230 V ac -60 → +150 °C 77 x 35mm 0°C +50°C 61mm IP20, IP65 Panel Mount - Screw
RS Stock No. 124-1060
Brand :RS PRO
THB2,503.90
Each
Units
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 Stock No. 124-1052
Brand :RS PRO
THB2,818.28
Each
Units
J Type Thermocouple Relay 1 1 24 V ac -30 → +400 °C 77 x 35mm 0°C +50°C 61mm IP20, IP65 Panel Mount - Screw
RS Stock No. 875-1232
Brand :RS PRO
THB3,229.69
Each
Units
PT100 Relay 1 1 230 V ac 0 → +400 °C 96 x 96mm 0°C +50°C 96mm IP65, NEMA 4X 1/4 DIN RS PRO Screw
RS Stock No. 875-1267
Brand :RS PRO
THB2,881.48
Each
Units
RTD, Thermocouple Relay 1 1 230 V ac -50 → +100 °C 35 x 77mm 0°C +50°C 62.5mm IP65, NEMA 4X 1/16 DIN RS PRO Screw
RS Stock No. 124-1075
Brand :RS PRO
THB2,337.54
Each
Units
NTC - 1 - 230 V ac -60 → +150 °C 77 x 35mm 0°C +50°C 61mm IP20, IP65 Panel Mount - Screw
RS Stock No. 124-1074
Brand :RS PRO
THB2,675.87
Each
Units
Current, Voltage None 4 - 24 V ac - 77 x 35mm 0°C +50°C 71mm IP20, IP65 Panel Mount - Screw
RS Stock No. 124-1073
Brand :RS PRO
THB2,675.87
Each
Units
Current, Voltage - 4 - 230 V ac - 77 x 35mm 0°C +50°C 71mm IP20, IP65 Panel Mount - Screw
RS Stock No. 124-1059
Brand :RS PRO
THB2,503.90
Each
Units
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 Stock No. 124-1057
Brand :RS PRO
THB2,420.39
Each
Units
NTC Relay 1 - 230 V ac - 54 x 94mm 0°C +50°C 68mm IP65 DIN Rail - Screw
RS Stock No. 124-1049
Brand :RS PRO
THB2,601.97
Each
Units
NTC Relay 2 3 230 V ac -60 → +150 °C 77 x 35mm 0°C +50°C 61mm IP20, IP65 Panel Mount - Screw
RS Stock No. 124-1056
Brand :RS PRO
THB2,312.22
Each
Units
NTC Relay 1 2 230 V ac -60 → +150 °C 77 x 35mm 0°C +50°C 61mm IP20, IP65 Panel Mount - Screw
RS Stock No. 124-1076
Brand :RS PRO
THB1,901.99
Each
Units
NTC - 1 - 24 V ac/dc -60 → +150 °C 77 x 35mm 0°C +50°C 61mm IP20, IP65 Panel Mount - Screw
RS Stock No. 875-1264
Brand :RS PRO
THB2,478.77
Each
Units
Thermocouple SSR 1 1 230 V ac 0 → +800 °C 35 x 77mm 0°C +50°C 62.5mm IP65, NEMA 4X 1/16 DIN RS PRO Screw
RS Stock No. 875-1226
Brand :RS PRO
THB6,639.40
Each
Units
Linear, RTD, Thermocouple Relay 1 2 24 V ac/dc - 72 x 72mm 0°C +50°C 87.5mm IP65, NEMA 4X 1/8 DIN RS PRO Screw
RS Stock No. 798-3435
Brand :RS PRO
THB2,687.06
Each
Units
NTC Relay 1 3 10 30 V dc -50 +100 °C, -58 +212 °F 76 x 34.5mm 0°C +50°C 65mm NEMA 4X DIN Rail RS PRO Screw
RS Stock No. 124-1050
Brand :RS PRO
THB2,601.97
Each
Units
NTC Relay 2 3 24 V ac/dc -60 → +150 °C 77 x 35mm 0°C +50°C 61mm IP20, IP65 Panel Mount - Screw
Related Products
Universal process indicators that are fully configurable with ...
Description:
Universal process indicators that are fully configurable with linear input signal range, thermoresistance, thermocouple or thermistor.2 configurable alarm outputs and normally open contact (N/O).Indication of the size measured by an adhesive label on the front face (for most common physical ...
Automatic maximum & minimum storageDecimal point selectableReverse polarity ...
Description:
Automatic maximum & minimum storageDecimal point selectableReverse polarity protection5 measurements per second (display refresh every 1-2 seconds)Resolution: 0.01°C (0.1°F) or 1°C (1°F)Accuracy: PT100 0.1%, Ni100 0.2%Temperature drift: 0.01K/K ambientOperating temperature: -20 to +65°CDIN 24 x 48mm housing; ...
PT100 InputIntegrated defrosting functionHeating or cooling is configurableLimit ...
Description:
PT100 InputIntegrated defrosting functionHeating or cooling is configurableLimit monitoringAdjustable switching hysteresisTime delayed switch-on after power-on selectableOperating hours counterSymbols for operating modes, °C, °F, hours, minutes and seconds on displayParameter level protected by codeSetup program ...
PT100 InputHeating or cooling is configurableLimit monitoringAdjustable switching ...
Description:
PT100 InputHeating or cooling is configurableLimit monitoringAdjustable switching hysteresisSimple, Space saving installationTime delayed switch-on after power-on selectable3 digit LCD with special characters for °F and °CParameter level protected by code.