Omron Temperature Monitoring Relay With SPST Contacts, 100 → 240 V ac Supply Voltage

  • RS Stock No. 111-3129
  • Mfr. Part No. K8DT-TH1TA
  • Brand Omron
Technical Reference
Legislation and Compliance
RoHS Certificate of Compliance
COO (Country of Origin): CN
Product Details

K8DT-TH Temperature Monitoring Relays

Omron K8DT-TH temperature monitoring relay, ideal to prevent heater overheating. Featuring a self-latching output to contribute to safe equipment operation.

Set the temperature with simple rotary switches
Connect a thermocouple or platinum resistance thermometer.
Width of 17.5 mm to reduce space required in panels.
Push-In Plus Terminal that reduce wiring work.
Double-insertion holes for crossover wiring (all terminals).

K8DT-TH Self-Latching Temperature Monitoring Relay.

• Downsize control panels.
• Reduced wiring.
• Detects errors in Motors and other equipment.
• Use in either over current or under current mode.
• Function as an alarm.
• Set threshold values.
• Alarm output can be set as a relay or transistor output.
• Input signal – Voltage, current, water level electrode and temperature (thermocouple or platinum resistance thermometer) can be input.
• Lower power consumption.
• Side by side mounting is possible.
• Long term contact reliability.
• Reliable in poor noise environments.
• Slim profile 17.5 mm

K8DT-TH1TA Self-Latching Temperature Relay.

• Power supply 100 V ac to 240 V ac/dc.
• Thermocouple K, J, T, E.
• Platinum-resistance thermometer Pt100, Pt,1000.
• Transistor output
• Self-latching.
• Prevents heater overheating.
• Three rotary DIP switches.
• Current capacity 10 A (per pole)
• Insertions 50 times.

Features and Benefits.

• Automatic reset
• Green LED Power (PWR) power
• Red LED output (ALM) alarm
• One SPDT contact relay.
• DIN Rail Mounted or Screw Mounted.
• Weight 100 g
• Case material PC, UL 94 V-0.
• Colour N1.5
• Protection IP20 (terminals)

What is a Monitoring / Measuring Relay?

A monitoring / measuring relay is a protective control device, various types are available suiting what you wish to monitor. The relays receive input signals then monitor them and then output an alarm signal when a set value is reached (alarm relays). The relays protect your equipment against over voltage and over current faults. Monitoring relays monitor AC power supplies, voltage and current, analogue signals detecting unusual activity in equipment against set alarm thresholds.

Types of Monitoring Relays Available?

• Motor protection relays
• Temperature monitoring relays
• Water level control relays
• Voltage
• Current


EN61010-1, EN 61326-1, UL 61010-1 IP 20 Terminals

Omron K8DT Series Control Relays

Omron K8DT measuring and monitoring relays are part of the Value Design for Panel concept that takes control panel design and manufacturing to a new level. The K8DT series protect important equipment from damage using various measuring and monitoring relays that conform to international safety standards. Low power consumption and low heat generation design offer a long service life.

Space Saving

The K8DT series can help downsize control panels by reducing the width between wiring ducts and void panel space. The slim body allows space to mount more devices in the same size of control panel to increase control panel functionality.

Push-In Plus Terminals

Push-In Plus terminal blocks on all K8DT relays reduce the time and work involved in wiring. The Push-In Plus terminals allow solid and stranded wires with pin terminals or ferrules to be inserted without the need for tools.

Attribute Value
Monitoring Application Temperature
Supply Voltage 100 → 240 V ac
Contact Configuration SPST
Temperature Sensitivity Overtemperature
Temperature Sensing Range 0 → +999°C
Standards Met CE Certified, EN 61010-1, EN 61326-1, UL, UL 61010-1
Series K8DT-TH
Length 90mm
Width 17.5mm
Operating Temperature Range -20 → +60 °C
Terminal Type Screw
Mounting Type DIN Rail
Minimum Operating Temperature -20°C
Number of Poles 1
Minimum Temperature Sensed 0°C
Height 90mm
Maximum Operating Temperature +60°C
Dimensions 90 x 17.5 x 90 mm
Maximum Temperature Sensed 999°C
3 In stock - FREE next working day delivery available
Price Each
£ 91.45
(exc. VAT)
£ 109.74
(inc. VAT)
Per unit
1 +
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