1
Temperature Monitoring Relay
K8AK-TH
Compact and Slim Relay Ideal for
Temperature Alarms and Monitoring
• Excessive temperature increases can be prevented and
abnormal temperatures can be monitored.
• Temperature monitoring in slim design with a width of just
22.5 mm.
• Rotary switches simplifies temperature settings.
• Universal-input support for thermocouple or platinum
resistance thermometer sensor input.
• Change the output relay between normally open and
normally closed operation.
• Alarm status identification with LED indicator.
•Self-holding output.
Ordering Information
K8AK-TH (Temperature Input Models)
* Refer to Setting Ranges on page 3 for the setting ranges.
Note: When ordering, designate the power supply specification. Different Relay models are used for 100 to 240 VAC and 24 VAC/VDC.
Refer to Safety Precautions on page 8.
For the most recent information on models that have been certified for
safety standards, refer to your OMRON website.
Power supply
voltage
Type Output relays Input types Setting units (setting range) Model
100 to 240 VAC Temperature
input
1 relay Thermocouple or platinum
resistance thermometer
Setting unit: 1°C or 1°F (0 to 999°C/°F) K8AK-TH11S 100-240VAC
Thermocouple Setting unit: 10°C/°F* K8AK-TH12S 100-240VAC
24 VAC/DC Thermocouple or platinum
resistance thermometer
Setting unit: 1°C or 1°F (0 to 999°C/°F) K8AK-TH11S 24VAC/DC
Thermocouple Setting unit: 10°C/°F* K8AK-TH12S 24VAC/DC
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