Measuring and Monitoring Relays

Omron's measuring and monitoring relays provide an alarm status identification with an LED indicator

Image of Omron's Measuring and Monitoring RelayOmron's K8 monitoring relays are available in versions for both single- and three-phase applications and provide a wide range of solutions for detecting common issues such as under- and overvoltage, phase loss, under- and overcurrent, over temperature, phase sequence errors, and voltage asymmetry conditions. The K8 range includes monitoring relays to suit all commonly used power supply systems around the world with three-phase types covering the 200 V to 480 V voltage range. This feature, together with global standards compliance, makes them an ideal choice for use in export projects.

Typical applications for these versatile monitoring relays include the protection of pumps and other driven equipment against reverse rotation, guarding against motor damage under overload conditions, and the detection of broken drive belts and similar faults that leave motors running unloaded.

Benefits and Features

  • Upper and lower voltage or current monitoring for industrial applications
  • Single- and three-phase monitoring, sequence, or loss of phase
  • Conductive level controllers for fill or overflow monitoring applications
  • Universal-input support for thermocouple or platinum resistance thermometer sensor input
  • Temperature monitoring in slim design with a width of just 22.5 mm
  • Change the output relay between normally open and normally closed operation
  • Alarm output status can be retained even if the power supply is turned OFF

Voltage Monitor

ImageManufacturer Part NumberDescriptionAvailable QuantityView Details
K8AK-VS2 100-240VAC datasheet linkVOLTAGE RELAY 1 TO 150 VK8AK-VS2 100-240VACVOLTAGE RELAY 1 TO 150 V14 - Immediate
165 - Factory Stock
K8AK-VS2 100-240VAC product page link
K8AK-VS2 24VAC/DC datasheet linkVOLTAGE RELAY 1 TO 150 VK8AK-VS2 24VAC/DCVOLTAGE RELAY 1 TO 150 V3 - Immediate
K8AK-VS2 24VAC/DC product page link
K8AK-VS3 100-240VAC datasheet linkVOLTAGE RELAY 20 TO 600 VK8AK-VS3 100-240VACVOLTAGE RELAY 20 TO 600 V3 - Immediate
6 - Factory Stock
K8AK-VS3 100-240VAC product page link
K8AK-VS3 24VAC/DC datasheet linkVOLTAGE RELAY 20 TO 600 VK8AK-VS3 24VAC/DCVOLTAGE RELAY 20 TO 600 V22 - Immediate
K8AK-VS3 24VAC/DC product page link
K8AK-VW2 100-240VAC datasheet linkUNDR/OVR VOLT RELAY 1 TO 150 VK8AK-VW2 100-240VACUNDR/OVR VOLT RELAY 1 TO 150 V22 - Immediate
K8AK-VW2 100-240VAC product page link
K8AK-VW2 24VAC/DC datasheet linkUNDR/OVR VOLT RELAY 1 TO 150 VK8AK-VW2 24VAC/DCUNDR/OVR VOLT RELAY 1 TO 150 V37 - Immediate
K8AK-VW2 24VAC/DC product page link
K8AK-VW3 100-240VAC datasheet linkUNDROVR VOLT RELAY 20 TO 600 VK8AK-VW3 100-240VACUNDROVR VOLT RELAY 20 TO 600 V16 - Immediate
3 - Factory Stock
K8AK-VW3 100-240VAC product page link
K8AK-VW3 24VAC/DC datasheet linkUNDROVR VOLT RELAY 20 TO 600 VK8AK-VW3 24VAC/DCUNDROVR VOLT RELAY 20 TO 600 V10 - Immediate
K8AK-VW3 24VAC/DC product page link

Current Monitor

ImageManufacturer Part NumberDescriptionAvailable QuantityView Details
K8AK-AS1 100-240VAC datasheet linkCURRENT RELAY 2 TO 500MAK8AK-AS1 100-240VACCURRENT RELAY 2 TO 500MA2 - Immediate
25 - Factory Stock
K8AK-AS1 100-240VAC product page link
K8AK-AS1 24VAC/DC datasheet linkCURRENT RELAY 2 TO 500MAK8AK-AS1 24VAC/DCCURRENT RELAY 2 TO 500MA6 - Immediate
K8AK-AS1 24VAC/DC product page link
K8AK-AS2 100-240VAC datasheet linkCURRENT RELAY 0.1 TO 8 AK8AK-AS2 100-240VACCURRENT RELAY 0.1 TO 8 A6 - Immediate
K8AK-AS2 100-240VAC product page link
K8AK-AS2 24VAC/DC datasheet linkCURRENT RELAY 0.1 TO 8 AK8AK-AS2 24VAC/DCCURRENT RELAY 0.1 TO 8 A15 - Immediate
72 - Factory Stock
K8AK-AS2 24VAC/DC product page link
K8AK-AS3 100-240VAC datasheet linkCURRENT RELAY 10 TO 200 AK8AK-AS3 100-240VACCURRENT RELAY 10 TO 200 A1 - Immediate
63 - Factory Stock
K8AK-AS3 100-240VAC product page link
K8AK-AS3 24VAC/DC datasheet linkCURRENT RELAY 10 TO 200 AK8AK-AS3 24VAC/DCCURRENT RELAY 10 TO 200 A4 - Immediate
32 - Factory Stock
K8AK-AS3 24VAC/DC product page link
K8AK-AW1 100-240VAC datasheet linkOVR/UNDR RELAY 2 TO 500 MAK8AK-AW1 100-240VACOVR/UNDR RELAY 2 TO 500 MA7 - Immediate
8 - Factory Stock
K8AK-AW1 100-240VAC product page link
K8AK-AW1 24VAC/DC datasheet linkOVR/UNDR RELAY 2 TO 500 MAK8AK-AW1 24VAC/DCOVR/UNDR RELAY 2 TO 500 MA19 - Immediate
7 - Factory Stock
K8AK-AW1 24VAC/DC product page link
K8AK-AW2 100-240VAC datasheet linkOVR/UNDR RELAY 0.1 TO 5 AK8AK-AW2 100-240VACOVR/UNDR RELAY 0.1 TO 5 A92 - Factory StockK8AK-AW2 100-240VAC product page link
K8AK-AW2 24VAC/DC datasheet linkOVR/UNDR RELAY 0.1 TO 5 AK8AK-AW2 24VAC/DCOVR/UNDR RELAY 0.1 TO 5 A6 - Immediate
42 - Factory Stock
K8AK-AW2 24VAC/DC product page link
K8AK-AW3 100-240VAC datasheet linkOVR/UNDR RELAY 10 TO 200 AK8AK-AW3 100-240VACOVR/UNDR RELAY 10 TO 200 A2 - Immediate
26 - Factory Stock
K8AK-AW3 100-240VAC product page link
K8AK-AW3 24VAC/DC datasheet linkOVR/UNDR RELAY 10 TO 200 AK8AK-AW3 24VAC/DCOVR/UNDR RELAY 10 TO 200 A3 - Immediate
78 - Factory Stock
K8AK-AW3 24VAC/DC product page link

Temperature Monitor

ImageManufacturer Part NumberDescriptionAvailable QuantityView Details
K8AK-TH11S 100-240VAC datasheet linkTEMP MONITORING RELAY TC/RTDK8AK-TH11S 100-240VACTEMP MONITORING RELAY TC/RTD6 - Immediate
78 - Factory Stock
K8AK-TH11S 100-240VAC product page link
K8AK-TH11S 24VAC/DC datasheet linkTEMP MONITORING RELAY TC/RTDK8AK-TH11S 24VAC/DCTEMP MONITORING RELAY TC/RTD115 - Immediate
87 - Factory Stock
K8AK-TH11S 24VAC/DC product page link
K8AK-TH12S 100-240VAC datasheet linkTEMP MONITORING RELAY TCK8AK-TH12S 100-240VACTEMP MONITORING RELAY TC14 - Immediate
44 - Factory Stock
K8AK-TH12S 100-240VAC product page link
K8AK-TH12S 24VAC/DC datasheet linkTEMP MONITORING RELAY TCK8AK-TH12S 24VAC/DCTEMP MONITORING RELAY TC8 - Immediate
10 - Factory Stock
K8AK-TH12S 24VAC/DC product page link
Published: 2016-03-18