Manual resetting and automatically resetting supported by one relay
Pre-alarm monitoring mode
Compact housings
Resistant to high-frequency noise
Compliance with global power and safety standards

The Omron K8AK series monitoring relays are expertly designed for accurate and reliable monitoring of industrial facilities and equipment. The K8AK-VW/VS relays are ideal for monitoring overvoltages and undervoltages, which the K8AK-VW can do simultaneously.

• Monitors over and under voltages simultaneously.
• Separate settings and outputs supported for over and under voltages.
• Manual reset and auto resetting supported by 1 relay.
• Pre-alarm monitoring mode.
• Two SPDT output relay. 5 A at 250 V ac (resistive load)
• LED output status indicator.
• Process control signal (0 to 10 V) current splitter input supported.
• Input frequency 40 Hz to 500 Hz
• Inputs isolated from the power supply

• Monitoring Relay.
• Power supply 100 V ac to 240 V ac.
• Setting range 1 to 10 V ac/dc, 3 to 30 V ac/dc, 15 to 150 V ac/dc.

• Power supply (isolated) 24 V ac/dc, 100 to 240 V ac.
• Manual/ Automatic reset (switchable)
• Manual reset – Turn OFF the power supply for minimum of 1 sec.
• Power on lock time 1 s or 5 s (using DIP switch)
• Green LED Power (PWR)
• Yellow LED Relay output (RY)
• Red LED Relay output (ALM)
• Two SPDT relays normally closed (NC)
• DIN Rail Mounted
• Weight 150 g
• Case material PC and ABS, UL 94 V-0
• Colour N1.5
• Protection IP20 (terminals)

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.

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

UL 60947-5-1, UL 508, IP 20