Relay Outputs in a Slim 22.5-mm Design
Provides individual over/under
voltage settings and outputs (1-/3-phase Power Supply)
Many customers require the individual upper and lower limit outputs that
are normally available only in larger 45-mm relays. OMRON has achieved
this and more in a slim-body design measuring just 22.5 mm.
These relays not only offer advantages such as 3-phase power supply
compatibility and a resistive load contact capacity of 6 A at 250 VAC, but
its compact size also reduces panel cost.
3-/4-wire Selection for 3-phase Power Supply Using a Single K8AB
OMRON Low-voltage Monitoring Relays can be
used to monitor 3-phase power supplies with 3 or 4 wires simply by
changing DIP switch settings.
Pre-alarm Monitoring Mode Provides Advanced Warning
In non-stop production sites or plants, unexpected
shutdowns must be kept to an absolute minimum. OMRON addresses this with
the K8AB-VW featuring a two-level pre-alarm monitoring mode with
individual trip outputs and pre-alarm warning settings (H/HH alarm and
The K8AB-VW makes scheduled maintenance viable because the pre-alarm
monitoring mode provides advanced warning of impending trip alarms.
The highly restrictive voltage settings that
posed such a problem in the past are no longer a concern. OMRON's Relays offer full-span over voltage and under voltage range settings for
unprecedented voltage monitoring flexibility.
DIP Switch Function Selection
Various relay functions can be selected using a DIP switch. The number of models required can be reduced to 1/8,
reducing the inventory of maintenance parts.
Flashing Alarm Indicator
Checking the operating status has never been
convenient because of the time it takes to reach the preset operation
time. The K8AB eliminates this problem by featuring a flashing alarm
indicator that clearly indicates the operating status. This has greatly
simplified the task of checking on-site status particularly when operation
settings are changed or an error occurs.
Note: Excluding the K8AB-PH and K8AB-TH.
Simple Sensor Controller
K8AB Series accepts inputs of 4 to 20 mA or 0 to 10 V, thus can be used as
a simple Sensor Controller.
Compatible with Commercial CTs
The K8AB-AS Single-Phase Current Relay can be used with commercial CTs for
CT current on secondary
0 to 1 A AC
0 to 5 A AC
Note: Omron-compatible CT: K8AC-CT200L, only
the K8AB-AS3 can be used for AC operation at both 100 and 200 A.