K8AK-PW2 – Omron K8AK Three-Phase Voltage Relay, Over/Undervoltage Monitoring, In Stock
Buy the Omron K8AK-PW2, a three-phase voltage monitoring relay, 22.5mm width, over and undervoltage detection, switchable 3-wire (380/400/415/480 VAC) or 4-wire (220/230/240/277 VAC) modes, two SPDT outputs. In stock and available for fast shipping. Get a quote today.
Key Technical Specifications
- Product Type: Three-phase voltage relay, K8AK-PW Series
- Housing Width: 22.5 mm
- Monitoring Function: Overvoltage and undervoltage, in one unit
- 3-Wire Mode Voltages: 380, 400, 415, 480 VAC
- 4-Wire Mode Voltages: 220, 230, 240, 277 VAC
- Mode Selection: DIP switch (pin 2) for 3-wire or 4-wire operation
- Output Contacts: 2 SPDT relays
- Operating Time (T): Adjustable 0.1 to 30 s
- Power ON Lock Function: Prevents unnecessary alarms during unstable power-up period
- Indicators: Power/operation LED, overvoltage LED, undervoltage LED
- Terminal Wiring: Solid wire up to 2.5 mm² or ferrule
- Reset Method: Manual or automatic
Design and Performance
Single Unit Monitors Three-Phase Power Worldwide
A single K8AK-PW2 can monitor a three-phase power supply from virtually anywhere in the world by simply changing DIP switch settings for 3-wire or 4-wire mode and rated voltage, reducing the need to stock multiple region-specific relay models.
Comprehensive Overvoltage and Undervoltage Detection
The K8AK monitors each of the three-phase voltages individually, detecting overvoltage or undervoltage conditions on any phase and triggering the appropriate alarm output, protecting connected motors and equipment from voltage-related damage.
Power-On Lock Prevents Nuisance Alarms
A built-in power-on lock function prevents unnecessary alarms from being generated during the unstable period immediately after power is first turned on, avoiding false trips during normal startup transients.
Flexible Manual or Automatic Reset
Manual and automatic resetting are both supported by a single relay, letting engineers choose the response behavior that best fits their application — automatic recovery once voltage stabilizes, or manual confirmation before restart.
Clear, Distinct Fault Indication
Separate overvoltage and undervoltage LED indicators flash during the fault period and remain lit afterward, giving maintenance personnel immediate, unambiguous visibility into which specific condition triggered the alarm.
Why Buy the K8AK-PW2 From Us
- In stock and ready for immediate dispatch
- Fast shipping on every order
- Commercial advisory support to help you confirm the right K8AK-PW voltage mode configuration for your power supply
- Competitive pricing — get a quote in minutes
