Product Description
DWB02 and PWB02 are precise TRMS active power monitoring relays for 3-phase balanced systems. They can be used for monitoring the actual load of asynchronous motors and other symmetrical loads, as well as the power consumption by of system.
Start/stop input allows to use a manual switch to start and stop the system, without the need of an auxiliary device.
The advantage of using the latch function is that the alarm status can be kept even after the end of the alarm condition. Inhibit function can be used to avoid relay operation when not desired (maintenance, transitions).
The LEDs indicate the state of the alarm and the output relay.

• TRMS active power relays for three phase
   balanced applications
• Measuring if active power is within set limits
• Measuring voltage on own power supply
• Measuring ranges: 5A, 10A, MI current transformers
• Power ON delay 1 to 30 s knob selectable
• Separately adjustable upper/lower level on relative
   scale
• Programmable latching or inhibit at set level
• Automatic and manual start and stop of the system
• Output: 8 A SPDT relay N.D. or N.E. selectable
• For mounting on DIN-rail in accordance with DIN/EN
   50 022 (DWB02) or plug-in module (PWB02)
• 45 mm Euronorm housing (DWB02) or 36 mm plug-in
   module (PWB02)
• LED indication for relay, alarm and power supply ON