Three-phase network monitor, suitable for 3-phase networks or 3-phase networks with neutral (N). The DPB51CM44 monitor oversees:

• phase sequence,
• phase loss,
• overvoltage (from +2% to +22%),
• undervoltage (from -22% to -2%).

It features adjustable time delay in monitoring voltages. Its settings are easy, with front-facing potentiometers for overvoltage and undervoltage. A third potentiometer adjusts the relay activation time delay in case of overvoltage and undervoltage.

In the case of phase absence or incorrect phase sequence, it activates immediately without time delay for maximum safety. On the front of the monitor, there is a fourth control for selecting the nominal monitoring voltage, thereby turning the DPB51CM44 into a versatile monitor, adjustable for voltages from 177 to 550 V/AC.

Bridged terminals Z1-Z2: for a 3-phase network with neutral.

Non-bridged terminals Z1-Z2: for a 3-phase network without neutral.

The monitor's small size allows for installation even in domestic panels.

Technical specifications:

• Supply voltage: 208 - 480 V AC
• Voltage monitoring range: 177 - 550 V AC
• Time delay (in overvoltage and undervoltage): 0.1 - 30 sec
• Output relay: 5 A (1 x NO+NC)
• Indicators: 1 green LED for power indication, 1 yellow LED for relay activation indication, and 1 red LED for time delay indication
• Dimensions: 1- DIN (17.5 x 90 x 67.2 mm)