Under Voltage and neutral supervision module

The neutral conductor monitoring module (Part No. 584970) should be used to protect against a break in the neutral conductor occurring. This module is connected upstream with the MSU contactor (Part No. 584971) and enables the safe and immediate all-pole interruption of the power supply in the event of:

· undervoltage

· phase failure

· asymmetry, including for reverse voltage

· neutral conductor missing in the system

· neutral conductor break in the device supply cable

· neutral conductor mixed up with phase.

• Compliant to IEC/EN 60 255, DIN VDE 0435-303
• Single phase connection possible
• Fixed setting value
• Closed circuit operation principle
• LED indicator
• With safe disconnection compliant to IEC/EN 61 140, IEC/EN 60 947-1 between the Measuring Circuit and the contacts
• Independent of phase sequence
• 2 changeover contacts