PMD Series

DIN-Rail Mounting or Panel Mounted

Protects against phase loss, phase reversal, phase unbalance, undervoltage and overvoltage

Universal voltage range of 190-500V AC

Overview
Operation
Knowledge Base

Features	Universal voltage range of 190-500V AC on PMDU provides the flexibility to cover a variety of applications with one unit (separate 575V-only version available) Protects against phase loss, phase reversal, phase unbalance, undervoltage and overvoltage True RMS voltage measurement ensures accurate sensing across more applications Retains fault indication and continues monitoring all voltages even with a lost phase Manual reset option works with external switch to reset the relay from the ouside of enclosure Full fault indication on top of unit for easy troubleshooting Pilot Duty Rating
Enclosure Style	Mounts on 35mm DIN rail or panel mounted
Configuration/ Contact Rating	DPDT 10A @ 277V AC/30V DC; 1/2HP @ 120/240V AC (N.O.), 1/3HP @ 120/240V AC (N.C.)
Approvals	UL File #E109466
Technical Documentation	Catalog Pages Instruction Sheet

Operation:

When the proper 3-phase line voltage is applied to the unit and the phase sequence (rotation) is correct, the relay is energized after the Restart Delay is completed. Any one of five fault conditions will de-energize the relay after a delay. As standard, re-energization is automatic upon correction of the fault condition. Manual reset is available if an external momentary N.C. switch is connected to terminals 4 and 5. A bi-color status LED indicates normal condition and also provides specific fault indication to simplify troubleshooting (see right).

Macromatic's Three-Phase Monitor Relays Knowledge Base contains general and technical industry articles to help you learn more about Three-Phase Monitor Relays.

Protects against phase loss, phase reversal, phase unbalance, undervoltage and overvoltage

Universal voltage range of 190-500V AC