The PLR Series provides a cost effective means of preventing 3-phase motor startup during adverse voltage conditions. Proper A-B-C sequence must occur in order for the PLR’s output contacts to energize. In addition, the relay will not energize when an undervoltage or phase loss condition is present. The PLR protects a motor against undervoltage operation. The adjustment knob sets the undervoltage trip point. OperationThe output relay is energized and the LED glows when all voltages are acceptable and the phase sequence is correct. Undervoltage must be sensed for a continuous dropout delay period before the relay de-energizes. Reset is automatic upon correction of the fault condition. The output relay will not energize if a fault condition is sensed as power is applied.
Industrial Relays 3PHASELINEMONITOR
Voltage Sensing AC, Phase Loss, Phase Sequence 380 ~ 500VAC
| Littelfuse, Inc. | VAST STOCK CO., LIMITED | Quarktwin Technology Ltd. | |
|---|---|---|---|
| Product Category | Electromechanical Relays | Electromechanical Relays | Protective Relays and Monitoring Relays |
| Product Number | PLR480A | PLR480A | PLR480A |
| Product Name | PLR Series – Voltage Monitor | Industrial Relays | Monitor - Relay Output |
| Mounting | Socket or Plug-in Style; Plug-in socket rated 600V |
