The PLS480A is a 3-phase voltage monitoring relay for 440/480VAC systems, providing isolated SPDT relay output to prevent reverse phase rotation. It mounts in an octal 8-pin plug-in socket, measures 81.3 mm H × 60.7 mm W × 45.2 mm D, and weighs approximately 170 g. The relay operates within an input voltage range of 380VAC to 500VAC, with a phase sequence response time of ≤300ms pull-in and ≤50ms drop-out. Output rating is 8A resistive at 240VAC, with a maximum voltage of 250VAC. Isolation voltage is ≥2500V RMS input to output. Operating temperature ranges from -40°C to 55°C, with storage up to 85°C. The device includes an LED status indicator and requires no field adjustment.
The PLS Series is a low cost phase sensitive control that provides an isolated contact closure when the proper A-B-C phase sequence is applied. Protects sensitive 3-phase equipment and equipment operators from reverse rotation. Designed to be compatible with motor overloads or other 3-phase equipment protection devices. Protection for equipment control centers where frequent reconnection or electrical code makes reverse rotation protection essential. Examples include: mobile refrigerated containers, construction equipment, hoists, pumps, conveyors, elevators and escalators. OperationThe internal relay and LED are energized when the phase sequence is correct. The output relay will not energize if the phases are reversed. Reset is automatic upon correction of the fault.
Industrial Relays REVERSEPHASERELAY
Phase Sequence 440 ~ 480VAC
| Littelfuse, Inc. | VAST STOCK CO., LIMITED | Quarktwin Technology Ltd. | |
|---|---|---|---|
| Product Category | Electromechanical Relays | Electromechanical Relays | Protective Relays and Monitoring Relays |
| Product Number | PLS480A | PLS480A | PLS480A |
| Product Name | PLS Series – Voltage Monitor | Industrial Relays | Monitor - Relay Output |
| Mounting | Socket or Plug-in Style; Plug-in socket |
