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To ensure accuracy, please note that images may be representative. Refer to the product data sheet for detailed specifications.
| Manufacturer | SSAC / Littelfuse |
| Manufacturer Product Number | PLS480A |
| Description | Voltage Monitor Relay; Phase Rev Only; 440/480 VAC; SPDT, isolated; 8-Pin Plug-in |
| Datasheet | Download Datasheet |
The Littelfuse SSAC PLS480A is a 3-phase phase sequence relay for 440/480 V AC motors. It protects against phase reversal only (output closes on the correct phase sequence). Sensing: 3-phase delta or wye, no neutral connection.
Reset: Automatic. Diagnostics: LED on when the phase sequence is correct (relay energized).
Output: 1 Form C (SPDT), isolated, 8 A resistive @ 240 VAC; 250 VAC max. Mounting: Socket rated 600 VAC (OT08PC), DIN rail or surface, 8-pin octal plug-in. Dimensions: 81.3 x 60.7 x 45.2 mm (3.2 x 2.39 x 1.78 in), H x W x D.
It operates from -40 to +55 °C and can be stored from -40 to +85 °C.
| Category | |
| Manufacturer | SSAC / Littelfuse |
| Model | PLS |
| Monitoring Function | Phase reversal only (output closes on the correct phase sequence) |
| Sensing Method | 3-phase delta or wye, no neutral connection |
| Input Voltage | 440/480 VAC |
| Input Operating Range | 380-500 VAC, 50/60 Hz |
| Pickup Delay | 300 ms max (pull-in); 50 ms max drop-out |
| Reset Method | Automatic |
| Status Indicator | LED on when the phase sequence is correct (relay energized) |
| Contact Configuration | 1 Form C (SPDT), isolated |
| Output Rating | 8 A resistive @ 240 VAC; 250 VAC max |
| Mounting Type | Socket rated 600 VAC (OT08PC), DIN rail or surface |
| Termination Style | 8-pin octal plug-in |
| Dimensions | 81.3 x 60.7 x 45.2 mm (3.2 x 2.39 x 1.78 in), H x W x D |
| Operating Temperature (Storage) | -40...+55 °C (-40...+85 °C) |