Littelfuse PLS240A, PLS Series, Phase Sequence 208 ~ 240VAC, SPDT (1 Form C), Octal 8-pin plug-in Termination
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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.
Operation
The 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.
*CAUTION: Select an octal socket rated for 600VAC operation.
| Line Voltage | |
| Type | 3-phase delta or wye with no connection to neutral |
|
Nominal Minimum Maximum Voltage Voltage Voltage 120VAC 95VAC 135VAC 208/240VAC 175VAC 255VAC 380/415VAC 310VAC 430VAC 440/480VAC 380VAC 500VAC |
|
| AC Line Frequency | 50/60Hz |
| Phase Sequence | ABC |
| Response Times | |
| Pull-in | ≤ 300ms |
| Drop-out | ≤ 50ms |
| Output | |
| Type | Electromechanical relay, energized when the phase sequence is correct |
| Form | Isolated SPDT |
| Rating |
120 & 240VAC 10A resistive @ 240VAC 380 & 480VAC 8A resistive @ 240VAC |
| Maximum Voltage | 250VAC |
| Protection | |
| Isolation Voltage |
120 & 240VAC ≥ 1500V RMS input to output 380 & 480VAC ≥ 2500V RMS input to output |
| Mechanical | |
| Mounting* | Plug-in socket |
| Dimensions |
H 81.3 mm (3.2”) W 60.7 mm (2.39”) D 45.2 mm (1.78”) |
| Termination | Octal 8-pin, plug-in |
| Environmental | |
| Operating/Storage Temperature | -40°to 55°C / -40° to 85°C |
| Weight | ≅ 6 oz (170 g) |