Home » Littelfuse PLS120A, PLS Series, Phase Sequence 120VAC, SPDT (1 Form C), Octal 8-pin plug-in Termination
Littelfuse

Littelfuse PLS120A, PLS Series, Phase Sequence 120VAC, SPDT (1 Form C), Octal 8-pin plug-in Termination

In stock
SKU: PLS120A
$187.13
Rated voltage
Contact code

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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.

Pre-order 6-8 Weeks

*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)