© 2016 Littelfuse Protection Relays & Controls

www.littelfuse.com/

Rev: 1-A-062716

Protection Relays

Voltage Monitoring Relays

www.littelfuse.com/pls

PLS SERIES

Description

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.

Features & Benefits

FEATURES

BENEFITS

Continuous monitoring

Cost effective protection of 3-phase equipment and

operators from reverse rotation. Meets reverse

rotation protection code requirements.

Universal motor

compatibility

Designed to be compatible with motor overloads or

other 3-phase equipment protection devices

Industry standard 8-pin

octal plug connection

Eliminates need for special connectors

Factory calibrated

Easy to install. No field adjustment needed

LED indicator

Provides visual indication of relay status

Accessories

BZ1 Front Panel Mount Kit

Provides an easy method of through-the-panel

mounting of 8- or 11-pin plug-in timers, flashers,

and other controls.

Octal 8-pin Socket

8-pin 35mm DIN rail or surface mount. Rated at

10A @ 6 00VAC. Surface mounted with two #6

screws or snaps onto a 35 mm DIN rail.

LPSM003ZXID (Indicating),

LPSM003Z (Non-indicating) Fuse Holders

Littelfuse POWR-SAFE Dead Front holders

provide optimum protection to personnel for

Class CC and Midget-Style fuses. 600 VAC/DC

0KLK002.T Midget Fuse (2 Amp)

10 x 38 fast acting, high-interrupting capacity,

current-limiting type fuse. 600 Vac/500 Vdc

C103PM (AL) DIN Rail

35 mm aluminum DIN rail available in a 36 in.

(91.4 cm) length.

Ordering Information

MODEL

LINE VOLTAGE

PLS120A

120VAC

PLS240A

208/240VAC

PLS480A

440/480VAC

If you don’t find the part you need, call us for a custom product 800-843-8848

Wiring Diagram

F = Fuses

ØA = Phase A = L1

ØB = Phase B = L2

ØC = Phase C = L3

NO = Normally Open

NC = Normally Closed

Relay contacts are isolated

2A fast acting fuses recommended for

safety (not required).

8-PIN