Product Overview

© 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