2
Instruction Leaflet
IL012348EN
Effective August 2020
Instructions for LFD Current Limiter for Series C F-Frame and PD Frame 2.
ELC Current Limiter for Series C F-Frame and PD Frame 2 MCPs.
EATON
www.eaton.com
WARNING
DO NOT ATTEMPT TO INSTALL OR PERFORM MAINTENANCE ON
EQUIPMENT WHILE IT IS ENERGIZED. DEATH, SEVERE PERSONAL INJURY,
OR SUBSTANTIAL PROPERTY DAMAGE CAN RESULT FROM CONTACT WITH
ENERGIZED EQUIPMENT. ALWAYS VERIFY THAT NO VOLTAGE IS PRESENT
BEFORE PROCEEDING WITH THE TASK AND ALWAYS FOLLOW GENERALLY
ACCEPTED SAFETY PROCEDURES. EATON IS NOT LIABLE FOR THE
MISAPPLICATION OR MISINSTALLATION OF ITS PRODUCTS.
The User is cautioned to observe all recommendations,warnings, and
cautions relating to the safety of personnel and equipment as well as
all general and local health and safety laws, codes, and procedures.
The recommendations and information contained herein are based on
Eaton experience and judgment, but should not be considered to be
all-inclusive or covering every application or circumstance which may
arise. If any questions arise, contact Eaton for further information or
instructions.
Current limter circuit breaker or current limiter/MCP combinations are
designed for maximum protection and coordination, and should be
applied in accordance with the current limiter nameplate. For example,
the LFB3150R current limiter is for use only with thermal-magnetic
F-Frame or PD2, whereas the ELC3030R current limiter is only to
be used with the 30A MCP.
This noninterchangeability feature is made possible by combinations
of molded projections and grooves and by several sizes of pierced and
2 . INSTALLATION
1. INTRODUCTION
WARNING
IF REMOVING A CIRCUIT BREAKER INSTALLED IN AN ELECTRICAL SYSTEM,
MAKE SURE THERCIRCUIT BREAKERS IS SWITCHED TO THE OFF POSITION
AND THERE IS NO VOLTAGE PRESENT WHERE WORK IS TO BE PREFORMED.
SPECIAL ATTENTION SHOULD BE PAID TO REVERSE FEED APPLICATIONS.
THE VOLTAGES IN ENERGIZED EQUIPMENT CAN CAUSE DEATH OR SEVERS
PERSONAL INJURY.
threaded terminals. Standard terminals are provided with the current
limiter and are suitable for either copper or aluminum wire as shown
A circuit breaker that is mounted in an electrical system must be removed
to install the current limiter.
2-1. Remove terminals from load end of circuit breaker.
Note: During next step, molded projections of current limiter should
fit inside the molded grooves in the circuit breaker.
2-2. Position threaded terminals of current limiter under circuit breaker
terminals.
2-3. Secure current limiter to circuit breaker using the threee short screws
and lockwashers (Table 2-1) provided in the packing envelope. Torque load
screws (Table 2-1).
2-4. Secure current limiter to mounting panel using long #8-32 screws
provided in the packaging envelope.
2-5. Connect cables to current limiter. Table 1-1 shows available connector
types.
in Table 1-1.
For this publication, the term circuit breaker shall also include motor
Type ELC
Current Limiter
Max.Amps.
Terminal wire connectors areUL listed for standard wire sizes as
UL 486A or 486B
Optional on special order for copper cable only
Standard Aluminum
Terminals
Nonstandard Terminals
(Steel)
Wire Range
AWG (mm²)
50
100
150
#14-2
#1-410
#1-410
(2.5-35)
(50-95)
(50-95)
#14-2
²
(2.5-35)
Wire Range
AWG (mm²)
circuit protector.
Table 1-1 Current Limiter Terminals Wire Sizes
Table 2-1 Clamping Screw Torque Values and Usage.
Note : Before attempting to Install the current limiter, check that
the catalog number is correct and that the rating of the accessory
satisfies job requirements.
Current Limiter
Amperes
Clamping Screw
Torque value
lb-in
(N•m)
25-70
100-150 (also LFD3150R)
#12-24
1/4-20
20 to 40
60 to 80
(2.26 to 4.52)
(6.78 to 9.4)
1
²
Eaton assumes no responsiblity for malfunctioning accessories
installed by the customer.
A circuit breaker that is mounted in an electrical system must be removed
to install the current limiter.
