Volume 5—Motor Control and Protection CA08100006E—February 2014 www.eaton.com V5-T1-157
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IEC Contactors and Starters
XT
IEC Power Control
Contents
Description Page
Relays and Timers . . . . . . . . . . . . . . . . . . . . . . . . . V5-T1-3
Miniature Controls . . . . . . . . . . . . . . . . . . . . . . . . . V5-T1-18
Contactors and Starters . . . . . . . . . . . . . . . . . . . . V5-T1-35
Thermal Overload Relays . . . . . . . . . . . . . . . . . . . . V5-T1-128
C440/XT Electronic Overload Relay . . . . . . . . . . . V5-T1-141
Manual Motor Protectors
Features and Benefits . . . . . . . . . . . . . . . . . . . V5-T1-158
Standards and Certifications . . . . . . . . . . . . . . V5-T1-158
Product Identification . . . . . . . . . . . . . . . . . . . . V5-T1-159
Catalog Number Selection . . . . . . . . . . . . . . . . V5-T1-160
Product Selection . . . . . . . . . . . . . . . . . . . . . . . V5-T1-161
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . V5-T1-164
Technical Data and Specifications . . . . . . . . . . V5-T1-176
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . V5-T1-185
Combination Motor Controllers . . . . . . . . . . . . . . . V5-T1-193
XT Electronic Manual Motor Protector . . . . . . . . . V5-T1-216
Reference Data . . . . . . . . . . . . . . . . . . . . . . . . . . . V5-T1-229
Manual Motor Protectors
Product Description
Eaton’s new XT family of
manual motor protectors
(MMPs) features a
pushbutton or rotary ON/OFF
manual disconnect, Class 10
adjustable bimetallic overload
relay and fixed magnetic
short-circuit trip capability
in one compact unit. Two
frame sizes are available:
Frame B (45 mm) for motors
with FLA ratings up to 32A
and Frame D (55 mm) covers
motor FLA ratings up to 65A.
Application Description
The XTPB and XTPR MMPs
can be used in the following
applications.
Motor Protective Circuit Breaker
In many countries outside
of the United States and
Canada, especially Europe,
the MMPs are tested and
classified as thermal-
magnetic circuit breakers
for use in motor branch
circuits. This can be an
important consideration for all
companies who export their
equipment and machines
internationally. Both the XTPB
and XTPR conform to IEC/EN
60947 and have the CE Mark.
Manual Motor Protectors
The XTPB and XTPR MMPs
are UL listed under UL 508 as
manual motor protectors. They
provide an economical solution
for applications requiring
simple manual starting and
stopping of motors. When
used as a manual starter, they
are typically installed in an
enclosure. Many enclosures
are offered as accessories for
the MMPs. Separate short-
circuit protective devices, such
as circuit breakers or fuses, are
wired ahead of the MMPs. The
short-circuit protective device
should be sized per the NEC
and should not exceed 400%
of the maximum FLA dial
setting of the MMP.
Group Motor Installations
A group motor installation
can be defined as more than
one motor circuit protected
by a single set of fuses or
circuit breaker on a motor
branch circuit. This eliminates
the need for individual fuses
or circuit breakers for each
motor circuit. Substantial
component cost savings,
panel space savings and
reduced wiring installation
time can be achieved in
group motor installations.
The MMPs are tested and
listed for group installation
.
If remote operation is required,
a magnetic contactor can be
wired in series with the MMP.
Article 430.53 of the NEC
contains the rules and
requirements for group motor
installations.
Refer to
application note AP03402001E
for NEC requirement for
group motor installation.
Individual Branch Motor
Applications
A UL 508 Type E self-
protected manual
combination starter/motor
controller consists of a single
device possessing four
essential elements:
disconnect, short circuit
protection, motor controller,
and motor overload
protection. Some MMPs
require use of a lineside
adapter for this type of
approval. When tested as an
official combination by UL,
this device takes the place of
a fuse-starter or breaker-
starter, XT Type E MMPs are
self-protected, meaning they
do not need additional short
circuit protection of a fuse or
breaker. Type E devices can
also be used with a contactor
or other types of UL approved
controllers. If tested with a
contactor, the combination
motor controller becomes a
Type F device. See Page
V5-T1-199 for XTFC Type F
devices.