Cut Sheet

V1-T1-72 Volume 1—Residential and Light Commercial CA08100002E—August 2015 www.eaton.com
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Loadcenters and Circuit Breakers
Type BR Loadcenters and Circuit Breakers
G. Branch circuit breakers
may also be used in
the 1/2-inch (12.7 mm)
per pole ratings that
include two-pole 1-inch
(25.4 mm) wide modules
and four-pole 2-inch
(50.8 mm) wide
modules. Two-pole circuit
breakers must
incorporate a common
trip mechanism. The
exclusive CTL rejection
tab feature shall be
provided to limit the
number of branch
devices for a loadcenter
to 42, in compliance with
NEC Article 384.15.
H. Circuit breakers shall
be completely enclosed
in a molded case of
thermoset material.
No internal aluminum
parts shall be used. All
internal ferrous parts
shall be plated to
prevent corrosion.
I. All terminals shall be
listed for use with copper
or aluminum conductors.
Terminals shall be of the
box lug or clamp type
design. The terminals
shall meet UL 486B
requirements and shall
be suitable for use with
either 60 °C or
75 °C wire.
J. The calibrated bimetal
assembly shall be
mechanically isolated
from the load terminal
using a flexible braided
copper shunt wire, such
that movement of the
terminals due to twisting
and overtorquing does
not affect breaker
calibration.
K. Breakers shall be SWD
rated and/or HACR rated
as required.
L. Arc Fault Interrupting
circuit breakers, (AFI),
shall be provided on all
15 and 20 A single-phase
120/240 Vac circuits
except those indicated as
remote controlled
breakers. AFI breakers
shall be “Classified for
mitigating the effects of
arcing faults,” or
conforming to UL
Standard 1699 and as
defined by Article 210.12
Section A of the 1999
NEC Code.
Surge Protection Devices
See Volume 1, Tab 2 for
complete details on
surge protection.
Enclosures
A. Loadcenter shall have
NEMA Type 1 general
purpose or NEMA Type
3R rainproof enclosures
as indicated on the
drawings and shall be
surface or combination
flush/surface mounted
except where noted.
B. Boxes shall be made
from galvanized sheet
steel having multiple
knockouts. Rainproof
boxes shall use
galvanized steel or
an approved coating
system which meets or
exceeds standards for
outdoor NEMA Type 3R
enclosures. Boxes shall
be of sufficient size to
provide at least a
minimum code gutter
space on all sides.
C. The deadfront shall
have an easy adjustment
feature for flush
applications.
D. Boxes shall be factory
assembled into a single
rigid structure.
E. Unless otherwise noted
on drawings, hinged
doors covering all circuit
breaker handles shall
be included in all trims.
Trim doors shall not
uncover any live parts
in making the circuit
brea
ker handles
accessible. If key locks
are required, all locks
shall be keyed alike.
F. Combination trims for
flush and surface panels
shall be flat and shall
overlap the box by at
least 5/8-inch (15.9 mm)
all around. Trims shall
be mounted by a
screwdriver without the
need for special tools.
Finish
A. Trims shall be bonderized
and finished with a light
gray ANSI-61 enamel.
The paint finish shall be
of a type to which field
applied paint will adhere.
Factory Testing
A. The standard factory
tests shall be performed
on the equipment
provided under this
section. All tests shall
be in accordance with
the latest version of UL
and NEMA.