Page 24
TYPE
BR
For more information contact Cutler-Hammer at: www.ch.cutler-hammer.com/catalog
CIRCUIT
BREAKERS
BR Circuit Breakers
Cutler-Hammer Type BR plug-on
breakers in the standard 1-inch
(25.4 mm) per pole package have
unique color-coded cases that indicate
UL listed 10 kA or 22 kA interrupting
ratings and can be used as main or
branch disconnect devices. All are type
I.C. (interchangeable) devices; several
ratings are SWD and HACR approved.
Typical ampacity range for BR
breakers is 15 to 150 amperes.
GFCB® People Protection Breakers
Cutler-Hammer Type GFCBs (ground
fault circuit breakers) combine state-of-
the-art electronic technology with a
circuit breaker mechanism in a
compact 1-inch (25.4 mm) per pole
package. The GFCB automatically
senses hot wire-to-ground faults in a
4 to 6 mA range and disconnects the
power, thus providing an extra margin
of safety beyond that of conventional
circuit breakers. GFCB applications
include bathrooms, cellar outlets,
swimming pools, outdoor branch
circuits and kitchen branch circuits.
Available in UL listed 120 and 120/240V
ratings. Cutler-Hammer also offers
non-UL listed GFCBs for international
applications as well as ground fault
devices for equipment protection.
GFEP Equipment Protection
Breakers
The Cutler-Hammer Type GFEP device is
similar to the GFCB, except that it is
designed to protect equipment (not
people) against damage from arcing
ground faults. It is available with a 30 mA
trip level. Applications include infrared
heating equipment, computer equip-
ment, process control equipment, etc.
BJ Circuit Breakers
Available in 125 through 200 ampere
frames, Cutler-Hammer Type BJ plug-
on breakers have 10 kA and 22 kA
interrupting ratings that can be used
as main or branch disconnect devices.
Large extruded aluminum box lugs,
complies with UL486B, provide cool
operation. Tripping mechanism has
thermal and magnetic protection for
long-life performance. Rupture gas is
safely vented into box gutter.
BD Circuit Breakers
BD plug-on breakers have the same
construction as Cutler-Hammer Type BR
1-inch (25.4 mm) per pole devices
except that two poles are in a space-
saving 1-inch (25.4 mm) package.
UL listed interrupting rating is 10 kA.
Some ratings are SWD and HACR
approved. Exclusive CTL rejection
feature allows only 42 circuits in the
panel in compliance with NEC Article
384-15.
BQ Circuit Breakers
Quadplex® construction of Cutler-
Hammer Type BQ plug-on breakers
incorporates two duplex breakers
assembled together to provide various
combinations of 2-pole and single-pole
devices in a 2-inch (50.8 mm) package,
and allows compliance with NEC Article
240-20(b). The 2-pole combinations of
Cutler-Hammer Type BQ breakers are
marked “independent trip” meaning
that each pole of a 2-pole device trips
independently of the other, but may be
actuated jointly by means of the handle
tie. Independent trip devices may only
be used on 3-wire Edison circuits where
the neutral is present.
BQC Circuit Breakers
Quadplex construction of Cutler-
Hammer Type BQC plug-on breakers
incorporates a special internal
common trip cam. BQC breakers are
available in several combinations of
2-pole and single-pole devices
wherein the 2-pole circuits have an
internal common trip mechanism.
These breakers are labeled “common
trip” and meet all the requirements of
UL489 paragraph 9.1 requiring
multipole breakers to have common
trip. Common trip breakers are
required on all 240V circuits where
there is no neutral present such as
water heaters, baseboard heat, air
conditioners and other motorloads.
Special Application Breakers
As the name implies, these devices are
designed for special applications as
required by the National Electrical Code®.
Water Heater Breaker
Some watthour meters incorporate
rate register switches used in conjunc-
tion with off-peak rates. Water heater
breakers do not derive their circuit
from the loadcenter stab. The line and
load side of the breaker are fed to
terminals on the breaker. Except for
these terminations, the device offers
normal circuit breaker protection.
Switching Neutral Breaker
Primary application for the Cutler-
Hammer switching neutral breaker is
for protection of process equipment
such as gas pumps that utilize flam-
mable liquids. Non-automatic pole
breaks the neutral power leg, minimiz-
ing the danger of arc conditions.
2-Pole Breakers 120V or More-to-Ground
Used on Delta distribution systems,
these Type BR breakers are applied on
phase legs where voltage-to-ground is
above 120V.
Non-Automatic Molded Case Switch
Identical to comparable circuit breaker
frames with this exception: non-
automatic molded case switches do not
have thermal or magnetic elements.
Arc Fault Circuit Interrupters (AFCIs)
Reduce the risk of fire by detecting
and interrupting electrical arcing faults
which standard thermal magnetic
breakers cannot. For more informa-
tion, see page 27.
Heavy-duty mechanism
spring for reliable
operation.
Hardened cradle for
positive action under
fault conditions.
Non-abrasive integrally
molded pivot for quick
mechanism response.
One-piece moving
contact arm for quick
on/off response.
Heavy-duty line terminal
and spring clip for quick
load center installation
and cool operation.
Silver tungsten alloy
contacts.
Provision for
handle tie.
Unique one-piece heavy-duty De-ion
assembly for quick arc interruption.
Black Molded Handle.
Callibrated one-
piece bimetal for
reliable thermal
trip function.
One-piece frame
assembly for
dimensional stability
and reliable operation.
Four-rivet construction
enhances strength and
structural integrity of
breaker case.
Common trip cam
assures simultaneous
pole opening.
Heavy-duty multi-strand
flexible copper shunt for
cool operation.
UL 486B approved terminal
assembly for use with
copper or aluminum wire.
Large gas port for venting
short circuit gases safely
into load center gutter.
One-piece molded
case construction.
Full width slot for
channel type lead
center hold-downs.
BR Breaker Section View