Eaton Cutter-Hammer SPB-50 User Manual

I
.
B
.
29
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801
C
Page
19
Figure
5
-
10
Undervoltage
Release
Installed
Figure
5
-
9
Undervoltage
Release
Kit
for
both
fixed
mounted
and
drawout
breakers
(
Figures
5
-
11
and
5
-
12
)
.
For
fixed
breakers
the
assembly
is
bolt
-
ed
to
the
right
-
hand
side
of
the
breaker
.
For
drawout
breakers
behind
the
door
,
the
assembly
is
mounted
to
the
right
-
hand
side
of
the
drawout
stationary
racking
mechanism
.
With
either
arrangement
,
the
charging
and
closing
of
the
breaker
is
blocked
.
With
the
lock
in
the
“
BOLT
EXTENDED
”
position
,
the
breaker
may
be
racked
to
the
“
WITHDRAWN
”
position
.
For
through
the
door
drawout
breakers
the
assembly
is
mounted
below
the
cassette
in
the
switchgear
.
5
-
7
UNDERVOLTAGE
RELEASE
TIME
DELAY
DEVICE
An
undervoltage
release
time
delay
device
used
in
con
-
junction
with
the
instantaneous
undervoltage
release
accessory
will
provide
the
necessary
time
delay
opera
-
tion
to
avoid
nuisance
breaker
openings
,
resulting
from
momentary
dips
in
the
monitored
AC
voltage
source
.
The
device
has
AC
voltage
taps
at
120
and
240
volts
with
time
delay
settings
of
.
1
,
.
3
and
.
5
seconds
at
120
volts
and
.
5
,
.
7
and
1.0
at
240
volts
.
It
must
be
applied
only
with
a
60
V
DC
instantaneous
undervoltage
release
.
Linkage
kits
are
available
for
field
mounting
on
the
dra
-
wout
stationary
racking
mechanism
.
Provisions
for
key
interlocks
must
be
factory
installed
on
fixed
mounted
breakers
.
The
device
is
available
in
a
surface
mounted
enclosure
for
remote
mounting
.
If
required
,
the
surface
unit
may
be
adapted
for
flush
mounting
with
the
addition
of
a
special
mounting
adapter
.
Ordinarily
,
the
actual
key
interlocks
are
ordered
sepa
-
rately
and
installed
by
the
customer
.
However
,
complete
lock
provisions
including
the
locks
may
be
installed
in
the
factory
to
satisfy
customer
requirements
.
5
-
8
KEY
INTERLOCKS
Locks
supplied
by
the
customer
should
be
Kirk
-
or
phys
-
ical
equivalent
-
Type
“
F
,
”
standard
3
/
8
inch
bolt
projec
-
tion
for
through
the
door
design
and
“
Zero
”
bolt
projec
-
tion
for
behind
the
door
and
fixed
designs
.
Key
interlock
mechanisms
provide
a
means
for
the
mechanical
sequencing
of
circuit
breakers
,
as
may
be
required
when
multiple
power
sources
are
available
for
a
common
load
.
Key
interlock
assemblies
are
available
E
;
T
'
N
Effective
7
/
00
Courtesy of NationalSwitchgear.com

Eaton Cutter-Hammer SPB-50 Specifications

General

Brand	Eaton
Model	Cutter-Hammer SPB-50
Category	Circuit breakers
Language	English