GE AKR-75 Series - Introduction

GEI-861518
INTRODUCTION
These
instructions describe
the
installation
and
operation of
the
AKR-75 and
AKR-100
frame size
Low Voltage Power
Circuit
Breakers.
They cover a
variety of
models
which
may differ
in rating, trip device
andlor
mounting
type as
indicated
in Table
1.
250V.
Dc
(-)
This
digit
identifies
the
trip device type
as
follows:
2
:
EC-'tB
(DC
onty)
4=EcS).--
s
:
Sdi
|
(50/60
Hertz
only)
N
:
Non--automatic.
ln
addition, all non-automatic
250 VDc
breaker
types
carry the
suffix letter D
after their frame
number,
e.9., AKR-NB-7SD.
EC-18
trip
devices are the
electro-mechanical
type. ECS
and
SST units are
Solid State. For
detailed information
on these
trio
devices refer
to the following
publications:
ECS,
SST---
--------
cEt-86156
EC-1B--------
--------
cEt-86157
3
TABLE
1
BREAKER
MODELS
SPECIAL
DC BREAKERS
FOR FIELD SWITCHING