2
Section 1 – Introduction
1.0
Basic Description and Application
GE’s BreakMaster Load Interrupter Switch consists of an air insulated, three pole, gang-operated, quick-make,
quick-break, load interrupter switch in a floor mounted metal enclosure. It can be applied with power fuses and
many other protective devices to provide safe, economical switching and circuit protection where infrequent
disconnecting means is required. The BreakMaster is designed for medium voltage circuit applications ranging
from 2.4kV through 15kV in 600 or 1200 load ampere interrupting ratings. The switch is operated externally
from the front of the cubicle and is equipped with a quick make, quick break mechanism to open and close the
switch independent of the speed with which the operating handle is moved, manually or power operated. The
switchgear meets or exceeds all applicable ANSI, NEMA and IEEE standards and the Seismic requirements of the
UBC zone 4 and CBC zone 4 building codes and UL listed switches are available as an option.
1.1
Switchgear Identification
A data nameplate is located beneath the switch operating handle of each BreakMaster vertical switch section
(see Figure 1). Contained on this nameplate are the GE order number, serial number, drawing number, and switch
style number. This information should be given to the GE sales office if a question should arise concerning the
switchgear or if renewal parts are required. These numbers allow the factory to completely identify the
switchgear. Also located on the nameplate are voltage and current ratings for the switch and switchgear.
1.2
Safety Features
GE’s BreakMaster Load Interrupter Switch meets or exceeds all of the following standards:
GE’s BreakMaster Load Interrupter Switch has several built in
features to reduce hazards and to provide proper operating
sequences.
1. Door interlock prevents opening the enclosure front doors
while the switch is in the closed position.
2. Switch interlock prevents manual operation of the handle
mechanism with the doors open.
3. A viewing window is provided to verify each switch contact
position.
4. Facilities are provided for padlocking the switch in the open
or closed position.
5. Mechanical indicators show whether the switch mechanism
is open or closed.
6. Key interlocks, when provided, force a sequence of operation.
WARNING
Exceeding nameplate ratings of the
switchgear could cause property damage,
severe injury, or death. Switchgear must
be operated within its nameplate ratings.
!
BREAKMASTER LOAD
INTERRUPTER SWITCH
REQ. NO.
FACTORY ORDER NO.
SWITCH PART NO.
MANUFACTURE DATE
190B9965P1
ASSEMBLED IN MEXICO
XXXXXXX
XXXXXXXX
XXXXX-X
28-JUN-00
FUSE/RATING
FUSE CATALOG NO.
INTEGRATED SWITCH & FUSE
SHORT CIRCUIT CURRENT
175
9F62FDD175
40
KA ASYM
MAIN BUS AMPACITY
MAIN BUS BRACING
ENCLOSURE TYPE
N/A
50
INDOOR
A
KA ASYM
CATEGORY B
RATED MAXIMUM VOLTAGE
IMPULSE WITHSTAND (BIL)
NORM. FREQ. WITHSTAND
FREQUENCY
CONTINUOUS CURRENT
LOAD INTERRUPTING CURRENT
MOMENTARY CURRENT
SHORT TIME – CURRENT
– TIME
FAULT CLOSING CURRENT
15
95
36
60
600
600
40
25
2
40
KV
KV
KV
HZ
A SYM
A SYM
KA ASYM
KA SYM
SEC
KA ASYM
imagination at work
Standards
C37.20.3
ANSI/IEEE
C37.20.4
C37.22
NEMA
SG-6
UL
UL 1008A (LIS-ATS only)
See ANSI standards
CSA
C22.2, No. 31
C22.2, No. 193
IEEE
693-1997
BreakMaster Load Interrupter Switch
Figure 1
