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8
Westinghouse
DESCRIPTION
1
Fig.
Complete Linestarter Assembly with Type GCA-530 Con
tactor, Type L-56 Electrical Interlock,
formers and Type A Thermal Overload Relay.
5
The Type GCA Size
AC Contactor is completely
assembled on an insulated base of molded glass-poly
ester. It is suitable for mounting on either steel or
insulating panels. Contactors are available in
pole front connected assemblies. A I inestarter assem
bly,
see
Fig. CD,
incorporates
current transformers and overload relay.
This unit is supplied with an AC operating magnet.
The operating coils are designed for continuous duty
85%
110%
to
of rated voltage.
from
ratings are listed in Fig.®.
Characteristics
Voltage Rating
8-hour rating, Amperes
2
Fig.
Ratings
-
TYPE GCA SIZE 5
AC CONTACTOR
2 OR 3 POLES
(Photo BD 70-0584)
Current Trans
2
or
integrally mounted
The contact
Open
Enclosed
600
600
300
270
FRONT CONNECTED
The main contacts are of the bridging or double break
type. Both moving and stationary contacts are faced
with a silver alloy, whose surfaces are kept clean by
a
rolling
and wiping action as the contacts seal.
Stainless steel compression springs in each moving
contact assembly insure adequate contact force while
providing resilience to allow for contact wear.
The arc box provides a mechanical stop for the mov
ing contact assembly and maintains the proper open
contact gap. In addition, the arc box contains De-ion®
arc quenchers which draw the arc away from the con
tacts at opening and produce a rapid and confined arc
interruption.
Twin kick-out
drop-out
of
the
is de - energized.
INSTALLATION
Before mounting and wmng, the desired acces�ories
such as electrical interlocks, mechanical interlocks,
current transformers and overload relays should be
mounted on the Type GCA Size
Line starter
assembly.
The assembly should then be mounted with four
dia. bolts. Mounting dimensions are shown in Fig.@ .
3
LOAD
CONNECTORS
(17 f32•
DIA
3
HOLES!
.50
5
775
3
Fig.
Type GCA Size 5 AC Contactor Outline
I.L.
15-825-14A
springs insure positive
armature
assembly
when
5
AC Contactor or
. 38 1.5012
MOUNTING SLOTS)
3/8'
DIA. OPEN END
MOUNTING SLOT
12
PLACES,
(From Dwg. 4808663)
the coil
5/16"
1
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Related Manuals for Westinghouse GCA series
Summary of Contents for Westinghouse GCA series
- Page 1 Westinghouse I.L. 15-825-14A TYPE GCA SIZE 5 AC CONTACTOR 2 OR 3 POLES FRONT CONNECTED DESCRIPTION The main contacts are of the bridging or double break type. Both moving and stationary contacts are faced with a silver alloy, whose surfaces are kept clean by rolling and wiping action as the contacts seal.
- Page 2 TYPE GCA SIZE 5 AC CONTACTOR I.L. 15-825-14A The meta interlock operator is then mounted on the crossbar with the hardware provided. MOUNTING SURFACE For proper interlock operation, when the contactor is fully closed, the interlock push rod can be manually depressed .06 (1 /16 inch) further.
- Page 3 I.L. 15-825-14A TYPE GCA SIZE 5 AC CONTACTOR MAINTENANCE STATIONARY CONTACT Contact Forces With new contacts, the total contact forces per pole should be: Initial force 6 to 7 pounds ( Fig. 8-A ) THIN PAPER Final Force 7. 5 to 8.5 pounds ( Fig.
- Page 4 RENEWAL PARTS Complete contactor renewal parts data is isted in RPD 16-100 Complete inestarter renewal parts data is is ted in RPD 11 -20085- GCA Westinghouse Electric Corporation Printed i n U.S.A. General Control Division �/72 Asheville, C. 2881 3...