60 Hertz 115-
120V
200-
208V
230-
240V ---- 460-
480V
575-
600V
50 Hertz 110 ----- 220V 380V 440V 550V
Coil Suffix 002 023 003 064 004 005
Quantity Require
CR301/CR311/CR390
Ref.No
Figure.4 Description Catalog
Number CR307/CR308/
CR387
1
2
3
4
5
6
7
8
9
10
11
12
Coil retainer assembly
Overloa relay (3-heater, non-compensate form, 1 NC contact)
Overloa relay (3-heater, non-compensate , 1 NO-1 NC contacts)
Set of stationary an movable contacts with springs an screws for four poles:
NEMA Size 0
NEMA Size 1
Mol e cover for stationary an movable contacts
Return spring for movable contact support
Mol e movable contact support for 2-, 3-, 4- pole
Armature an frame (magnet)
Operating coil
Spring retainer for armature
Overloa relay for 2-spee single-win ing controller (1 NC contact)
Overloa relay for 2-spee single-win ing controller (1 NO-1 NC contact)
546A301G050
CR324C310F
CR324C360F
---------------
546A300G002
546A301G053
188D711P001
541A278P001
187D350P001
546A301G054
15D21G***
546A588P001
CR324C310G
CR324C360G
2
1
1
-
1
1
1
1
1
1
1
1
-
-
2
1+
1+
-
1
1
1
1
1
1
1
1
1
1
2
++
++
-
1
1
1
1
1
1
1
1
-
-
In this con ition there shoul be continuity
between the terminals. Depress white manual
check operator to trip the relay. In the trippe
con ition the circuit between the terminals
shoul be open in icating the contacts are
operating normally. Rewire the terminals an
reset the relay for normal operation
1. Always remove power from evice before
performing any maintenance.
2. Keep magnet mating surface free of
accumulate irt or ust.
3. Do Not Oil Or Grease the magnet mating
surfaces.
4. Contacts are carefully esigne for
maximum life. They nee only be replace
when nearly all the silver tip is gone an the
contact tip support is expose . Do Not File the
contacts. Filing or ressing the contacts only
results in lost tip material an re uces life.
5.
The ultimate tripping current of the installe
relay heater can be a juste ± 10% by using
the a justment ial, shown in Figure 1.
Before adjusting or operating reverser,
make sure the mechanical interlock arm is
engaged with movable contact arm.
mechanical interlock has been factory a juste an
normally shoul never have to be rea juste . If
rea justment is ever nee e , these steps shoul be
followe :
A. Close one contactor by han by pushing own on
armature.
B. Using the other han , loosen the nut on opposite
contactor interlock arm an sli e it towar s the top
of the elongate slot until all gap is taken up
between the two arms. Follow the same proce ure
with the opposite contactor an interlock arm.
C. Best a justment is usually obtaine when both
mechanical interlock arm assemblies are as far up in
the elongate slot as possible.
D. With both arms a juste , there shoul be a very
slight gap (approximately 1/16- inch) between the
arms with both contactors open. Neither arm shoul
overlap the other with both contactors open.
(Or er 15D21G plus coil suffix number below)
First NO aux. cont.for CR305, CR306…………CR3O5X100A
First NC aux. cont. for CR305, CR306…………CR3O5X100B
First NO-NC aux. cont.for CR305, CR306.. .CR3O5X100C
A itional NO aux. cont. for all forms. . … CR3O5X100D
A itional NC aux. cont. for all forms . . .. CR3O5X100E
Pushbutton………………………………………………….. CR305X120N
Selector switch, H—O—A. ………………………… CR305X130N
Selector switch, OFF—ON. ……………………… CR305X130P
In icating light. ………………………………………… CR305X150N
Fifth pole. …………………………………………………… CR3O5X111B
Control circuit fuse………………………………….. CR305X141A, B, C, D
General Electric Company
41 Woo for Avenue, Plainville, CT 06062
GEH-5193B 08/10, 10-2049 © 2010 General Electric
Visit us on the web at www.Gein ustrial.com
*** A coil suffix number from above table to complete the catalog number. Example: Cat. No. 15D21GO02 has ratings of 115—120V, 60 Hz an 11OV, 50 Hz.
+Omitte on 2-spee single-win ing controller.
++ Quantity one for multi-spee controller.
These instructions o not purport to cover all etails or variations in equipment not to provi e for every possible contingency to
be met in connection with installation, operation or maintenance. Shoul further information be esire or shoul particular
problems arise which are not covere sufficiently for the purchaser’s purpose, the matter shoul be referre to the GE Company.
