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 Required
CR301/CR311/CR390
Ref.No
Figure.4
Description
Catalog
Number
CR307/CR308/
CR387
Left Cont..
Right Cont.
1
2
3
4
5
6
7
8
9
10
11
12
Coil retainer assembly
Overload relay (3-heater, non-compensated form, 1 NC contact)
Overload relay (3-heater, non-compensated, 1 NO-1 NC contacts)
Set of stationary and movable contacts with springs and screws for four poles:
NEMA Size 0
NEMA Size 1
Molded cover for stationary and movable contacts
Return spring for movable contact support
Molded movable contact support for 2-, 3-, 4- pole
Armature and frame (magnet)
Operating coil
Spring retainer for armature
Overload relay for 2-speed single-winding controller (1 NC contact)
Overload relay for 2-speed single-winding 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 condition there should be continuity
between the terminals. Depress white manual
check operator to trip the relay. In the tripped
condition the circuit between the terminals
should be open indicating the contacts are
operating normally. Rewire the terminals and
reset the relay for normal operation
Maintenance
1.
Always remove power from device before
performing any maintenance.
2.
Keep magnet mating surface free of
accumulated dirt or dust.
3.
Do Not Oil Or Grease
the magnet mating
surfaces.
4.
Contacts are carefully designed for
maximum life. They need only be replaced
when nearly all the silver tip is gone and the
contact tip support is exposed.
Do Not File
the
contacts. Filing or dressing the contacts only
results in lost tip material and reduces life.
5.
The ultimate tripping current of the installed
relay heater can be adjusted ± 10% by using
the adjustment dial, shown in Figure 1.
Caution:
Before adjusting or operating reverser,
make sure the mechanical interlock arm is
engaged with movable contact arm.
6.
On reversing and two-speed starters, the
mechanical interlock has been factory adjusted and
normally should never have to be readjusted. If
readjustment is ever needed, these steps should be
followed:
A.
Close one contactor by hand by pushing down on
armature.
B.
Using the other hand, loosen the nut on opposite
contactor interlock arm and slide it towards the top
of the elongated slot until all gap is taken up
between the two arms. Follow the same procedure
with the opposite contactor and interlock arm.
C.
Best adjustment is usually obtained when both
mechanical interlock arm assemblies are as far up in
the elongated slot as possible.
D.
With both arms adjusted, there should be a very
slight gap (approximately 1/16- inch) between the
arms with both contactors open. Neither arm should
overlap the other with both contactors open.
***Coil Suffix Table
(Order 15D21G plus coil suffix number below)
Accessory Kits
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
Additional NO aux. cont. for all forms. . … CR3O5X100D
Additional NC aux. cont. for all forms . . .. CR3O5X100E
Pushbutton………………………………………………….. CR305X120N
Selector switch, H—O—A. ………………………… CR305X130N
Selector switch, OFF—ON. ……………………… CR305X130P
Indicating light. ………………………………………… CR305X150N
Fifth pole. …………………………………………………… CR3O5X111B
Control circuit fuse………………………………….. CR305X141A, B, C, D
General Electric Company
41 Woodford Avenue, Plainville, CT 06062
GEH-5193B 08/10, 10-2049 © 2010 General Electric
Visit us on the web at www.Geindustrial.com
Principal Renewal Parts
*** Add coil suffix number from above table to complete the catalog number. Example: Cat. No. 15D21GO02 has ratings of 115—120V, 60 Hz and 11OV, 50 Hz.
+Omitted on 2-speed single-winding controller.
++ Quantity one for multi-speed controller.
These instructions do not purport to cover all details or variations in equipment not to provide for every possible contingency to
be met in connection with installation, operation or maintenance. Should further information be desired or should particular
problems arise which are not covered sufficiently for the purchaser’s purpose, the matter should be referred to the GE Company.
