GE Industrial Solutions 300 Line NEMA Size 5 - Manual (Page 2)

Frequency
(Hertz)
115-
120V
200-
208V
230-
240V
-----
460-
480V
575-
600V
60 002 023 003 ------ 004 005
Frequency
(Hertz)
110V ----- 220V 380V 440V 550V
50 002 ----- 003 064 004 005
Ref.No Description
Catalog
Number
Quantity
Required
1
2
3
4
5
6
7
8
9
10
Coil retainer assembly
Overload relay (3-heater, non-compensated form, 1 NC contact)
Overload relay (3-heater, non-compensated form, 1 NO-1 NC contact)
Set of stationary & movable contacts with springs and screws for three-poles
Molded cover for three-poles
Return spring for movable arm
Molded movable arm with return spring for 2, 3 pole
Armature and frame (magnet) with retainer
Operating coil for 2-and 3-pole
Retainer for armature
55-154607G003
CR324G310F
CR324G360F
55-154607G041
55-530245G001
55-153205G002
55-154607G042
55-154607G045
55-530249G***
55-154607G046
4
1
1
1
3
1
1
1
1
1
CHECK FOR WELDED CONTACTS IN
OVERLOAD RELAY
This feature permits the maintenance
man to check for welded relay contacts
by simply depressing the white operator
located at the top of the overload relay
contact housing. When the relay is in the
reset condition, an audible “click” will be
heard when the operator is depressed,
indicating that the contacts are
operating normally. A continuity check
can also be made by disconnecting the
control wiring from the terminals of the
relay and placing a bell set or a
resistance-measuring instrument in the
circuit. Connecting either of these across
the relay terminals will indicate the relay
contact is closed until the contact-check
operator is depressed, opening the
circuit.
The exclusive manual contact operation
check gives positive assurance that
contacts have not welded due to short
circuits in the control wiring.
SIMPLE MAINTENANCE
300-Line starters and contactors require virtually
no corrective maintenance. Preventive
maintenance will assure many years of
dependable on-line service.
1. Always remove power from device before
performing any maintenance.
2. Keep magnet mating surfaces 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 ex
posed. DO NOT FILE the contacts. Filing or
otherwise dressing the contacts only results in lost
tip material and reduces contactor or starter life.
5. The ultimate tripping current of the installed
relay heater can be adjusted ±10% by using
adjustment dial.
General Electric Company
41 Woodford Avenue, Plainville, CT 06062
DEH-40630 R01 08/10, 10-2049 © 2010 General Electric
Visit us on the web at www.Geindustrial.com
1. Perform steps 1 through 5 under
“Coil Removal”.
2. Remove magnet from molded
cover and movable arm.
3. Remove return spring from center
of movable arm.
4. Remove molded cover from
movable arm.
5. Depress and slide movable
contact, spring, and spring seat from
movable arm.
6. Remove screws holding stationary
contacts in place and remove
stationary contacts
7. Reassemble device by reversing
procedure
PRINCIPAL RENEWAL PARTS
NOTE: Do not attempt to remove or
replace arc traps in arc chute cover.
When reassembling, note that the
arc chute cover will only fit one way and
is marked “TOP” in upper right hand
corner. Magnet and movable arm will fit
either way but will be quieter if
reassembled the same way they were
taken apart.
*** Insert numbers for particular coil rating required. See Coil Table above
Accessory Kits
Figure 3
First NO aux. cont. for CR305, CR306 (right side mtg)……………CR3O5X500A
First NC aux. cont. for CR305, CR306 (right side mtg)……………CR3O5X500B
First NO-NC aux. cont.for CR305, CR306 (right side mtg)……. CR3O5X500C
Additional NO aux. cont. for all forms . . ……………………………………CR3O5X100D
Additional NC aux. cont. for all forms . . ……………………………………CR3O5X100E
Pushbutton……………………………………………………………………………………… CR305X520B
Selector switch, H—O—A. …………………………………………………………… .CR305X530B
Selector switch, OFF—ON. …………………………………………………………… CR305X530D
Indicating light. ……………………………………………………………………………… CR305X550B
Fifth pole. (for adding to 4-pole form only)……………………………… CR3O5X511B
Control circuit fuse………………………………………………………………CR305X541A, B, C, D
Surge Suppressor……………………………………………………………………………………...CR305X146C
Replacement Coils
For two- and three-pole devices, order coil catalog
number 55-530249G plus number in table below.
For four- and five-pole devices, order coil catalog
number 55-501493G plus number in table below.
Example: 55-530249G002 is rated 115-120V, 60
Hz/110V, 50 Hz.