WARNING:
Disconnect an power from the starter and
overload relay before installing, modifying, or
servicing.
AVERTISSEMENT:
Couper l'alimentation
installation, modification, ou entretien.
avant
CAUTION:
Before installing this
product
in a nuclear
application, determine if it is
intended
for such use.
ATTENTION:
Avant d'installer le produit dans une
application nudeaire, verifier si cela est permis.
Introduction
The ABB Solid State Overload Relay is shown in
Figure l. The catalog numbers and electrical
specifications are listed in Table 1.
Replacement Installation
The following instructions describe the installation
of a Solid State Overload Relay as a replacement for
an existing overload relay on a 300-Line starter.
1. Disconnect all sources of power to the starter.
2. Disconnect all control and power wiring from
the load side of the existing overload relay.
3. Remove and save the overload relay mounting
screw, located at the bottom right and upper left
corners of the overload relay housing.
4. Remove the overload relay from the starter
baseplate.
5. Reassemble the Solid State 9verload Relay from
this kit in the reverse order.
Catalog Number:
Current
Replacement
NEMA
Range,
Starter Mount
Size
amps
CR324GXNS
5
32-68
CR324GXPS
5
65-135
CR324GXQS
5
130-270
CR324HXSS
6
130-270
CR324HXTS
6
260-540
Figure 1. Solid State Overload Relay (external current transformers
not shown}.
6. Check to see that the two wires from each
current transformer have been reconnected to
the top and bottom terminals on the same pole
of the Solid State Overload Relay as on the
overload relay that was replaced.
7. Torque the bottom terminal screws to 20 lb-in
and the top terminal screws to 12 lb-in.
8. Connect the control and power wiring to the
terminals on the load side of the Solid State
Overload Relay, shown in Figure 2.
9. Reconnect power sources to the starter.
10. Fully depress the blue reset button on the Solid
State Overload Relay to insure that it is in the
reset position. The yellow trip flag will be at its
right position, as illustrated in Figure 2.
Max Fuse Size, Max Breaker Use with
amps (Class
Rating,
ABB
T,H�J,L,R,K)
amps
Contactor
250
250
CR306G
500
400
CR306G
800
800
CR306G
800
800
CR306HH
1600
1600
CR306HH
NOTE: Maximum fuse and breaker sizes are intended as guidelines. Refer to NEC and local codes for proper fuse and
breaker selection.
Table 1. Solid State Overload Relay, NEMA Sizes 5
&
6, catalog numbers and electrical specifications.
1
GEH
-
6432 User's Guide
Solid State Overload Relay
NEMA Sizes 5 & 6
