Evolution Series E9000 User Manual
38
Heaters for NEMA Size 6 and 7 Fused Controllers
For continuous-rated motors with a service factor of
1.15 to 1.25, select the appropriate heaters for the
motor full-load current. For continuous-rated motors
with a service factor of 1.0, multiply the motor full-load
current by 0.9 and use this value to select heaters.
Overload relay tripping current in 40° C ambient is the
minimum value of full-load current multiplied by 1.25.
Provide short-circuit protection in accordance with the
National Electrical Code
Opening of the circuit breaker or power fuse may be
an indication that a fault current has been interrupted.
To provide continued protection against fire or shock
hazard, examine all current-carrying parts and other
components of the motor controller and replace any
damaged components. If heater burnout occurs, the
complete overload relay must be replaced.
Overload heaters for controllers with NEMA Size 6 starters for
standard and ambient-compensated ratings, CT ratio 600:5.
Maximum Motor
Full-Load Current
Current Transformer
Secondary Amps
Heater Number
CR 123
181-197
1.51-1.64
C220A
198-214
1.65-1.78
C239A
215-238
1.79-1.98
C268A
239-258
1.99-2.15
C301A
259-290
2.16-2.42
C326A
291-346
2.43-2.88
C356A
347-387
2.89-3.22
C379A
388-423
3.23-3.53
C419A
424-467
3.54-3.89
C466A
468-516
3.90-4.30
C526A
517-540
4.31-4.50
C592A
Overload heaters for controllers with NEMA Size 7 starters for
standard and ambient-compensated ratings, CT ratio 800:5.
Maximum Motor
Full-Load Current
Current Transformer
Secondary Amps
Heater Number
CR 123
346-387
2.16-2.42
C326A
388-461
2.43-2.88
C356A
462-515
2.89-3.22
C379A
516-565
3.23-3.53
C419A
566-622
3.54-3.89
C466A
623-688
3.90-4.30
C526A
689-763
4.31-4.77
C592A
764-810
4.78-5.06
C630A
Electronic Overload for Circuit Breaker and Fused
Controllers
The tripping current is 120% of the dial setting. For
continuous-rated motors with a service factor of 1.15
to 1.25, set the dial to the motor full-load current. For
continuous-rated motors with a service factor of 1.0,
set the dial to 0.9 of the motor full-load current.
Refer to GEH-6430 or 6431 before energizing.
Opening of the branch-circuit protective device may be
an indication that a fault current has been interrupted.
To provide continued protection against fire or shock
hazard, examine all current-carrying parts and other
components of the motor controller and replace any
damaged components. If heater burnout occurs, the
complete overload relay must be replaced.
Provide short-circuit protection in accordance with NEC
Article 430 or CE Code Part 1.
Tripping current is 120% of Dial setting. Motors with 1.15-1.25
service factor, set dial to motor FLA Motors with 1.0 service fac-
tor, set dial to 0.9 motor FLA.
Catalog numbers of electronic overloads for various sizes of
NEMA starters and current ranges.
NEMA
Size
FLA Range in
Amps
Catalog
Number
Breaker Frame & Type
1
0.8 to 1.59
CR324CXD
E Mag. & Thermal Mag.
1
1.6 to 3.19
CR324CXE
E Mag. & Thermal Mag.
1
3.2 to 6.49
CR324CXF
E Mag. & Thermal Mag.
1
6.5 to 12.8
CR324CXG
E Mag. & Thermal Mag.
1
13 to 27
CR324CXH
E Mag. & Thermal Mag.
2
13 to 25.6
CR324DXG
E Mag. & Thermal Mag.
2
26 to 49.9
CR324DXH
E Mag. & Thermal Mag.
2
50 to 100
CR324DXJ
E Mag. & Thermal Mag.
3
17 to 34.9
CR324FXK
E Mag. & Thermal Mag.
3
35 to 64.9
CR324FXL
E Mag. & Thermal Mag.
3
65 to 90
CR324FXM
E Mag. & Thermal Mag.
4
17 to 34.9
CR324FXK
E,F&G Mag. & Thermal Mag.
4
35 to 64.9
CR324FXL
E,F&G Mag. & Thermal Mag.
4
65 to 135
CR324FXM
E,F&G Mag. & Thermal Mag.
5
1
32 to 64.0
CR324GXN
G Mag. & Thermal Mag.
5
1
65 to 129.9
CR324GXP
G Mag. & Thermal Mag.
5
1
130 to 270
CR324GXQ
G Mag. & Thermal Mag.
6
2
130 to 259.9
CR324HXS
G,K Mag. & Thermal Mag.
6
2
260 to 540
CR324HXT
K Mag. & Thermal Mag
1
300:15 CT’s
2
800:5 CT’s
