Evolution Series E9000 User Manual
Chapter 6 –Overload Heaters
29
Heaters for Ther-Mag Circuit Breaker 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.
Overload relays with automatic reset may automat-
ically start a motor connected to a two-wire control
circuit. When automatic restarting is not desired,
use a three-wire control circuit.
Circuit breaker tripping may be an indication that
a fault current has been interrupted. To provide
continued protection against re or shock haz-
ard, 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.
Size 0 and 1 (Standard and Ambient Comp.)
Motor Full-
Load Amps
3-Ph, 3 Heater
Heater
Number
CR123
Motor Full-
Load Amps
3-Ph, 3 Heater
Heater
Number
CR123
.41-.45 C054A 4.96-549 C592A
.46-.49 C060A 5.50-5.91 C630A
.50-.53 C066A 5.92-6.47 C695A
.54-.59 C071A 6.48-7.20 C778A
.60-.65 C078A 7.21-8.22 C867A
.66-.76 C087A 8.23-8.72 C955A
.77-.84 C097A 8.73-9.67 C104B
.85-.93 C109A 9.68-10.4 C113B
.94-1.04 C118A 10.5-11.0 C125B
1.05-1.15 C131A 11.1-12.4 C137B
1.16-1.27 C148A 12.5-13.2 C151B
1.28-1.39 C163A 13.3-15.4 C163B
1.40-1.55 C184A 15.5-17.1 C180B
1.56-1.73 C196A 17.2-18.0 C198B
1.74-1.89 C220A
Size 1
1.90-2.05 C239A
2.06-2.28 C268A 17.2-18.1 C198B
2.29-2.47 C301A 18.2-20.0 C214B
2.48-2.79 C326A 20.1-21.5 C228B
2.80-3.31 C356A 21.6-22.5 C250B
3.32-3.70 C379A 22.6-23.9 C273B
3.71-4.06 C419A 24.0-26.3 C303B
4.07-4.47 C466A 26.4-27.0 C330B
4.48-4.95 C526A
Size 2 (Standard and Ambient Comp.)
Motor Full-
Load Amps
3-Ph, 3 Heater
Heater
Number
CR123
Motor Full-
Load Amps
3-Ph, 3 Heater
Heater
Number
CR123
5.48-5.85 C630A 16.8-17.9 C180B
5.85-6.47 C695A 18.0-18.7 C198B
6.48-7.35 C778A 18.8-20.4 C214B
7.36-8.06 C867A 20.5-22.7 C228B
8.07-9.03 C955A 22.8-24.7 C250B
9.04-9.61 C104B 24.8-26.3 C273B
9.62-10.5 C113B 26.4-29.5 C303B
10.6-11.6 C125B 29.6-32.5 C330B
11.7-12.5 C137B 32.6-36.7 C366B
12.6-13.6 C151B 36.8-41.9 C400B
13.7-16.7 C163B 42.0-43.2 C440B
43.3-45.0 C460B
Size 3 (Standard and Ambient Comp.)
Motor Full-
Load Amps
3-Ph, 3 Heater
Heater
Number
CR123
Motor Full-
Load Amps
3-Ph, 3 Heater
Heater
Number
CR123
19.0-19.3 F233B 17.8-18.4 F233B
19.4-22.1 F243B 18.5-21.1 F243B
22.2-23.4 F270B 21.2-22.1 F270B
23.5-27.0 F300B 22.2-26.1 F300B
27.1-29.1 F327B 26.2-28.0 F327B
29.2-31.8 F357B 28.1-31.3 F357B
31.9-33.9 F395B 31.4-33.3 F395B
34.0-37.6 F430B 33.4-34.3 F430B
37.7-41.9 F487B 34.4-40.9 F487B
42.0-47.7 F567B 41.0-44.7 F567B
47.8-52.1 F614B 44.8-51.0 F614B
52.2-55.8 F658B 51.1-52.0 F658B
55.9-59.7 F719B 52.1-55.4 F719B
59.8-68.1 F772B 55.5-63.3 F772B
68.2-71.5 F848B 63.4-66.1 F848B
71.6-78.2 F914B 66.2-73.5 F914B
78.3-87.5 F104C 73.6-82.2 F104C
87.6-90.0 F114C 82.3-90.0 F114C
Size 4 (Standard and Ambient Comp.)
Motor Full-
Load Amps
3-Ph, 3 Heater
Heater
Number
CR123
Motor Full-
Load Amps
3-Ph, 3 Heater
Heater
Number
CR123
27.1-32.2 F357B 28.8-32.0 F357B
32.3-34.0 F395B 32.1-34.2 F395B
34.1-36.8 F430B 34.3-36.7 F430B
36.9-44.6 F487B 36.8-43.9 F487B
44.7-48.4 F567B 44.0-46.6 F567B
48.5-53.9 F614B 46.7-52.6 F614B
54.0-57.4 F658B 52.7-55.6 F658B
57.5-60.0 F719B 55.7-58.7 F719B
60.1-69.5 F772B 58.8-67.1 F772B
69.6-71.7 F848B 67.2-70.6 F848B
71.8-79.9 F914B 70.7-76.3 F914B
80.0-92.3 F104C 76.4-88.7 F104C
92.4-97.0 F114C 88.8-93.4 F114C
97.1-108 F118C 93.5-105 F118C
109-118 F133C 106-114 F133C
119-131 F149C 115-128 F149C
132-135 F161C 129-131 F161C
132-135 F174C
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