38
E VOLUTI ON S E R I E S E9 0 0 0
M OTO R CO N T R O L C EN T ER
Size 3 (Standard and Ambient Comp.)
Heaters for mag-break® controllers
The Mag-Break protector is factory adjusted to the
minimum trip setting
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.
Use the heater table to verify that the Mag-Break
and current limiter rating is correct for the motor
full-load current. Then set the Mag-Break trip
setting to the recommended value.
If the Mag-Break trips during motor startup,
increase the trip setting by one step at a time until
the motor can be consistently started. Do not
exceed the maximum trip setting shown in the
heater table.
Overload relay tripping current in 40° C ambient is
the minimum value of heater full-load current
multiplied by 1.25.
Size 4 (Standard and Ambient Comp.)
Size 5 (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
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
Motor Full-
Load Amps
3-Ph, 3 Heater
Heater
Number
CR123
Motor Full-
Load Amps
3-Ph, 3 Heater
Heater
Number
CR123
109-118
C592A
185-200
C104B
119-128
C630A
201-221
C113B
129-138
C695A
222-237
C125B
139-155
C778A
238-262
C137B
156-168
C867A
263-270
C151B
169-184
C955A
To maintain overload, short-circuit, and
groundfault protection, use the following
instructions to select heaters and to adjust
the Mag-Break trip setting.
Circuit breaker tripping 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.
