General Electric Heater Coil Selection Chart

Heater Selection Information

To prevent overloading the starter, do not select heater(s) for a motor of larger rating than the maximum given on the nameplate for the starter.

For continuous rated motors, with a service factor of 1.15 to 1.25,select the heater with maximum motor amperes equal to or immediately greater than the motor full-load current (provides a maximum of 125 percent protection). For continuous rated motors with no service factor, multiply the full-load current of the motor by 0.90 and use this value to select the heater.

How to Select Heaters

The table below should be used to determine which column of motor full load amperes applies for heater selection. Select in order, the base catalog number, the NEMA type of enclosure, and the column to be used in the proper table by NEMA size. If full-load amperes of the motor falls between two ratings, select heaters for the higher rating.

Series Description Heater Table Column
CR3063 phase, 3 pole, 3 leg protection standardC
ambient compensated (except size 3 & 4)D
ambient compensated size 3D
ambient compensated size 4E

Table for CR110H & CR110Y Manual Starters ... click here

General Electric
NEMA SIZES 00, 0 and 1 NEMA SIZE 2 NEMA SIZE 3
Catalog
Number		 Maximum Motor - Full Load Amps Catalog
Number		 Maximum Motor - Full Load Amps Catalog
Number		 Maximum Motor - Full Load Amps
A B C D A B C D C D
CR123C118A 1.12 1.09 1.04 1.02 CR123C592A 5.92 5.79

CR123F357B 31.8 31.3
CR123C131A 1.26 1.22 1.15 1.10 CR123C630A 6.23 6.12 5.85 5.72 CR123F430B 37.6 34.3





CR123C695A 6.63 6.49 6.47 6.30 CR123F487B 41.9 40.9
CR123C148A 1.40 1.31 1.27 1.23 CR123C778A 7.72 7.59 7.35 7.04


CR123C163A 1.46 1.46 1.39 1.38 CR123C867A 8.96 8.71 8.06 7.91 CR123F614B 52.1 51.1
CR123C184A 1.63 1.59 1.55 1.49




CR123F772B 68.1 63.3
CR123C196A 1.79 1.74 1.73 1.67 CR123C104B 10.4 10.1 9.61 9.27


CR123C220A 1.97 1.93 1.89 1.79 CR123C113B 11.7 11.2 10.5 9.99 CR123F848B 71.5 66.1





CR123C125B 12.1 11.9 11.6 11.1 CR123F114C 90.0 90.0
CR123C239A 2.25 2.13 2.05 1.98 CR123C137B 13.5 12.6 12.5 12.1


CR123C268A 2.43 2.37 2.28 2.24 CR123C151B 14.7 14.5 13.6 13.1


CR123C301A 2.60 2.52 2.47 2.43







CR123C326A 2.96 2.87 2.79 2.75 CR123C163B 18.3 17.7 16.7 15.5


CR123C356A 3.57 3.39 3.31 3.25 CR123C180B 20.1 19.1 17.9 16.8







CR123C198B 22.3 21.4 18.7 18.0


CR123C379A 3.86 3.59 3.70 3.43 CR123C214B 25.0 22.9 20.4 19.7


CR123C419A 4.43 4.31 4.06 4.03 CR123C228B 27.7 24.7 22.7 21.6


CR123C466A 4.87 4.57 4.47 4.43







CR123C526A 5.37 5.31 4.95 4.94 CR123C250B 29.3 25.9 24.7 23.9


CR123C592A 5.99 5.86 5.49 5.36 CR123C237B 30.7 27.1 26.3 25.5







CR123C303B 32.7 30.2 29.5 28.2


CR123C630A 6.39 6.19 5.91 5.77 CR123C330B 35.6 34.8 32.5 31.6


CR123C695A 6.87 6.61 6.47 6.35







CR123C778A 7.71 7.61 7.20 6.92 CR123C400B 45.0 45.0 41.9 37.8


CR123C867A 8.72 8.46 8.22 7.99 CR123C440B

43.2 40.6















CR123C104B 10.5 10.4 9.67 9.19







CR123C113B 11.7 11.3 10.4 10.0







CR123C125B 12.2 11.9 11.0 10.7







CR123C137B 13.5 13.0 12.4 12.0







CR123C151B 15.1 14.5 13.2 12.9




















CR123C163B 17.5 17.4 15.4 15.1







CR123C180B 18.9 18.6 17.1 16.3







CR123C198B 20.8 20.5 18.1 17.9







CR123C214B 22.4 22.3 20.0 19.7







CR123C228B 25.5 25.7 22.5 21.2




















CR123C250B 26.2 25.7 22.5 22.3







CR123C273B 27.0 27.0 23.9 22.3







CR123C303B

26.3 25.5







CR123C330B

27.0 27.0







The table below gives a proper size heater to trip the switch at approximately 125 per cent of motor current. Listed values are for motors with 1.15/1.25 service factor. For continuous rated motors with a service factor of 1.0, multiply full-load current of motor by 0.9 and use this value to select heater. If motor full-load amperes falls between two ratings, select heater for the higher rating. For 1.35 service factor motors, multiply full-load current of motor by 1.15 and use this value to select heater(s).

Max Full-load amps Heater Catalog Number
3.88 CR123H446A
4.60 CR123H529A
5.00 CR123H575A
5.43 CR123H625A
6.41 CR123H739A
6.98 CR123H802A
8.25 CR123H950A
10.6 CR123H122A
13.6 CR123H157A