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Application – Single-Phase Motors
Table 14 Single-Phase Motor Fuse Sizing
TYPE
MOTOR
MODEL
PREFIX
RATING
CIRCUIT BREAKERS OR FUSE AMPS CIRCUIT BREAKERS OR FUSE AMPS
(MAXIMUM PER NEC) (TYPICAL SUBMERSIBLE)
STANDARD
FUSE
DUAL ELEMENT
TIME DELAY
FUSE
CIRCUIT
BREAKER
STANDARD
FUSE
DUAL ELEMENT
TIME DELAY
FUSE
CIRCUIT
BREAKER
HP KW VOLTS
4" 2-WIRE
244504
1/2 0.37
115 35 20 30 30 15 30
244505
1/2 0.37
230 20 10 15 15 8 15
244507
3/4 0.55
230 25 15 20 20 10 20
244508
1 0.75
230 30 20 25 25 11 25
244309
1.5 1.1
230 35 20 30 35 15 30
4" 3-WIRE
214504
1/2 0.37
115 35 20 30 30 15 30
214505
1/2 0.37
230 20 10 15 15 8 15
214507
3/4 0.55
230 25 15 20 20 10 20
214508
1 0.75
230 30 20 25 25 11 25
4" 3-WIRE W/CRC CB
214505
1/2 0.37
230 20 10 15 15 8 15
214507
3/4 0.55
230 25 15 20 20 10 20
214508
1 0.75
230 30 20 25 25 11 25
4" 3-WIRE
214508
1 0.75
230 30 20 25 25 11 25
W/ 1-1.5 CB
224300
1.5 1.1
230 35 20 30 30 15 30
224301
2 1.5
230 30 20 25 30 15 25
224302
3 2.2
230 45 30 40 45 20 40
224303
5 3.7
230 80 45 60 70 30 60
6"
226110
5 3.7
230 80 45 60 70 30 60
226111
7.5 5.5
230 125 70 100 110 50 100
226112
10 7.5
230 150 80 125 150 60 125
226113
15 11
230 200 125 175 200 90 175
14