CleaverBrooks 4WI - Fuse Sizing Charts

Parts
9-40
750-211 (revised 2009)
Promethean Boilers, Model 4WI Manual
PUMP, AIR COMP. & OIL HEATER FUSE SIZING
220-240V
500
200-208V
1-8/10
1-8/10
2-8/10
4-1/2
100
150
175
200
250
350
450
10
15
25
30
45
6-1/4
7
10
6015
10
1000
1500
RATING
VA
15
150
300
500
750
12
8
3-1/2
4
7
1-8/10
200-208V
3-1/2
1-1/2
3
20
30
50
125
150
2
3
5
7-1/2
20
25
30
40
50
60
75
100
12
15
25
7
90
70
SINGLE PHASE 50/60 HERTZ
110-120V
8
9
12
17-1/2
20
25
30
40
3/4
1
1-1/2
2
3
5
7-1/2
10
ELECTRICAL LOAD
1/4
1/3
1/2
9
10
12
15
20
35
50
60
35
40
12
20
7
9
5
220-240V
4-1/2
4-1/2
6-1/4
50
202530
1217-1/22530
4
6-1/4
45
8/10
1-8/10
2-8/10
3-1/2
346-416V
35
3-1/2
5-6/10
440-480V
20
2-1/2
3
6/10
1-1/2
25
7
15
25
10
400
450
6-1/4
10
15
300
250
200
175
150
100
80
70
100
125
150
40
50
60
80
150
200
3-2/10
4-1/2
6-1/4
10
4-1/2
5-6/10
12
8
200
225
25
35
40
50
70
80
100
125
80
100
125
150
35
40
50
70
THREE PHASE 50/60 HERTZ
4-1/2
35
30
20
12
9
7
5
8
12
17-1/2
20
2-1/4
3-2/10
4
5-6/10
220-240V
1-8/10
1-8/10
2-8/10
346-416V
1-8/10
1-4/10
1-8/10
2-1/2
3-1/2
5
8
12
15
6-1/4
10
15
17-1/2
1-8/10
2-1/4
3-2/10
4-1/2
550-660V
8/10
8/10
1
440-480V
1-6/10
1
1
110
125
BLOWER MOTO
R FUSE SIZING
ON POWER SYSTEMS WITH VOLTAGE, FREQUENCY OR PHASE
CONSULT CLEAVER-BROOKS PARTS DEPT. FOR FUSE SIZING
600
300
350
400
500
175
200
200-208V
1-8/10
1-8/10
4-1/2
8015
125
150
20
25
30
40
50
60
75
100
SINGLE PHASE 50/60 HERTZ
110-120V
20
60
25
35
40
10
12
17-1/2
3/4
1
1-1/2
2
3
5
7-1/2
10
ELECTRICAL LOAD
1/4
1/3
1/2
30
50
60
90
10
12
17-1/2
20
40
60
20
30
12
15
9
7
5-6/10
6-1/4
9
220-240V
60
303545
500
600
300
400
350
300
200
175
125
100
80
250
125
175
200
50
60
70
100
300
350
200
250
100
150
175
200
50
60
70
80
150
175
80
110
50
60
70
40
THREE PHASE 50/60 HERTZ
17-1/2
5-6/10
50
40
30
12
10
8
10
15
20
30
3-2/10
4-1/2
6-1/4
7
220-240V
1-8/10
1-8/10
4
346-416V
2
15
20
25
9
2-8/10
5-6/10
6-1/4
4
17-1/2
20
7
12
2-1/4
3-2/10
4-1/4
5
550-660V440-480V
1
2
18/10
8/10
1-6/10
MOTOR HP
HEATER KW
MOTOR HP
DUAL ELEMENT, TIME DELAY.
TABLE BELOW SHOWS VENDOR TYPES
XFMR MOUNTED
PANEL MOUNTED
VENDOR
BUSSMAN
0-250V
FRN
251-600V
FRS FNQR
0-600V
TR TRS ATQR
FLN FLS KLDR
GOULD
LITTELFUSE
PANEL MOUNTED FUSES ARE CLASS RK5 OR J DUAL
XFMR MOUNTED FUSES ARE CLASS CC TIME DELAY.
ELEMENT TIME DELAY. SEE CHART BELOW FOR TYPE.
FUSE SIZES ABOVE ARE CLASS RK5 OR J
LITTELFUSE
DUAL ELEMENT, TIME DELAY.
FUSE SIZES ABOVE ARE CLASS RK5 OR J
TABLE BELOW SHOWS VENDOR TYPES
0-250V
251-600V
BUSSMAN
FRN
FRS
TR
TRS
GOULD
FLS
FLN
110-120V 220-240V 200-208V 220-240V 346-416V 440-480V 550-660V
CLASS
RK5
0-600V LPJ AJT JTDCLASS J
0-250V
251-600V
0-600V
RK5
CLASS J
CLASS
BUSSMAN
FRS
LPJ
FRN FLN
FLS
JTD
LITTELFUSE
TRS
AJT
TR
GOULD
PRI SEC
FNQ
ATQ
FLQ
TRANSFORMER FUSE SIZING
2000 15 12 8 7
SECONDARY
FUSE
550-600V
3-1/2
2
2-8/10
4-1/2
5-6/10
1
10
15
20
5-6/10
10
4
6/10 2
PRIMARY FUSE
3000 25 20 12 12 9 30
ALL CONTROL WIRING THAT HAS AN AMP
RATING OF 10 OR LESS IS TO USE 16 GA. WIRE.
UNLESS OTHERWISE NOTED.
NOT LISTED ON THIS SHEET.
FUSE SIZING (SHEET 2 OF 3 SHEETS)
SINGLE PHASE 50/60 HZ THREE PHASE 50/60 HERTZ