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Section 5. EntelliGuard Breaker
Table 5.2
Allowable Current Limiting Fuse Sizes for EntelliGuard Breakers
Breaker
Frame
Sensor
Messenger Current
Type
Size
Rating
Setting Switch
Below 150A
150A
EGF-08
800A
400A
800A
400A and below
EGF-16
1600A
800A
1600A
2
2000A
2000A
2000A and below
EGS-20
2
3200A
3200A
3200A and below
EGS-32
2
4000A
4000A
4000A and below
EGS-40
2
5000A
5000A
5000A and below
EGS-50
* These fuse sizes are also available as Welder Limiters.
1
Class L fuses less than 800A are not UL or CSA listed. Use Class J fuses for 600A
and below. The maximum fuse rating is the largest fuse that tests show will result
in proper performance of the breaker and fuse in combination under short-circuit
conditions. Only Ferraz-Shawmut fuses should be used for proper coordination.
2
Fuses are mounted in a separate roll-out element (fuses shipped as "XS" material).
3
Integrally fused 1600A frame breakers (EGF-16) equipped with 2500A fuses can be
furnished with rating plugs from 300 – 1600A. Breakers equipped with 2500A fuses
cannot be modified to accept lower rated fuses. EGF-16 breakers equipped with
2000A and lower fuses cannot be upgraded to 2500A fuses. The maximum trip
rating for an EGF-16 breaker is 1200A when furnished with other than 2500A fuses
(see table for min/max fuse rating for each rating plug value). 2500A fuses preclude
the use of shutters in the breaker cubicle.
24
Ferraz-Shawmut Fuse Range
150A
300/350/400/450/500/600/
800*/1000*/1200*/1600*A
225A
300A
400/450/500/600/800*/1000*/
400A
1200/1600*A
600A
600/800*/1000*/1200/1600*A
700A
800*/1000*/1200/1600*A
800A
1000*/1200/1600*A
450/500/600/800*/1000*/1200/
3
1600*/2000*/2500A
500/600/800*/1000*/1200/
500A
3
1600*/2000*/2500A
600/800*/1000*/1200/1600*/
600A
3
2000*/2500A
700A
800*/1000*/1200/1600*/
3
2000*/2500A
800A
1000A
1000*/1200/1600*/2000*/2500A
3
1200A
1600*/2000*/2500A
3
1600A
2500A
2000/2500A
2000/2500/3000/4000A
2000/2500/3000/4000/5000A
1
3
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