7
Typical Sections
Circuit Breaker Characteristics
1
Maximum voltage for which the breaked is designed and upper limit of operation
2
4000A rating is forced air aooled, indoor construction only. 3500A must be derated to 3250A in outdoor construction.
3
Within the limitations stated in ANSI C37.04.1999.5.8
4
Exceeds ANDI C37.06-2000 preferred ratings.
Rated
Maximum
Voltage
(kV rms)
1
Rated
Voltage
Range
(k Factor)
Insulation Withstand Test Voltages
Rated
Continuous
Current at
60Hz
(Amps rms)
2
Rated
Short Circuit
at Maximum
kV
(kA rms)
3
Rated
Interrupting
Time
(cycles)
Rated
Maximum
Voltage
Divided by
K (kV rms)
Maximum
Symmetrical
Interrupting
Capability and
Short Time
Current (kA rms)
Closing and
Latching
Capability 2.7K
times Rated
Short Circuit
Current (kA Crest)
Low
Frequency
(kV rms)
Full Wave
Impulse
(kV Crest)
4.76 1.0 19 60 1200-4000
31.5 5 or 3 2 31.5 82
40 5 or 3 2 40 104
50 5 or 3 2 50 130
634 5 2 63 164
8.25 1.0 36 95 1200-4000
40 5 or 3 2 40 104
504 5 or 3 2 50 130
634 5 2 63 164
20 5 or 3 2 20 52
15 1.0 36 95 1200-4000
25 5 or 3 2 25 64
31.5 5 or 3 2 31.5 82
40 5 or 3 2 40 104
50 5 or 3 2 50 130
63 5 2 63 164
97”
PV
Breaker
PV
Breaker
A 36 inch
extension
on the left
and right
side is
required
for breaker
lift truck
PV
Breaker
PV
Breaker
112”
111”
97”
97”
94”
181”
6”
6”
3”
75”
Aisle
Outdoor Protected AisleOutdoor Non-Walkin
3”
New Lineups