43
WL Circuit Breaker Selection and Application Guide
1
Do not apply switch or breaker rated at 635VAC to a system with fault current > 85kA RMS.
2
Interrupt rating is 200kA based on fuse rating.
WL Power Circuit Breaker
Ratings for UL 1066 Listed (ANSI C37) Breakers
1
Ratings for UL 1066 Listed Non-automatic Switches
WL frame ratings
Frame size 2
Frame size 3
800 - 2000A
3200 - 5000A
Rating Class
F
L
F
L
Breaking capacity with external relay (kA RMS)
254VAC
20
100
40
100
50/60 Hz, instantaneous trip
508VAC
20
100
40
100
635VAC
20
85
40
85
Short-time current Icw (kA RMS)
1 sec.
20
65
40
100
WL frame ratings – Frame size 3
3200A
4000A
5000A
Rating Class
M
F
H
L
M
F
H
L
M
F
Interrupting current frame
I
cs
254VAC
150
200
85
100
150
200
85
100
150
200
(kAIR RMS) 50/60 Hz
508VAC
150
200
85
100
150
200
85
100
150
200
600VAC
—
200
—
—
—
200
—
—
—
200
635VAC
85
—
85
85
85
—
85
85
85
—
Short-time current
I
cw (kA RMS)
1 sec.
100
—
85
100
100
—
85
100
100
—
Close and latch rating (kA RMS)
100
—
85
100
100
—
85
100
100
—
Applicable rating plug range
800 - 3200A
800 - 4000A
800 - 5000 A
Mechanical make-time (ms)
35
35
35
Mechanical break-time (ms)
34
34
24
Electric close make-time (ms)
50
50
50
Electric trip/ UV break-time (ms)
40/73
40/73
40/73
Electric trip and reclose interval (ms)
80
80
80
Mechanical duty cycles (no maint.)
10,000
10,000
10,000
Electrical duty cycles (no maint)
10,000
10,000
10,000
Draw-out breaker efficiency (Watts loss at rated I
n
)
700
1100
1650
Draw-out fused breaker efficiency (Watts loss at rated I
n
)
Consult factory
Consult factory
Consult Factory
Ambient operating temperature (ºC)
-25 to 40
-25 to 40
-25 to 40
Weights (Fused Carriage/Breaker/Cradle) lbs.
225/260/306
225/260/306
225/260/306
1
2
2
1
1
1
1
1
1
1
1
1
1