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WL Circuit Breaker Selection and Application Guide
WL Insulated Case Circuit Breaker
Ratings for UL489 Listed Breakers
WL frame ratings – Frame size 3
4000A
5000A
Rating Class
L
C
L
C
Interrupting current frame Ics (kAIR RMS) 50/60 Hz 240VAC
100
150
100
150
480VAC
100
150
100
150
600VAC
85
100
85
100
Short-time current
I
cw (kA RMS)
0.4 sec.
85
100
85
100
Extended instantaneous protection rating
480VAC
100
150
100
150
(kA RMS)
600VAC
85
100
85
100
Close and latch rating (kA RMS)
85
100
85
100
Applicable rating plug range
800 - 4000A
800 - 5000A
Minimum enclosure dimension (in.)
32Wx22.5Hx19.5D
32Wx22.5Hx19.5D
Mechanical make-time (ms)
35
35
Mechanical break-time (ms)
34
34
Electric close make-time (ms)
50
50
Electric trip/ UV break-time (ms)
40/73
40/73
Electric trip and reclose interval (ms)
80
80
Mechanical duty cycles (no maint.)
5000
5000
Electrical duty cycles (no maint)
2000
2000
Draw-out breaker efficiency (Watts loss at I
n
)
1100
1100
Fixed-mount breaker efficiency (Watts loss at I
n
)
580
580
Ambient operating temperature (ºC)
-25 to 40
-25 to 40
Weights (Fixed Breaker/DO Breaker/Cradle) lbs.
181/278/306
181/278/306
200/278/306
200/278/306
(Class C)
(Class C)
Ratings for UL489 Listed non-automatic switches
WL frame ratings
Frame size 1
Frame size 2 Frame size 3
800-1200 A
800 - 3000A
4000/5000A
Rating Class
H
L
L
Breaking capacity with external relay (kA RMS)
240VAC
85
100
100
50/60 Hz, instantaneous trip
480VAC
85
100
100
600VAC
65
85
85
Short-time current Icw (kA RMS)
0.4 sec.
65
85
85