WL Circuit Breaker selection and application guide
38
Low Voltage Power Circuit Breaker
Ratings for UL1066 Listed (ANSI C37) breakers
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WL frame ratings – Frame size 2 800A 1600A
Rating Group N S H L F N S H L F
Interrupting current frame Ics (kAIR RMS) 50/60 Hz 254VAC 50 65 85 100 200 50 65 85 100 200
508VAC 50 65 85 100 200 50 65 85 100 200
635VAC 50 65 65 85 200 50 65 65 85 200
Short-time current Icw (kA RMS) 0.5 sec. 50 65 65 85 20 50 65 65 85 20
Extended instantaneous protection rating (kA RMS) 508VAC 50 65 85 100 200 50 65 85 100 200
635VAC 50 65 65 85 200 50 65 65 85 200
Close and latch rating (kA RMS) 50 65 65 85 75
50 65 65 85 75
Applicable rating plug range 200 - 800A 200 - 1600A
IEC 60-947-1 impulse withstand rating 8 primary /2.5 secondary connection 8 primary /2.5 secondary connection
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.) 15,000 15,000
Electrical duty cycles (no maint) 15,000 15,000
Draw-out breaker efficiency (Watts loss at rated I
n) 85 320
Draw-out fused breaker efficiency (Watts loss at rated I
n) Consult factory Consult factory
Ambient operating temperature (ºC) w/o LCD -25 to 70 -25 to 70
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Interrupt rating is 200kA based on fuse rating.
WL frame ratings – Frame size 2 2000A 3200A
Rating Group S H L F S H L
Interrupting current frame Ics 254VAC 65 85 100 200 65 85 100
(kAIR RMS) 50/60 Hz 508VAC 65 85 100 200 65 85 100
635VAC 65 65 85 200 65 65 85
Short-time current Icw (kA RMS) 0.5 sec. 65 65 85 20 65 65 85
Extended instantaneous protection 508VAC 65 85 100 200 65 85 100
rating (kA RMS) 635VAC 65 65 85 200 65 65 85
Close and latch rating (kA RMS) 65 65 85 75 65 65 85
Applicable rating plug range 200 - 2000A 200 - 3200A
IEC 60-847-1 impulse withstand rating (KV)
8 primary /2.5 secondary connection 8 primary /2.5 secondary connection
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.) 15,000 15,000
Electrical duty cycles (no maint) 15,000 15,000
Draw-out breaker efficiency (Watts loss at rated I
n) 700 1650
Draw-out fused breaker efficiency (Watts loss at rated I
n) Consult factory Consult factory
Ambient operating temperature (ºC) w/o LCD -25 to 70 -25 to 70
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