A4BY Class L
Count on the high interrupting rating of our most widely
used class L fuse
When it comes to protecting service entrance equipment, feeder circuits, and
circuit breakers, A4BY fuses are the industry’s favorite. The A4BY is a 100% rated
device and may be applied at continuous currents up to its ampere rating. A 4-second
minimum time-delay at 500% rating allows the A4BY to pass normal current surges
and to coordinate with ground fault relays.
Features/Benefits:
•• Unique dimensions prevent replacement by other fuse classes
•• Blade stamped catalog numbers for permanent identification
•• Glass melamine body and plated terminals provide superior reliability in
harsh environments
Highlights:
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Current-limiting
4-second time-delay
DC ratings
Uniform characteristics in all
ampere ratings
Applications:
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Ratings:
Mains, feeders
Volts
: 600VAC
Circuit breakers
: 300VDC
Load centers
Amps : 200 to 6,000A (AC)
Panelboards
: 200 to 2,500A (DC)
Switchboards
IR
: 200kA.I.R. AC
Metering centers
: 100kA I.R. DC
Approvals:
•• UL listed to standard 248-10
(601-6000A) File E2137
•• CSA certified to standard C22.2
No. 248.10 (601-6000A)
•• Self-certified for DC per UL248
(601-6000A)
B10
