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.

Specifications:

Type: Class L
Characteristics: Time Delay
Voltage Rating: 600 Volt AC, 300 Volt DC
Current Rating: 1200 Amp
Interrupting Rating: 200 Kiloamp (AC), 100 Kiloamp (DC)
Terminal Type: Blade
Diameter: 2-1/2 Inch
Length: 10-3/4 Inch
Approval: UL 248/248-10, CSA C22.2