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: 4 Sec Time Delay (at 500 Percent Rated Load)
Voltage Rating: 600 VAC, 300 VDC
Current Rating: 1800 Ampere
Interrupting Rating: 200 Kiloampere (AC), 100 Kiloampere (DC)
Terminal Type: Blade
Diameter: 3-1/2 Inch
Length: 10-3/4 Inch
Approval: UL 248/248-10, CSA C22.2