Class L

Amp-Trap A4BY fuses have been the industry's favorite when it comes to protecting service entrance equipment, feeder circuits, and circuit breakers. The A4BY is a 100percent rated device and may be applied at continuous currents up to its ampere rating. A 4-second minimum time delay at 500percent rating allows the A4BY to pass normal current surges and to coordinate with ground fault relays.

Mersen A4BT450 Fuse - 600VAC/500VDC - 450A - Time-Delay - Class L

Mersen A4BT500 Fuse - 600VAC/500VDC - 500A - Time-Delay - Class L

Mersen A4BT600 Fuse - 600VAC/500VDC - 600A - Time-Delay - Class L

Amp-Trap A4BY fuses have been the industry's favorite when it comes to protecting service entrance equipment, feeder circuits, and circuit breakers. The A4BY is a 100percent rated device and may be applied at continuous currents up to its ampere rating. A 4-second minimum time delay at 500percent rating allows the A4BY to pass normal current surges and to coordinate with ground fault relays.

Mersen A4BQ450 - Amp-Trap 2000 A4BQ Fuse - Time-Delay - Class L - 600VAC/500VDC - 450A

Amp-Trap A4BY fuses have been the industry's favorite when it comes to protecting service entrance equipment, feeder circuits, and circuit breakers. The A4BY is a 100percent rated device and may be applied at continuous currents up to its ampere rating. A 4-second minimum time delay at 500percent rating allows the A4BY to pass normal current surges and to coordinate with ground fault relays.

Mersen A4BQ500 - Amp-Trap 2000 A4BQ Fuse - Time-Delay - Class L - 600VAC/500VDC - 500A