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 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.
- Applications
- Features
| Mains Feeders Circuit Breakers Load centers Panelboards Switchboards Metering Centers |
| 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 |
| 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 |
| Uniform characteristics in all ampere ratings |
| Silver-plated copper contact |
| North American power fuses |