Back
Where to buy Contact us
PHP-A4BY-MSL

A4BY - Class L - Time-Delay

Approvals & Standards
Mersen Self-Certification, UL Listed to Standard 248-10, File E2137
CSA Certified to Standard C22.2, No. 248.10 IEC 269-2-1
DC Tested to UL 248 limits (Mersen Self-Certified)

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.

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.

Key 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

Applications

  • Mains

  • Feeders

  • Circuit Breakers

  • Load centers

  • Panelboards

  • Switchboards

  • Metering Centers

Technical Specifications
Frequency (Hz) 50/60 Hz
Amperage Range 200 to 6000 A
Fuse Class Class L
Speed/Characteristic Time Delay
UL Category Code JDDZ
Back to top