For optimal levels of safety and protection, our Amp-Trap 2000 A4BQ fuses are the best choice for applications over 600 amperes. They provide:

Best degree of arc energy mitigation. Lower current-limiting thresholds and let-thru energies are the key features of the A4BQ line. When applied properly for expected arc fault currents, incident energies at working distances of 18" can be reduced to category 0 PPE levels for fuses up to 1600A. For proper application of larger A4BQ ampere ratings, consult technical services. Easier system coordination. When you combine A4BQ fuses with other Amp-Trap 2000 fuses, such as the AJT Class J or A6D Class RK1, you can ensure a fully coordinated system by sizing upstream fuses at only twice the ampere rating.

• Easy to downsize the ampere rating. Feeder fuses often have larger ampere ratings than are needed. Downsizing should be considered when it would lead to substantial energy reduction.
  
  
• Reliable performance. Nuisance openings can expose workers to energized components. The A4BQ's time-delay feature (for overloads) and short circuit design allow for temporary low-level overcurrents like motor starting currents and inrushes without opening.
  
  

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