UPGRADE YESTERDAYS CIRCUITS TO TODAYS TYPE 2 PROTECTION. Amp-Trap 200; SmartSpot A6D fuses now provide a visual open fuse indicator. With advanced material technology added to the existing product line the A6D provides IEC Type 2 no damage protection to existing mains, feeders, and branch circuits serving motor and non-motor loads. A6D fuses will open fast enough under short circuit conditions for maximum short circuit protection to prevent needless damage to motor starters, switches, and other circuit components, yet are slow enough to provide the long time delay for motor in-rush currents.