Overview Product Specifications - AJT90 - Mersen / Ferraz Shawmut Low Voltage Fuse Part Number: AJT90 Manufacturer: Mersen / Ferraz Shawmut Family: Amp-Trap 2000 Amp: 90 Volt: 600 Category: Fuses Type: AJT AIC Ratings: 200kA@600V Standards Product Description - AJT90 - Mersen / Ferraz Shawmut Low Voltage Fuse Amp-Trap 2000® AJT fuses provide non-indication as well as a SmartSpot visual open fuse indicator. With advanced material technology the AJT fuse provides IEC Type 2 No Damage protection to main, feeder, and branch circuits, for all types of loads — yet, they require only half the mounting space needed for 600VAC Class RK fuses. AJT’s time-delay characteristics are ideal for handling typical motor and transformer inrush currents, while also providing superior current-limiting ability.