Mersen A25X20 - Semiconductor Fuse 20A 300V (50kA AIC)

Mersen A25X20 is a low-voltage semiconductor protection fuse from the Amp-Trap family, designed for safeguarding sensitive electronic equipment against short-circuit and overload conditions. It features a 300V AC/DC voltage rating with a 20A current capacity and a high interrupting rating of 50kA at 300V for reliable circuit protection. The compact cylindrical design measures 0.56" in diameter with a single-barrel construction, meeting stringent industry standards for semiconductor applications. UL-recognized and built for industrial environments, this Class J fuse is commonly used in variable frequency drives, rectifiers, and power conversion equipment requiring precise overcurrent protection.

Key Features & Specifications

• Type: A25X low-voltage current-limiting fuse with silver-sand construction
• Voltage Rating: 300V AC/DC
• Current Rating: 20A
• Diameter: 0.56 inches (14.2mm)
• Class Rating: Semiconductor (Class J)
• AIC Rating: 50kA at 300V
• Barrels: 1
• Standards: UL 248-10 recognized
• Applications: VFDs, rectifiers, UPS systems, power converters