MERSEN FERRAZ A30QS800-4 High-Speed Semiconductor Fuse – 800A, 300V, AR Class, Type 4

he MERSEN FERRAZ A30QS800-4 is a high-speed semiconductor fuse designed for reliable protection of sensitive power electronics. Engineered to interrupt high fault currents quickly, this fuse is ideal for DC drives, UPS systems, inverters, and other semiconductor-based applications where fast response is critical.

Key Features:

• Part Number: A30QS800-4

• Voltage Rating: 300V AC/DC

• Current Rating: 800 Amps

• Class: AR (Ultra-Fast Acting for Semiconductor Protection)

• Type: Type 4 (Blade-style terminals)

• Construction: Advanced materials ensure low I²t values and high interrupting capacity.

• Standards Compliance: Meets UL and IEC standards for semiconductor fuses.

Applications:

• Variable Speed Drives (VSD)

• UPS Systems

• Battery Storage Units

• Power Inverters

• Industrial Control Panels

Manufacturer: MERSEN (formerly Ferraz Shawmut)
Country of Origin: Typically made in Mexico or USA (check specific batch for verification)