Ferraz Shawmut A50QS600-4 Semiconductor Fuse Amp-Trap Form 101

Description:

The Ferraz Shawmut A50QS600-4 Semiconductor Fuse is a high-speed Amp-Trap® Form 101 fuse designed to provide superior overcurrent and short-circuit protection for power semiconductors and sensitive electronic equipment. Commonly installed in AC/DC motor drives, variable frequency drives (VFDs), uninterruptible power supplies (UPS), inverters, rectifiers, and industrial power conversion systems where rapid fault clearing is essential. Maintenance technicians and system integrators use this fuse for equipment repair, retrofit, expansion, and replacement to protect semiconductor devices, improve system reliability, and minimize production downtime. The A50QS600-4 is rated at 600 Amps, 500 VAC/DC, with a 200 kA interrupting rating and features low I²t for maximum semiconductor protection.

Applications:

The Ferraz Shawmut A50QS600-4 Semiconductor Fuse is used to protect SCRs, diodes, IGBTs, MOSFETs, thyristors, and other power semiconductor devices from destructive overcurrent conditions. It is commonly utilized in motor drives, UPS systems, inverters, converters, battery chargers, welding equipment, induction heating equipment, and industrial power control systems requiring high-speed semiconductor protection.

Technical Specifications:

• Manufacturer: Ferraz Shawmut (Now Mersen)
• Part Number: A50QS600-4
• Product Type: High-Speed Semiconductor Fuse
• Series: Amp-Trap® A50QS Form 101
• Ampere Rating: 600 A
• Rated Voltage: 500 VAC / 500 VDC
• Interrupting Rating: 200 kA AC / 100 kA DC
• Fuse Type: High-Speed, Current-Limiting
• Mounting Style: Blade (Bolt-In)
• Frequency: 50/60 Hz
• Standards: UL Recognized, CSA Certified
• Application: Semiconductor Protection for Drives, UPS, Inverters, and Rectifiers

Common Replacements:

• Bussmann FWH-600A
• Littelfuse L50S600
• Mersen A70QS600-4