Bussmann FRN-R-60 Fuse, 60 A, Dual Class RK5, 250 Vac, 10 sec at 500%

Description

Features

• This Fusetron energy-efficient FRN-R-60 fuse functions as a heavy-duty, class RK5 dual-element time-delay cartridge fuse rated for a continuous current of 60 A at 250 V AC or 125 V DC.
• Featuring an advanced dual-element design, this fuse provides a minimum 10-second time-delay at 500% of its rated current load. This specialized temporal buffer allows heavy industrial motor startups and high-inrush control transformers to engage smoothly without blowing the fuse, preventing annoying, repetitive downtime while maintaining absolute protection against sustained overloads.
• Built to handle severe grid anomalies safely, the fuse delivers an exceptional interrupting capacity rated at 200 kA RMS Symmetrical at 250 V AC, and up to 20 kA at 125 V DC. This massive fault tolerance ensures immediate containment of high-energy short circuits, protecting upstream distribution equipment and sensitive downstream instrumentation from catastrophic arc damage.
• As a certified Class RK5 current-limiting fuse, the internal mechanism reacts within milliseconds during a major short circuit to clear the fault before the current can peak. This rapid clearing speed restricts total destructive let-through energy, shielding fragile downstream motor controllers, starters, and panel components from severe magnetic deformation and thermal stress.
• Measuring a standardized 3 inches (76.2 mm) in length this ferrule-style cartridge features a high-grade, resilient fiberglass tube construction with heavy-duty brass endcaps. This robust physical design resists moisture, thermal tracking, and internal pressure swings, ensuring complete structural integrity under demanding factory conditions.

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