Bussmann FRN-R-60 Fuse

The Bussmann FRN-R-60 Fuse is a professional-grade 60 Amp Fusetron designed for high-performance circuit protection in demanding industrial and commercial environments. Featuring a dual-element construction, this Class RK5 fuse provides essential time-delay characteristics, allowing it to handle temporary motor inrush currents and surges without nuisance tripping. Rated for 250Vac and 125Vdc, it offers a massive 200kA interrupting rating (RMS Symmetrical), making it a reliable choice for motor control centers, combination starters, and machinery disconnects. This current-limiting fuse helps prevent motor burnout from overloads and single-phasing, ensuring system longevity and reducing downtime. Its rejection-style design ensures compatibility with standard Class R fuse blocks, maintaining the integrity of your safety installations. By providing 10 seconds of minimum time-delay at 500% of the rated current, the FRN-R-60 allows for closer sizing to the motor's full-load amps (FLA), improving overall protection levels for HVACR and industrial equipment.

• Enhanced Motor Protection: Prevents motor burnout caused by overloads and single-phasing on three-phase systems.
• Reduced Nuisance Tripping: The dual-element time-delay accommodates heavy startup loads without compromising circuit safety.
• High Interrupting Capacity: Rated for up to 200,000 Amps at 250Vac to safely clear major ground faults and short circuits.
• Current-Limiting Performance: Restricts the total energy flow during a fault to protect sensitive downstream components.
• Energy Efficient: Low resistance design minimizes power loss while maintaining stable performance in power panelboards.

What is the difference between FRN-R and FRS-R fuses?
The primary difference is the voltage rating. FRN-R fuses, like this 60A model, are rated for up to 250Vac, whereas FRS-R fuses are rated for up to 600Vac. Always verify your system voltage before installation.

Can I use a Class RK5 fuse in a standard fuse holder?
Yes, Class RK5 fuses will fit into standard 250V fuse clips. However, they are specifically designed with a rejection groove to fit into Class R fuse blocks, which prevents the accidental installation of non-rejection fuses with lower interrupting ratings.

When should I choose a time-delay fuse over a fast-acting fuse?
A time-delay fuse is essential for inductive loads such as motors and transformers that pull a high initial current. If you use a fast-acting fuse in these applications, it will likely blow during startup even if no fault exists.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.