Bussmann FRS-R-40 Dual Class RK5 Non-Indicating Fuse 40 A 600 Vac 200 kAIC 11.63 Inch Length

Description

Features

• functions as a heavy-duty Class RK5 dual-element time-delay cartridge fuse rated for a continuous current of 40 A at 600 V AC or 250 V DC. It is engineered to provide superior overcurrent protection for inductive 3-phase motor branches, electrical mains, and industrial power circuits, combining high-voltage short-circuit clearing and thermal overload defense in a single cartridge.
• Featuring an advanced dual-element, slow-blow design, this fuse provides a minimum 10-second time-delay threshold 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 disruptive operational downtime while maintaining strict safety protection against sustained overloads.
• Built to handle severe grid anomalies safely, the fuse delivers an exceptional ultimate interrupting capacity (IR) rated at 200 kA RMS Symmetrical at 600 V AC, and up to 20 kA at 250 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.

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Specifications