DiversiTech, 7-CRNR60, Dual Element Fuse, 60 A, 250 V, 200,000 A

DiversiTech 7-CRNR60 – 60 Amp Class RK5 Time Delay Fuse

The DiversiTech 7-CRNR60 is a 60 Amp, dual-element time delay fuse designed for overcurrent protection in HVAC and industrial motor circuits. Classified under UL Class RK5, it provides delayed response to momentary inrush currents while offering rapid fault clearing under high short-circuit conditions. Its interrupt rating of 200,000 A at 250 VAC makes it suitable for high fault current applications across commercial and mechanical systems.

Application and Performance

Intended for branch circuit protection in motor-driven equipment, the 7-CRNR60 helps prevent nuisance openings during motor starts and other temporary overloads. It is compatible with standard RK5 fuse holders and provides effective protection where coordination with contactors and overloads is required. The fuse is constructed with precision elements for stable arc suppression and consistent clearing characteristics under varying load profiles.

Product Features

• ✅ Dual-Element Design – Supports sustained motor startup currents without opening under normal overload conditions.
• ✅ Interrupt Rating: 200,000 AIC at 250 VAC for reliable high fault protection.
• ✅ UL Listed, CSA Certified – Meets U.S. and Canadian safety standards for industrial fusing applications.
• ✅ RK5 Classification – Lower I²t values compared to general-purpose fuses, improving protection and limiting let-through energy.
• ✅ Current Rating: 60 A – Suitable for mid-range equipment, motors, and control panel circuits.

Technical Specifications

• Model: 7-CRNR60
• Amperage: 60 A
• Voltage Rating: 250 VAC
• Class: RK5
• Type: Dual-element time delay fuse
• Interrupting Rating: 200,000 A
• Standards: UL 248, CSA certified

Installation Considerations

Installation of the 7-CRNR60 should be conducted by a qualified electrician in accordance with NEC Article 240 and local code requirements. It fits standard RK5 fuse blocks or disconnects rated for 250V operation. Ensure torque specifications are followed when terminating conductors to prevent thermal stress and maintain proper contact resistance.

Professional Use Case

This fuse is commonly specified in compressor circuits, control panels, and mechanical distribution cabinets where branch-level protection is required. Its time-delay characteristic ensures proper coordination with magnetic starters, motor overload relays, and contactors while maintaining short-circuit safety compliance.