ECNR30 - 30 Amp Fuse

ECNR30 - 30 Amp Fuse

The Eaton ECNR30 is a reliable 30‑amp, dual‑element RK5 time-delay fuse designed to deliver dependable overcurrent protection for motors, transformers, and other equipment in both industrial and commercial settings. With the ability to handle temporary inrush currents — such as those common when motors start, or transformers energize — this fuse helps prevent annoying nuisance trips while still guarding against dangerous overloads and fault conditions. Its dual-element design ensures fast response to serious short circuits without sacrificing tolerance to normal startup surges. Engineered with a 200 kAIC interrupting rating, the ECNR30 stands ready to protect your circuits even under demanding fault-current events. Plus, with straightforward ferrule‑end connections and standard voltage ratings, installation is simple and versatile across a variety of electrical systems.

Key Features and Benefits

• Dual‑Element Time‑Delay Design: Allows you to size the fuse closer to the actual running current of motors and transformers, which reduces costs and still protects equipment effectively.
• High Interrupting Capacity: A 200 kAIC rating ensures the fuse can safely clear high fault currents, offering dependable protection under stress.
• Versatile Voltage Compatibility: Rated for up to 250 V AC and 125 V DC, enabling use across many common commercial and industrial electrical systems.
• Simple Installation: Ferrule‑end terminals make for easy, secure connections, minimizing hassle during setup or maintenance.
• Balanced Protection: The time-delay feature tolerates harmless inrush surges while instantly reacting to real overloads or short circuits — a trustworthy balance of flexibility and safety.

Technical Specifications

• Amperage Rating: 30 Amp
• Voltage Rating: 250 V AC / 125 V DC
• Interrupting Capacity: 200 kAIC
• Response Time: ~8 seconds at 500% of rated current
• Fuse Class: RK5
• Fuse Construction: Dual-element, time-delay, non‑indicating
• Dimensions:
  • Length: 2.00 in (approx. 50.8 mm)
  • Diameter: 0.56 in (approx. 14.2 mm)
• Weight: ~0.5 lb (approx. 0.23 kg)

Material Compliance and Certifications

• CE Marked
• UL 248‑12 Listed
• CSA C22.2 No. 248.12 Certified

These certifications confirm that the ECNR30 meets rigorous international and North American safety and performance standards — giving you confidence in its compliance and safe application in regulated environments.

Where It Works Best

• Motor Branch Circuits: Chauffeurs, compressors, conveyors — any motor circuit with startup surges benefits from a time-delay fuse.
• Transformers: Provides dependable protection from overloads and short circuits without nuisance trips during energizing.
• Lighting and Heating Circuits: Offers reliable overcurrent protection for lighting banks, heaters, or resistive loads in commercial facilities.
• General Electrical Systems: From distribution panels to auxiliary circuits, the ECNR30 protects a broad array of electrical applications with steady, dependable performance.