NCLR20 - 20Amp Fuse

NCLR20 - 20Amp Fuse

The NCLR20 is a 20-amp, 600 VAC Class R fuse for applications that need time-delay and current-limiting protection. It has a 200 kA interrupting rating at 600 VAC, allowing it to interrupt high fault currents when properly applied safely. Because this is a time-delay fuse, it can tolerate brief current surges that may occur during normal equipment operation while still responding to sustained overcurrent conditions. The NCLR20 uses a traditional cartridge-style design and is non-indicating, so there's no built-in visual indicator to show fuse status. At just 2 inches long and 0.56 inches wide, it's compact, but the specifications matter when determining whether it's right for your equipment. If you're replacing an existing NCLR20, compare the 20A rating, 600 VAC voltage, Class R configuration, 200 kA A.I.C. rating, time-delay characteristic, and dimensions with your system's requirements before installation.

Key Features and Benefits

• 20 amp capacity for equipment and circuits designed around a 20A fuse
• Rated for 600 VAC
• 200 kA A.I.C. at 600 VAC for high available fault-current applications
• Time-delay operation helps prevent unnecessary opening during short, temporary current surges.
• Current-limiting Class R design helps limit fault-current energy.
• Simple cartridge-style construction
• Non-indicating configuration
• Compact 2.0" × 0.56" × 0.56" dimensions

Technical Specifications

• Part Number: NCLR20
  
• Type: NCLR
  
• Fuse Class: Class R
  
• Amperage: 20 A
  
• Voltage: 600 VAC
  
• A.I.C. Rating: 200 kA @ 600 VAC
  
• Style: Cartridge
  
• Operation: Time-Delay
  
• Current Limiting: Yes
  
• Indicator: Non-Indicating
  
• Dimensions:
  • Height: 2.0 in.
  • Width: 0.56 in.
  • Depth: 0.56 in.

Material Compliance and Certifications

The available specifications for the NCLR20 do not include certification or material-compliance details, so don't assume them. If your project requires a particular agency listing or environmental compliance standard, such as UL, CSA, RoHS, or REACH, confirm the appropriate documentation for this specific part before use.

Where It Works Best

The NCLR20 fuse is intended for compatible electrical systems that call for a 20 amp Class R, 600 VAC, time-delay, current-limiting fuse with a 200 kA interrupting rating. It's especially useful in applications where short-circuit current surges are expected during normal operation and an ordinary fast-acting response may not be appropriate.

For replacement work, matching the part number is a good starting point, but it's worth checking the complete specification. Confirm the amperage, voltage, fuse class, interrupting rating, operating characteristics, and physical size against the equipment requirements. With electrical protection components, an exact match matters more than simply finding something that looks the same.