Bussmann NOS-50 - RK5 Class Fuse 50A (50kA@600V Interrupt Rating)

Bussmann NOS-50 is a low-voltage RK5 class fuse designed for circuit protection in industrial electrical systems. Rated for 600V AC/DC with a 50A current capacity, it features a 50kA interrupting rating at 600V for reliable fault protection. The fuse measures 5-1/2 inches in length with a 2.59-inch diameter, constructed as a single-barrel design weighing 1.25 lb. It meets multiple certifications including UL, CSA, and CE standards under files E4273 and 53787. Typical applications include motor control centers, switchgear, and power distribution panels requiring high-interrupt capacity protection.

Key Features & Specifications

• Type: Low-voltage current-limiting fuse (RK5 class)
• Voltage Rating: 600V AC/DC
• Current Rating: 50A
• Dimensions: 5-1/2" length x 2.59" diameter
• Standards: UL Listed (File E4273), CSA Certified (Class 1421-01), CE
• Applications: Industrial power distribution, motor protection
• AIC rating: 50kA@600V
• Class Rating: RK5
• Barrels: 1
• Weight: 1.25 lb
• Country of Origin: Mexico

Product Identification

• UPC: 05171231050
• GTIN: 00051712310505