Square D JJN400 - Class T Fuse 400A @ 300V (489mm Length)

Square D JJN400 is a Class T low-voltage fuse designed for high-current circuit protection in industrial applications. It features a 300V AC voltage rating and 400A current interruption capacity, housed in a durable 19.25-inch (489 mm) long package weighing 1 lb. The fuse meets UL/CSA standards for Class T fuses and is commonly used in switchgear, motor control centers, and power distribution systems requiring fast-acting protection.

Key Features & Specifications

• Type: Class T fast-acting fuse with JJN configuration
• Voltage Rating: 300V AC
• Current Rating: 400A
• Dimensions: 19.25 in (489 mm) length
• Standards: UL/CSA Class T compliant
• Applications: Industrial power distribution, motor protection
• Weight: 1 lb
• Country of Origin: United States

Product Identification

• UPC: 785901119067
• GTIN: 00785901119067