The Schneider Electric Square D LPJ450SP is a Class J fuse designed for robust overcurrent protection in industrial electrical systems. This dual-element fuse, rated for 450 Amperes and 600 Volts, incorporates a time-delay feature that provides a minimum of 10 seconds of delay at 500% of its rated current. This characteristic is crucial for preventing nuisance tripping during temporary motor start-ups or other transient overloads, while still offering rapid response to dangerous short-circuit conditions.

Technical details

• Fuse Type: Class J
• Voltage Rating: 600V AC
• Current Rating: 450A
• Series: LPJ
• Element Design: Dual Element (Time Delay & Current Limiting)
• Time Delay Characteristic: Minimum 10 seconds at 500% of rated current
• Interrupting Rating: 200,000A at 600V AC (verify with manufacturer datasheet)
• Body Material: Fiberglass (verify with manufacturer datasheet)

Applications & compatibility

This Class J fuse is commonly employed in motor control circuits, switchboards, and panelboards where reliable protection against both short circuits and sustained overloads is paramount. Its dual-element design makes it particularly suitable for applications involving motors, transformers, and other inductive loads that experience temporary inrush currents. The LPJ450SP is designed to integrate seamlessly into standard Class J fuse holders and distribution equipment.

Available from Industrial Automation Co as new, refurbished, or surplus stock, backed by a 2-year warranty with same-day shipping on in-stock items. Request a quote for the Schneider Electric Square D LPJ450SP or contact our technical team for cross-reference assistance with compatible Class J fuse components.