Littelfuse LDC400 400A Class L Fast-Acting Fuse – Bolt-In – 600VAC/DC

The Littelfuse LDC400 POWR-PRO® Class L fuse is a fast-acting, high-performance fuse designed for dual AC and DC protection in industrial and transportation power systems. As part of the LDC series, it is the first UL Listed Class L fuse rated for both 600V AC and DC, eliminating the risk of installing AC-only fuses in DC applications. It is suitable for demanding environments such as crane rail systems, mass transit infrastructure, and heavy industrial distribution networks.

Voltage and Rating

• Current Rating: 400 Amps
• Voltage Rating: 600 Volts AC
• DC Voltage Rating: 600 Volts DC
• Interrupting Rating: 200 kA at 600 VAC
• Interrupting Rating: 50 kA at 600 VDC

Key Specifications

• Fuse Type: Fast-Acting
• Fuse Class: Class L
• Mounting Type: Bolt-In
• Series: LDC POWR-PRO®
• Family Style: Powr-Pro Fuse
• Application: AC/DC industrial power distribution

Technical Specifications

• Opening Characteristic: Fast-Acting
• Current Limiting: Yes
• Interrupt Amperage: 200,000 Amps
• DC Capability: Tested for extended time constant operation
• Construction: Heavy-duty industrial fuse body
• Safety Feature: Prevents AC-only fuse use in DC circuits

Product Data

• Manufacturer: Littelfuse
• Model Number: LDC400
• Series: LDC POWR-PRO®

Features

• First UL Listed 600V AC/DC Class L fuse series
• High interrupting capacity for severe fault conditions
• Designed for crane rail, transit, and heavy industrial systems
• Strong current-limiting protection for equipment safety
• Reliable performance in both AC and DC applications

Returns are easy

You may return items within 30 days of delivery for a refund.

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