Description

The ABB 3AUA0000090404 is a high-speed semiconductor fuse, also identified by the manufacturer part number 170M5388 (PC72UD13C250T). This fuse is designed for the protection of power semiconductors, such as those found in variable frequency drives, soft starters, and other industrial power conversion equipment. It provides reliable overcurrent protection in demanding electrical environments where rapid clearing times are required to prevent damage to sensitive power electronics.

Features

• High-speed performance for semiconductor protection
• Voltage rating: 1250V
• Current rating: 250A
• Robust construction suitable for industrial power systems
• Direct replacement for specified ABB drive protection applications

Technical Specifications

Installation Guidelines

• Ensure the power supply to the equipment is fully isolated and locked out before attempting to replace the fuse.
• Verify that the fuse current and voltage ratings match the original component specifications exactly.
• Check for signs of overheating or damage on the fuse mounting clips or busbars before installation.
• Ensure proper torque is applied to the mounting bolts to prevent high-resistance connections, which can lead to premature fuse failure.
• Always replace fuses in a set if the equipment design requires balanced protection across phases.

FAQ

What is the primary application for this fuse?

This is a semiconductor fuse used primarily for protecting power electronic components within ABB drives and power conversion systems. It is not intended for general-purpose branch circuit protection.

Can I replace this with a standard industrial fuse?

No. Semiconductor fuses have specific I2t characteristics required to protect sensitive power components. Using a standard fuse may result in damage to the drive or power module during a fault condition.