ABB 400U03 - 400A, Disconnect Switch

ABB 400U03 is a rugged, high-performance disconnect switch engineered for industrial and commercial electrical systems where safe isolation is mission-critical. With a 400 A current rating, this ABB device delivers dependable disconnection even under load and supports standardized lockout/tagout procedures for safe maintenance and servicing.

Designed for long-term durability, the 400U03 is built to withstand demanding environments, delivering consistent performance over time. It integrates into distribution panels and switchgear to provide a clear, controllable isolation point for feeders and critical equipment.

Key benefits

• 400 A amperage rating for robust feeder isolation in industrial settings
• Lockout/tagout compatibility to ensure safe servicing and compliance with safety protocols
• Dependable disconnection under load, reducing the risk of partial energization during maintenance
• Durable construction designed for longevity in harsh environments
• Backed by ABB's engineering quality and service network

Ideal applications

• Industrial production lines and manufacturing facilities requiring reliable electrical isolation
• Commercial electrical distribution panels and switchgear assemblies
• Systems where safe, verifiable isolation is needed during maintenance or downtime

Specifications

• Amperage Rating: 400 A
• Product Type: Disconnect Switch
• Brand: ABB
• Model: 400U03

Tips for getting the most from the ABB 400U03

Ensure installation by a qualified electrician and follow all local electrical codes. Pair the disconnect switch with appropriate lockout/tagout devices and clearly labeled isolation points to streamline maintenance. Regularly inspect for wear and verify that the disconnection point remains clearly accessible in your electrical panel or switchgear system.