Square D H325N - 400A, Heavy Duty Safety Switch

Designed for industrial and commercial facilities that demand safe, reliable electrical isolation, the Square D H325N 400A Heavy Duty Safety Switch delivers a robust main disconnect you can trust. With a 400-amp rating, it handles demanding loads and provides dependable disconnection when service or maintenance is required. Its construction is built to support proper lockout/tagout procedures, helping crews meet safety standards and minimize downtime.

Key advantages

• 400A amperage rating designed to manage large motors and feeders without compromising safety or performance.
• Heavy-duty safety switch construction engineered for reliability in harsh industrial and commercial environments.
• Lockout/tagout compatibility to simplify compliance and improve workplace safety during maintenance.
• Dependable disconnection under load ensures circuits are safely opened even when equipment is energized.
• Long-term durability built to withstand demanding daily use, reducing replacement and maintenance costs over time.

Ideal applications

• Main isolation point for large electrical feeders in manufacturing facilities
• Service disconnect for commercial buildings with high electrical demand
• Safety interlock point during maintenance on heavy equipment and motor-driven systems

Practical tips for getting the most from your H325N

Plan installation with qualified electrical personnel to ensure correct wiring and secure mounting. Pair the H325N with standard lockout/tagout procedures to streamline safety compliance and minimize downtime during service windows. Consider keeping a spare unit on hand for rapid replacement during scheduled maintenance to maintain uninterrupted operations.

Square D H325N — 400A Heavy Duty Safety Switch provides the robust, safe isolation your critical loads require, delivering long-term reliability when it matters most.