Square D - 400A, Disconnect Switch

Meet the Square D 400A Disconnect Switch — a purpose-built solution for safe electrical isolation in demanding industrial and commercial settings. This high-performance disconnect is engineered to deliver dependable disconnection under load, supporting rigorous lockout/tagout procedures and helping facilities minimize downtime while maximizing safety and reliability.

Why this disconnect switch stands out

• 400A amperage rating provides robust capacity for heavy-duty feeders and critical circuits.
• Safe isolation under load ensures you can de-energize with confidence when maintenance or servicing is required.
• Lockout/tagout compatibility aligns with established safety protocols, simplifying compliance and securing energy sources during work.
• Durable, long-term performance built for the demands of industrial and commercial environments, reducing the need for frequent replacements.
• Trusted brand from Square D, a name associated with reliable electrical distribution and protective switching equipment.

Ideal use cases

• Service entrances and main feeders in commercial facilities that require clear, immediate isolation.
• Manufacturing floors and industrial plants where maintenance windows demand reliable disconnection under load.
• Electrical rooms and utility spaces that rely on safe, verifiable lockout/tagout procedures.
• Systems requiring straightforward, durable disconnects to support ongoing safety audits and compliance checks.

How it supports safety and efficiency

The Square D 400A Disconnect Switch is designed to streamline safety workflows without compromising performance. By providing a decisive path to isolate power, it helps technicians validate de-energization before work begins, reducing risk and enhancing uptime. Its rugged construction stands up to the rigors of daily operation, while its design choices support quick inspections and reliable operation over years of service.

Durability and reliability you can rely on

Engineered for long-term durability in harsh environments, this disconnect switch maintains consistent performance even in demanding industrial or commercial installations. The combination of a solid enclosure and proven switching mechanism minimizes wear, supports repeated operation, and offers dependable isolation when it matters most.

Specifications at a glance

• Amperage Rating: 400A
• Product Type: Disconnect Switch
• Brand: Square D

Practical guidance for deployment

To maximize safety and uptime, install the Square D 400A Disconnect Switch by qualified electrical professionals in accordance with applicable codes and standards. Leverage its lockout/tagout compatibility to maintain a secure work environment during maintenance and testing, and schedule periodic inspections to verify clean isolation paths and robust enclosure integrity. This disconnect switch is ideal for facilities teams seeking a reliable, code-compliant solution that supports safe, efficient electrical maintenance and operation.