Square D D323N - 100A, Disconnect Switch

The Square D D323N 100A Disconnect Switch is built for industrial and commercial environments where safe, reliable electrical isolation is non-negotiable. Designed to support lockout/tagout procedures and deliver a dependable disconnection under load, this switch combines steady performance with the durability needed for year-after-year service.

Why the D323N stands out

• 100A amperage rating provides solid protection for medium-load circuits and equipment feeders, helping prevent unexpected energization during maintenance.
• Reliable under-load isolation so you can disconnect equipment with confidence without introducing uncontrolled surge or arc risks.
• Robust, long-term durability tailored for the rigors of industrial and commercial settings, reducing the need for frequent replacements.
• LO/TO compatibility designed to align with standard lockout/tagout safety programs, simplifying compliance and safeguarding workers during service windows.
• Versatile installation for controlled environments suitable for integration into control panels and service disconnect points where a dedicated isolation switch is required.

Ideal applications

• Motor feeders and process lines in manufacturing facilities, where a reliable disconnect is essential for planned maintenance.
• Service disconnects for industrial equipment, HVAC systems, conveyors, pumps, and other powered machinery.
• Maintenance shutdowns and safety audits that rely on a definitive, verifiable isolation point.

What you gain with this Square D disconnect

• —clear electrical isolation ensures teams can work without live circuits nearby.
• — durable construction minimizes downtime and replacement cycles in demanding environments.
• Compliance-friendly design— supports lockout/tagout processes, helping you meet safety regulations and reduce risk.

Specifications

• Amperage rating: 100A
• Product type: Disconnect Switch
• Brand: Square D
• Model: D323N

Maintenance and best practices

• Periodically inspect terminals for signs of wear, corrosion, or loose connections, and retorque as specified by maintenance protocols.
• Verify lockout/tagout procedures are in place and that authorized personnel have access to the disconnect for safe servicing.
• Store and handle the switch in accordance with facility electrical standards to preserve long-term reliability.