Square D 9422ART21 - 1000A, Disconnect Switch

Designed for demanding industrial and commercial environments, the Square D 9422ART21 1000A Disconnect Switch delivers safe, reliable electrical isolation when it matters most. Engineered to support proper lockout/tagout (LOTO) procedures, this high-current disconnect switch provides a clear, definitive disconnection under load, helping maintenance teams work confidently and efficiently. Key advantages of the Square D 9422ART21:

• 1000A amperage rating enables safe isolation of large feeders and motor circuits without compromise, suitable for heavy-duty power distribution applications.
• Lockout/tagout compatibility designed to facilitate compliant safety procedures, reducing the risk of accidental energization during service and maintenance.
• Dependable disconnection under load ensures dependable operation when power needs to be interrupted for servicing, minimizing downtime and protecting personnel.
• Rugged, durable construction built to endure busy industrial environments, delivering long-term performance in challenging conditions.
• Trusted Square D branding reflects a long-standing reputation for reliable electrical distribution equipment and consistent field performance.

Who benefits most

• Maintenance technicians and electrical engineers working in manufacturing facilities, data centers, warehouses, and other commercial settings with high-current equipment.
• Facilities managers seeking robust, code-aligned safety solutions for power isolation and routine servicing.
• Electrical contractors specifying reliable, durable disconnecting solutions for panelboards and switchgear installations.

Practical use cases

• Isolating large motor feeders and heavy equipment during planned maintenance or upgrades.
• Providing a clear, safe disconnect point in service entrances or distribution panels to support routine LOTO procedures.
• Emergency isolation in facilities where rapid, definitive power cutoffs are essential for safety and uptime protection.

Why choose the Square D 9422ART21 This disconnect switch stands apart by combining a high-current capability with a safety-forward design that supports essential lockout/tagout practices, all while delivering reliable, durable performance over years of service. If your operation requires a dependable 1000A disconnect that prioritizes safe isolation and maintenance efficiency, the 9422ART21 is purpose-built to meet and exceed those needs. In short, the Square D 9422ART21 is a purpose-built solution for serious power environments: high current, safe isolation, and enduring reliability wrapped in a trusted brand you can count on for years of trouble-free operation.