Square D 9421-ND1 - Disconnect Switch

The Square D 9421-ND1 Disconnect Switch is a purpose-built solution for serious electrical isolation in demanding industrial and commercial environments. Engineered to perform when it matters most, this device provides safe, reliable disconnection to support everyday maintenance, servicing, and emergency shutdowns.

Why the 9421-ND1 Stands Out

• Safe electrical isolation you can trust during routine maintenance or system changes, helping to minimize risk and protect personnel.
• Lockout/tagout compatibility designed to support proper energy-control procedures, giving technicians a clear, verifiable way to secure circuits during work.
• Dependable disconnection under load so circuits can be opened or isolated without unpredictable arcing or interruptions, even in dynamic operating conditions.
• Durable, industrial-grade construction built to withstand the rigors of commercial and industrial environments, delivering long-term reliability in daily use.
• Trusted brand and model traceability with Square D backing, ensuring consistency with other safety and control equipment in your electrical system.

Ideal Applications

Perfect for facilities managers, electrical contractors, and maintenance teams working in manufacturing plants, processing facilities, large commercial buildings, and distribution centers. Use the 9421-ND1 wherever you need a robust, compliant means to isolate power safely and quickly.

What This Means for Your Operations

With the 9421-ND1, you gain clearer control over energy isolation, reduced downtime during servicing, and a safer work environment for your crew. Its design supports routine lockout/tagout workflows, enabling technicians to verify de-energization before beginning work, then restore power with confidence once tasks are complete.

Specifications at a Glance

Product Type: Disconnect Switch
Brand: Square D
Model: 9421-ND1

Choose the Square D 9421-ND1 Disconnect Switch for a reliable, purpose-built solution that prioritizes safety, compliance, and long-term durability in demanding electrical installations.