Square D D221N - 30A, Safety Switch

Square D D221N – a 30A safety switch built for dependable on/off isolation and overcurrent protection in demanding industrial and commercial environments.

If you're searching for a compact, maintainable fusible switch that serves as a reliable motor disconnect, this model fits perfectly. The D221N delivers quick, safe isolation for equipment and circuits while providing essential overcurrent protection to guard against faults and equipment damage.

• Model: D221N
• Amperage: 30A
• Primary applications: motor disconnects, panelboards, and branch circuit protection
• Design advantages: compact footprint that fits tight control panels and enables straightforward maintenance
• Protection & safety: robust isolation combined with overcurrent protection to help ensure personnel and equipment safety

What makes the D221N stand out is its practical balance of space efficiency and dependable protection. In environments where downtime is costly, this switch offers clear, accessible maintenance paths and predictable performance, helping you keep control systems up and running.

Ideal for technicians and engineers upgrading motor control centers, panelboard configurations, or branch-circuit protection schemes, the D221N provides a straightforward path to compliant, reliable safety switching without overcomplicating your electrical layout.

Practical tips for implementation: verify enclosure compatibility and mounting clearances, match wiring to the 30A rating, and use proper lockout/tagout procedures during maintenance to maximize safety and uptime.