Square D D221N - 30A, 120/240V, General-Duty, Safety Switch

Meet the Square D D221N 30A Safety Switch — a robust, general-duty disconnect designed to deliver dependable on/off isolation and overcurrent protection in demanding industrial and commercial settings. With a 30-amp capacity and a 120/240-volt rating, this switch keeps motor-driven equipment, panelboards, and branch circuits safely isolated when you need it most.

Key capabilities

• Compact, maintainable design — engineered for spaces where panel real estate matters, the D221N keeps wiring organized and simplifies routine service or replacement.
• Reliable isolation — provides a clean, dependable disconnect to safely de-energize equipment during maintenance, reducing downtime and enhancing operator safety.
• General-duty versatility — an ideal solution for motor disconnects, panelboards, and branch-circuit protection in smaller to mid-size installations requiring a compact safety switch.
• Clear protection for 30A circuits — supports overcurrent protection for circuits up to 30A at 120/240V, helping prevent damage from faults and surges.

Who is this for? If you manage equipment rooms, service areas, or machine controls where space is at a premium and dependable isolation is essential, the D221N is designed to fit your needs. It integrates smoothly with standard panelboard configurations and supports safer, more efficient electrical maintenance routines.

Use cases and scenarios

• Motor disconnects for small to mid-size motors in conveyors, pumps, fans, and other machinery
• Branch-circuit protection in control panels and switchgear where quick, reliable isolation is required
• General-purpose safety switching in retrofit projects or new installations with limited space

In short, the Square D D221N 30A 120/240V General-Duty Safety Switch delivers a dependable, space-conscious solution for safe isolation and circuit protection — helping you keep equipment running smoothly while prioritizing safety and reliability.