Square D D224N - 200A, 240V, Fusible, Safety Switch

Square D D224N is a rugged 200 A, 240 V fusible safety switch engineered for real-world industrial and commercial use. It delivers reliable on/off isolation paired with precise overcurrent protection in a compact, maintainable package—making it a smart choice for demanding motor loads and critical circuits where space and downtime matter.

What sets the D224N apart

• Compact, maintainable design fits tight panelboards and control cabinets while keeping service and fuse replacement straightforward.
• 200 A current rating at 240 V handles substantial motor starts and branch circuits without sacrificing protection or performance.
• Fusible protection provides coordinated overcurrent protection in a single enclosure, helping limit equipment damage and electrical stress on downstream wiring.
• Reliable isolation ensures safe servicing, with a clearly defined disconnect path to prevent accidental energization during maintenance.
• Versatile application ideal for motor disconnects, panelboard feeders, and branch circuit protection across industrial and commercial environments.

Ideal use cases

• Motor-driven equipment such as pumps, fans, conveyors, and compressors requiring a dependable disconnect with integrated protection.
• Panelboard installations where a compact, fusible safety switch is needed to protect upstream feeders and downstream loads.
• Facilities and equipment rooms with space constraints that still demand robust isolation and quick fuse replacement when needed.

Performance you can trust

The D224N combines rugged construction with practical maintenance benefits. By integrating fuses for overcurrent protection, it helps prevent nuisance trips and provides clear, target protection for motor circuits and branch circuits—reducing the risk of collateral damage to equipment and wiring in the event of a fault.

Maintenance and best practices

For long-term reliability, replace fuses with the same amperage rating after an event, keep the enclosure doors closed during operation, and schedule periodic inspections of connections and enclosure integrity to maintain a tight, corrosion-resistant seal in harsh environments.

Technical snapshot

• D224N
• Amperage: 200 A
• Voltage: 240 V
• Protection: Fusible safety switch