HD221SN - 30A, 240V, 2-Pole, Fusible, Disconnect Switch

The HD221SN 30A, 240V, 2-Pole Fusible Disconnect Switch is built for hard-wearing industrial and commercial environments where reliable power isolation and overcurrent protection matter most. This compact, maintainable disconnect delivers a clean, visible break in the circuit while safeguarding equipment from faults and surges.

• Model: HD221SN
• Amperage: 30A
• Voltage: 240V
• Poles: 2-Pole
• Fusible: Yes — integrates a fusible element for overcurrent protection

Why the HD221SN stands out

Unlike simple on/off switches, the HD221SN combines isolation with built-in overcurrent protection. The two-pole design ensures both hot lines are simultaneously disconnected, reducing arc exposure and improving safety during maintenance. The fusible element provides selective, branch-circuit protection, making it an excellent choice when you need dependable safeguarding for motors and other inductive loads.

Ideal use cases

• Motor disconnects in manufacturing lines and processing equipment
• Protection and isolation for panelboards and distribution enclosures
• Branch circuit protection for machines and control systems operating at 240V

Practical benefits and outcomes

• Reliable isolation: A clear, safe off position ensures maintenance teams can work with confidence.
• Targeted protection: The fusible element guards circuits against short circuits and overloads, helping prevent damage to connected equipment.
• Simple maintenance: When a fault occurs, replace the fuse element and restore protection quickly without replacing the entire switch.
• Space-efficient: Compact 2-Pole design fits neatly into panelboards and control enclosures where space is at a premium.
• Versatile 240V operation: Designed for standard industrial and commercial electrical systems commonly found in workshops, facilities, and machinery

Installation and best-use guidance

Install the HD221SN in locations where fast, decisive isolation is required, and pair it with appropriately rated fuses for the protected load. Its 2-Pole configuration ensures simultaneous disconnection of both lines, supporting safe lockout/tagout practices during service or repair. Ideal for environments that demand rugged reliability, straightforward maintenance, and predictable protection for motor-driven equipment.

Compared to non-fused disconnect options

Fused disconnect switches like the HD221SN provide an integrated layer of overcurrent protection, reducing the need for separate protection devices. This consolidation can simplify panels, streamline wiring, and offer quicker fault response for motor and branch circuit applications.

With the HD221SN, you get a purpose-built solution that aligns with practical industrial needs: dependable isolation, robust overcurrent protection, and a design that makes maintenance and replacement straightforward — all tailored for 30A, 240V systems.