Square D H321N - 30A, 3-Pole, Disconnect Switch

The Square D H321N 30A, 3-Pole Disconnect Switch is built for environments where safe electrical isolation and dependable performance are non-negotiable. Designed for industrial and commercial applications, this switch delivers secure disconnection under load and supports proper lockout/tagout procedures, helping maintenance teams work safely without sacrificing reliability over the long term.

Key benefits

• 3-Pole, 30A configuration provides true three-phase isolation for standard industrial power systems, ensuring each phase is safely disconnected when needed.
• Lockout/Tagout compatibility supports compliant maintenance practices, reducing the risk of accidental energization during service.
• Dependable disconnection under load engineered for reliable operation even when circuits are energized, contributing to safer shutdowns and predictable performance.
• Durability for ongoing use designed to withstand the demands of busy commercial and industrial environments, delivering long-term service life.

Ideal use cases

• Service and maintenance shutdowns for three-phase motors and equipment on manufacturing floors.
• Electrical isolation points in control panels, machine rooms, or service entrances for safe work practices.
• HVAC, pumps, conveyors, and other three-phase systems that require a reliable disconnect before service or repairs.

Why choose the H321N

This disconnect switch is purpose-built to meet the needs of facilities that require clear, immediate isolation of electrical circuits without compromising safety or longevity. By combining a robust 3-pole design with lockout/tagout readiness, the H321N helps facilities maintain safer operations, reduce downtime, and simplify compliant maintenance routines.

Specifications at a glance

• Amperage Rating: 30A
• Number of Poles: 3-Pole
• Product Type: Disconnect Switch
• Brand: Square D
• Model: H321N