Square D HU364 - 200A, 600V, 3-Pole, Safety Switch, NEMA 1

The Square D HU364 safety switch is built to deliver reliable on/off isolation and dependable overcurrent protection in demanding indoor environments. With a robust 200A rating at up to 600V and a 3-pole configuration, this NEMA 1 enclosure is engineered for durability, easy maintenance, and long-term performance where safety and uptime matter most.

Key specifications

• Model: HU364
• Amperage: 200A
• Voltage: 600V
• Poles: 3-Pole
• NEMA Rating: NEMA 1

Why this safety switch stands out

• Designed to reliably disconnect all three phases, ensuring safe maintenance and protection for downstream equipment.
• Compact, maintainable design: A space-conscious solution that’s straightforward to install, inspect, and service in busy industrial or commercial spaces.
• Versatile protection options: Suited for use as a motor disconnect, panelboard protection, or branch-circuit protection where a compact fusible switch is advantageous.
• Rugged indoor reliability: Built to handle the harsher rhythms of industrial and commercial environments while preserving system integrity.

Ideal applications

• Motor disconnects for small to mid-size equipment where clean isolation is essential
• Panelboards requiring a dedicated safety switch for reliable sectional protection
• Branch circuit protection in indoor facilities such as manufacturing floors, warehouses, and commercial spaces
• HVAC and auxiliary systems that demand quick, dependable isolation to support maintenance and safety protocols

Practical considerations and insights

Choosing the HU364 means prioritizing safety, reliability, and space efficiency without compromising protection. Its 3-pole configuration ensures simultaneous disconnection of all lines, which simplifies troubleshooting and reduces risk during service. The NEMA 1 enclosure makes it a practical indoor solution where dust and non-hazardous conditions are typical, while maintaining straightforward integration with existing distribution setups. For environments that require selective coordination or fusible protection, the HU364 supports these configurations, offering flexibility to tailor protection schemes to your equipment and code requirements.

Whether you're outfitting a new installation or upgrading an aging disconnect, the Square D HU364 provides clear, dependable isolation and protection that electricians and facility managers can trust day after day.