Square D H364 - 200A, 600V, 3-Pole, Fused Disconnect Switch

The Square D H364 200A, 600V, 3-Pole Fused Disconnect Switch is built for industrial and commercial power distribution that demands robust electrical isolation with reliable protection. Combining a three-pole disconnect with integrated fusing, this unit delivers a safe, compact solution for turning power on and off across all three phases while providing dependable overcurrent protection in a single enclosure. The H364 is designed to support proper lockout/tagout procedures, making maintenance and servicing safer and more compliant, even in demanding environments.

• Amperage rating: 200 A
• Voltage rating: 600 V
• Poles: 3-Pole
• Product type: Fused Disconnect Switch
• Brand: Square D
• Model: H364

Why this fused disconnect stands out

• With fused protection, the H364 not only disconnects circuits but also provides immediate overcurrent protection, reducing the number of separate components in your power path.
• Simultaneous three-phase disconnection: The 3-pole design ensures all live lines are isolated at once, which enhances safety during maintenance and testing and minimizes the risk of partial energization.
• Lockout/tagout readiness: Built for safe maintenance practices, the unit supports standard lockout/tagout procedures to keep technicians protected during service work.
• Durable, long-term durability: Engineered for reliability in busy industrial and commercial settings, this switch is designed to withstand repeated operation and demanding service cycles.

Ideal use scenarios

• Motor control centers and process lines where immediate isolation is required for safety and serviceability
• Industrial equipment panels and power distribution enclosures needing both switching and overcurrent protection
• Facilities maintenance setups that depend on clear, lockable electrical disconnection points for safe downtime
• Commercial installations where ease of integration and reliable performance under load are priorities

Practical guidance and tips

• Use the Square D H364 in applications where both switching and overcurrent protection are beneficial in a single assembly, simplifying installation and maintenance.
• Ensure proper lockout/tagout procedures are followed during servicing to maximize safety and compliance.
• When replacing fuses, use identical ratings and type to preserve protective characteristics and system coordination.
• Plan panel layout with the 3-pole configuration in mind to guarantee synchronized isolation across all phases during disconnection.

If you’re upgrading electrical distribution, the Square D H364 200A, 600V, 3-Pole Fused Disconnect Switch offers a focused combination of reliable isolation, integrated protection, and maintenance-friendly features. It’s a practical choice for facilities that demand safety, durability, and straightforward power control in a compact, aligned package.