Square D HU363 - 100A, Disconnect Switch

Meet the Square D HU363, a high-performance 100A disconnect switch crafted for industrial and commercial environments where safe electrical isolation is non-negotiable. Designed to support lockout/tagout procedures and to deliver a clean, reliable disconnection under load, the HU363 is built for sustained service where uptime and safety matter most.

With a 100 ampere rating, this disconnect switch provides a robust solution for isolating equipment during maintenance, testing, and emergencies while minimizing exposure to live circuits. Its straightforward operation and compatibility with standard Square D electrical systems make it a practical upgrade for facilities upgrading their protective interlocks and isolation capabilities.

Key benefits

• Lockout/tagout readiness: a proven platform for safe maintenance and repair workflows, helping comply with safety standards and labor practices.
• Reliable under load: ensures a clean disconnection even when equipment carries current, reducing the risk of arcing or partial energization.
• Durable, purpose-built design: engineered for continuous operation in demanding industrial and commercial settings.
• Seamless integration: compatible with Square D ecosystems, easing installation and future serviceability.

Ideal use cases

• Industrial production lines and manufacturing floors requiring dependable isolation during maintenance.
• Commercial electrical rooms and service enclosures where clear disconnection points are essential for worker safety.
• Facilities implementing structured lockout/tagout programs to minimize downtime and risk during servicing.

Specifications

• Amperage Rating: 100A
• Product Type: Disconnect Switch
• Brand: Square D
• Model: HU363

Practical tips for installation and use

Install in accordance with local electrical codes and your facility's lockout/tagout procedures. Before maintenance, verify the switch is fully isolated and de-energized, then tag and lock out the controls. Regularly inspect mounting hardware, wiring connections, and actuator operation to ensure consistent performance. For facilities upgrading safety protocols, pair the HU363 with clear labeling and a documented isolation point to streamline maintenance workflows and reduce the risk of accidental energization.