Square D H463 - 100A, 600V, 4-Pole, Fused Disconnect Switch

Meet the Square D H463, a purpose-built fused disconnect switch engineered for industrial and commercial electrical systems that demand safe, reliable isolation. With a 100 A rating and a 600 V maximum, this 4-pole unit provides a complete, all-conductor break, ensuring downstream equipment can be serviced with confidence.

Why this fused disconnect stands out:

• All-pole isolation: 4 poles ensure every live conductor is mechanically opened, preventing accidental backfeed and simplifying compliant lockout/tagout procedures.
• Integrated fuse protection: The fused design delivers overcurrent protection within the disconnect itself, reducing the need for separate protective devices and creating a streamlined safety solution.
• Industrial-grade reliability: Built for demanding, real-world environments, it delivers dependable disconnection under load and enduring performance over time.
• Lockout/tagout readiness: Designed to work seamlessly with standard lockout devices and safety tags, helping technicians isolate circuits safely during maintenance.
• Clear control and visibility: Provides a decisive on/off indication and a trusted break in the circuit, even when switching under load.

Ideal for professionals who need a dependable isolation point in equipment and systems such as motors, conveyors, HVAC, and process lines. The Square D H463 is a smart choice for electrical contractors, facilities teams, and plant engineers responsible for safe servicing and quick maintenance turnaround. Use it in motor control centers, service entrances, and electrical panels where reliable disconnection and integrated protection simplify installation and daily operations.

Practical use cases:

• Motor-driven equipment and machinery requiring safe, guaranteed de-energization during service
• Industrial HVAC and process lines needing a definitive outage point for maintenance
• Power distribution enclosures guarding downstream feeders with built-in overcurrent protection
• Facilities that enforce strict lockout/tagout procedures for worker safety

Specifications at a glance

• Amperage rating: 100 A
• Voltage rating: 600 V
• Number of poles: 4
• Product type: Fused Disconnect Switch
• Brand: Square D
• Model: H463

Tips for best results:

• Pair with appropriately rated fuses and follow the enclosure manufacturer’s guidelines for installation and venting considerations.
• During maintenance, apply proper lockout/tagout procedures to ensure the circuit remains de-energized while service work is performed.
• Regularly inspect fuse integrity and connection torque to maintain optimal performance and safety.