Square D H363RB - 100A, 600V, 3-Pole, Fused Disconnect Switch

The Square D H363RB fused disconnect switch delivers dependable, fuse‑protected electrical isolation for demanding industrial and commercial environments. Designed to support proper lockout/tagout (LOTO) procedures and to interrupt fault currents under load, this 3‑pole unit combines safety, reliability, and long‑term durability in a compact, rugged package. With a 100A rating, 600V capability, and a NEMA 3R enclosure, it’s built to perform where weather, dust, and heavy use are factors.

Why the Square D H363RB stands out

• Fuse‑protected isolation: Provides controlled disconnection with protective fusing, helping limit fault currents and safeguard downstream equipment.
• Three‑pole design: Ensures true three‑phase isolation, improving safety and reliability for motors and line loads.
• 600V rating, 100A capacity: Suitable for a wide range of commercial and light industrial equipment without oversizing the switch.
• NEMA 3R enclosure: Weather‑ and impact‑resistant enclosure ideal for indoor/outdoor installations, protecting components in harsh environments.
• LOTO compatibility: Engineered to facilitate lockout/tagout procedures, supporting compliant safety practices in maintenance and service work.

Ideal applications and use cases

• Motor control circuits for pumps, fans, conveyors, and HVAC equipment.
• Outdoor electrical feeders and processing lines where weather resistance matters.
• Maintenance stations and service entries that require rapid, safe isolation during servicing.

Specifications at a glance

• Amperage rating: 100A
• Voltage rating: 600V
• Number of poles: 3‑Pole
• Enclosure rating: NEMA 3R
• Product type: Fused Disconnect Switch
• Brand/model: Square D H363RB

Practical tips for installation and operation

• Pair with the appropriate fuses specified for your system to ensure optimal protection and performance.
• Mount in a location that complies with local electrical codes and provides easy access for safe operation and LOTO procedures.
• Use only with compatible gear in a three‑phase distribution setup to maintain proper balance and safe shutdown behavior.
• Regularly inspect the enclosure and connections for signs of wear, moisture ingress, or corrosion to preserve NEMA 3R integrity.

Ready to upgrade your safety‑critical isolation? The Square D H363RB delivers reliable, code‑compliant disconnect capability that technicians trust for daily operations and maintenance.