Square D H363RB 100A 3P 600V Safety Switch, NEMA 1, Fusible | AmpState

The Square D H363RB 100A 3P 600V Safety Switch is engineered to deliver reliable equipment disconnect and isolation at the point of use. With a NEMA 1 enclosure and a fusible design, it stands up to indoor control environments while providing straightforward maintenance and clear, actionable safety benefits for your electrical system.

Why this matters for real-world projects

• Part-number consistency: Ideal for retrofit work and maintenance planning where the exact H363RB part needs to stay the same across panels and machines.
• Three‑phase protection: 3 poles handle three‑phase motors and equipment with a single, accessible disconnect.
• 600 V rating: Supports common industrial distributions, giving you a robust, scalable solution for growing systems.
• Fusible design: Provides reliable overcurrent protection with a straightforward fuse-replacement workflow to minimize downtime.
• Indoor safety, easy servicing: NEMA 1 enclosure protects the switch in standard indoor environments while keeping maintenance access straightforward.

Key specifications at a glance: 100 A, 3P, 600 V, NEMA 1, Fusible, Square D.

Use cases and practical applications

• Retrofit projects where the H363RB is the exact replacement part you rely on, ensuring seamless compatibility with existing wiring and control circuits.
• Routine maintenance tasks that require a safe, clearly identifiable disconnect without reconfiguring control panels.
• New indoor installations in environments where a robust, fuse-protected safety switch is preferred for motor control centers and equipment disconnect points.

How AmpState supports you

AmpState offers the H363RB in stock, with expert help to confirm fit. Need to match a part number or verify compatibility? Message us and we’ll help you confirm fit quickly so you can plan maintenance windows with confidence.

In short, the Square D H363RB 100A 3P 600V Safety Switch is a purpose-built solution for reliable, maintainable, and standards-aligned equipment isolation. It’s not just a switch—it's a strategic piece of your electrical infrastructure that keeps lines up and work crews safe.