Square D QMB-362-T - 60A, 600V, 3-Pole Panelboard Switch / Switchboard Unit | AmpState

In commercial lighting and distribution panelboards, reliability is non‑negotiable. The Square D QMB-362-T fusible panelboard switch from the QMB series delivers confident control and protection for mid‑range circuits. With a 60A rating and 600V capability, it’s designed to handle everyday demand while keeping installation straightforward.

• Three-pole design: Balanced three‑phase control ensures all phases switch together, delivering coordinated protection and consistent coordination with upstream protection devices.
• 60A, 600V: Fits typical lighting and distribution feeders without oversizing components, helping keep enclosure space and cost in check.
• Fusible panelboard switch: Provides integrated overcurrent protection when used with the appropriate fuse class, simplifying protection schemes and reducing component count.
• Compact, field‑friendly form factor: Easier installation, faster maintenance, and smoother retrofits in crowded electrical rooms or retrofit projects.
• Manufacturer support: Backed by Schneider Electric / Square D, ensuring reliable parts availability, easy sourcing, and seamless integration with existing QMB‑series protection schemes.
• Precise identification: Part Number QMB-362-T, Series QMB, for straightforward ordering and accurate replacements.

Who this is for: Ideal for retrofits or new builds in commercial settings—warehouses, schools, retail spaces, and light industrial facilities—where a fusible switch with 3‑phase control is needed to protect feeders and lighting circuits. It’s designed to work in harmony with upstream protection plans and a specific fuse class, helping you achieve targeted protection and reliable phase coordination without unnecessary complexity.

Why it matters in practice: Coordinated 3‑phase switching minimizes the risk of uneven phase loading or protection gaps. The integrated fusible approach reduces panel depth and wiring congestion, while the 60A rating provides a balanced solution for mid‑sized panelboards. This unit is a practical upgrade path for panels currently relying on separate protective devices or less integrated switching components.

Practical tips for installation and maintenance:

• Verify compatibility with your upstream protection scheme and the required fuse class before installation to ensure proper overcurrent protection and coordination.
• Plan a straightforward replacement or upgrade within the existing QMB‑series panelboards to minimize downtime during changes or refurbishment.
• Keep a spare QMB‑362‑T on hand in maintenance inventories to reduce panel downtime in critical facilities.
• When retrofitting, map feeders to each phase to preserve balanced loading and ensure the three‑pole switch controls all phases simultaneously.

Equip your lighting and distribution panelboards with the proven reliability and coordinated protection of the Square D QMB‑362‑T. With precise part identification, robust manufacturer support, and a design tailored for commercial environments, this fusible panelboard switch simplifies installation, enhances protection coordination, and helps keep critical spaces powered with confidence. When you order, use the exact part number QMB‑362‑T to ensure a seamless fit within your existing QMB lineup and protection strategy.