Square D QMJ364T - 200A, 600V, 3-Pole Panelboard Switch / Switchboard Unit | AmpState

Square D QMJ364T is a purpose-built 200 A, 600 V, 3‑pole fusible panelboard switch designed for lighting and distribution panelboards. When paired with the appropriate upstream protection and fuse class, this unit delivers reliable load switching along with dependable overcurrent protection, neatly integrated into your panelboard assembly.

Why this switch stands out

• Precise 3‑pole control: A true three‑phase switch that coordinates all conductors in a 600 V system, helping keep loads balanced and enabling safer, more predictable shutdowns.
• Robust 200 A rating: Built to handle substantial distribution loads in commercial spaces and light industrial environments without compromising performance.
• Panelboard‑fusible protection: Part of the QMJ family, designed to work with upstream protection and the appropriate fuse class to deliver reliable overcurrent protection within panelboard assemblies.
• Seamless integration: Specifically designed for lighting and distribution panelboards, making upgrades or retrofits straightforward within existing QMJ configurations.
• Trusted brand reliability: Manufactured by Square D (Schneider Electric), a long‑standing name in safe, consistent electrical distribution solutions.
• Centralized disconnect: Enables a single, regulated disconnect with fusible protection, simplifying safety checks and maintenance planning.

Ideal applications

Choose the QMJ364T for commercial buildings, multi‑unit facilities, or light industrial settings where a dedicated, three‑pole switching device with fusible protection is needed within a panelboard. It’s particularly effective when you require a centralized disconnect that can be coordinated with upstream protection to safeguard feeders and downstream circuits.

Installation & compatibility

To achieve the intended protection and performance, pair the QMJ364T with the upstream protection and fuse class specified for your system. Ensure your panelboard is a compatible QMJ configuration and that the overall electrical design accounts for the device’s 200 A, 3‑pole, 600 V rating. This unit is purpose‑built for Square D QMJ panelboards, simplifying design, stocking, and maintenance.

Technical specifications at a glance

• Amperage: 200 A
• Voltage: 600 V
• Poles: 3
• Series: QMJ
• Manufacturer: Schneider Electric / Square D
• Part Number: QMJ364T
• Applications: Lighting and distribution panelboards

Considering an upgrade or a new panelboard configuration? The QMJ364T serves as the dedicated switching element that delivers a regulated disconnect with fusible protection, designed to work in harmony with your upstream fusing scheme. For professional electrical assemblies and service upgrades, AmpState presents this Square D component as a reliable, purpose‑built choice that aligns with your QMJ panelboard ecosystem.