Square D QMJ361T - 30A, 600V, 3-Pole Panelboard Switch / Switchboard Unit | AmpState

The Square D QMJ361T is a purpose-built 3-pole fusible panelboard switch designed to streamline lighting and distribution panelboard applications. With a 30 A, 600 V rating, this unit delivers reliable load switching while coordinating with upstream protection and fuse classes to safeguard your electrical system. Crafted by Schneider Electric as part of the trusted QMJ series, it combines precise control with durable construction for dependable panel operations in commercial and light-industrial environments.

• Amperage: 30 A
• Voltage rating: 600 V
• Poles: 3
• Series: QMJ
• Manufacturer: Square D / Schneider Electric
• Part number: QMJ361T
• Application: Fusible panelboard switch for lighting and distribution panelboards

What sets the QMJ361T apart

• Three-pole isolation ensures complete disconnection of all live conductors, simplifying maintenance and enhancing safety during service work.
• Fusible switching with upstream coordination provides effective overcurrent protection when paired with the appropriate fuse class, helping prevent damage from fault conditions.
• Compact, panel-ready design fits into standard panelboard enclosures, enabling clean integration into existing lighting and distribution setups.
• Reliable brand lineage—part of the QMJ series from Square D (Schneider Electric)—known for durable performance and predictable electrical behavior in demanding environments.

Ideal use cases

• Lighting distribution panels in commercial spaces that require a clearly defined, fuse-protected isolation point
• Industrial or facility panelboards needing a dedicated switch with up to 30 A capacity and 600 V rating
• Renovations or upgrades that require a clearly defined isolation point within the panelboard lineup

How it fits into your system

The QMJ361T is designed to work in concert with upstream protection and correctly classed fuses. When integrated properly, it provides safe, reliable load interruption and a clear point of isolation for routine maintenance, upgrades, or fault events. This unit is ideal for electricians and facilities teams aiming to enhance panelboard reliability without sacrificing accessibility or safety.

Practical considerations and tips

• Verify that upstream protection and fuse class match the QMJ361T’s 30 A, 600 V ratings to ensure proper coordination and protection.
• Install in standard lighting or distribution panelboards where a three-pole disconnect is required for full-phase isolation.
• Document the device as part of the panel’s protection scheme for future maintenance and audits.
• Source through authorized channels (AmpState) to ensure genuine compatibility and support.

With the Square D QMJ361T, you gain a purpose-built three-pole fusible switch that pairs seamless load switching with dependable overcurrent protection—delivering safer, more maintainable panelboard performance for modern electrical systems.