Federal Pioneer QMQB4032 - 400A, 240V, 3-Pole Panelboard Switch / Switchboard Unit | AmpState

The Federal Pioneer QMQB4032 is a rugged 400A, 240V, 3-pole fusible panelboard switch crafted for reliable load switching and precise overcurrent protection in lighting and distribution panelboards. When paired with the appropriate upstream protection and fuse class, this unit cleanly isolates feeders for maintenance or fault conditions, helping keep your critical electrical systems up and running with minimal downtime.

Why the QMQB4032 Stands Out

• Seamless panelboard integration: Designed to drop into Federal Pioneer panelboards with a consistent mounting footprint and electrical characteristics, ensuring predictable performance across the entire QMQB family.
• Clear three‑phase separation: The 3-pole configuration provides rugged, distinct separation of three-phase circuits, a must for balanced distribution in commercial and industrial environments.
• Reliable load switching: Quickly and cleanly isolates feeders for maintenance or protection tasks, reducing exposure to live circuits during service windows.
• Integrated overcurrent protection potential: When used with the correct upstream fuse class, it contributes to guarding equipment from short circuits and overloads.
• Durable, purpose-built construction: Built to withstand the demands of distribution environments, delivering consistent performance over time.
• Standardized compatibility: Part of the QMQB series—made to fit lighting and distribution panelboards from Federal Pioneer for dependable protection and control.

Ideal Use Cases

Perspectively, this fusible panelboard switch is ideal for main or feeder switching in lighting and distribution panelboards across commercial spaces such as offices, warehouses, schools, and healthcare facilities. It also serves as a reliable retrofit or replacement component in existing Federal Pioneer installations, helping you maintain a consistent protection scheme and straightforward maintenance routines. In any system where dedicated fusible switching simplifies troubleshooting and safety isolation, the QMQB4032 is a practical, performance-driven choice.

Key Specifications

• Amperage: 400 A
• Voltage: 240 V
• Poles: 3
• Series: QMQB
• Manufacturer: Federal Pioneer / Federal Pacific
• Part number: QMQB4032

Installation & Compatibility

For optimal protection capabilities, pair the QMQB4032 with the appropriate upstream protection and fuse class as specified for your installation. Verify that the panelboard enclosure supports the QMQB mounting footprint and follow local electrical codes during wiring. Wiring should be performed by qualified electrical personnel to ensure safe, code-compliant operation and to preserve the intended fault-clearing and isolation characteristics.

Why Buy from AmpState

AmpState offers genuine Federal Pioneer components with precise part identification, backed by comprehensive product datasheets and installation guidance. The QMQB4032 is stocked for reliable sourcing and supported by documentation to help your team install with confidence, maintain protection integrity, and coordinate upgrades or replacements within existing Federal Pioneer panelboard ecosystems.