Square D PFA-34020 - 20A, 480V, 3-Phase, Breaker Bus Plug

Meet the Square D PFA-34020 Breaker Bus Plug — a compact, reliable 20A, 480V, 3-Phase plug-in solution designed for demanding power distribution networks in industrial and commercial settings. Built to integrate seamlessly with busway and panelboard systems, this bus plug delivers secure, efficient connections that support steady operation in challenging environments.

Why this bus plug stands out

• Precise electrical fit: 20A rating at 480V, 3-Phase ensures compatibility with common industrial feeders and motors.
• Industrial-grade reliability: Designed by Square D to withstand continuous use, temperature variations, and exposure typical of manufacturing and processing facilities.
• Effortless retrofit and maintenance: A hard-to-find bus plug that simplifies upgrades or replacements without reworking downstream equipment.
• Versatile application: Ideal for process equipment, commercial facilities, and plant-wide power distribution upgrades.
• Compatibility: Specifically engineered for busway and panelboard power distribution systems that require a plug-type breaker interface.

Use cases and scenarios

Perfect for maintenance, repair, and upgrade projects where an exact 3-Phase, 480V bus plug is required. Typical deployments include upgrading aging electrical infrastructure in industrial plants, retrofitting commercial facilities, and replacing failing bus plugs during scheduled downtime. It pairs with Square D busway and panelboard configurations to deliver reliable three-phase power to feeders, motors, and process equipment with minimal disruption.

Specifications at a glance

• Brand: Square D
• Model: PFA-34020
• Type: Breaker Bus Plug
• Amperage: 20A
• Voltage: 480V
• Phase / Poles: 3-Phase
• Applications: Busway and panelboard power distribution systems

Who benefits

Electrical maintenance teams, retrofit specialists, and facilities managers who need a reliable, compatible bus plug that’s sometimes hard to source will find the PFA-34020 a precise match for upgrading or maintaining distribution infrastructure. If you’re replacing a panelboard segment or expanding a busway run, this plug ensures smooth integration with existing Square D components.

Practical tips for use

• Before installation, confirm that your busway or panelboard supports a 3-Phase, 480V, 20A bus plug of the PFA-34020 type.
• Keep a small stock of compatible bus plugs on-site to minimize downtime during maintenance windows.
• Adhere to all applicable electrical codes and safety procedures when performing upgrades or replacements.
• Store spare bus plugs in a clean, dry environment to prevent corrosion or contaminant exposure to contacts.