DFPBA421 - 30A, 240V, 3-Phase, Fusible Bus Plug

Meet the DFPBA421—the 30A, 240V, 3-Phase Fusible Bus Plug engineered for dependable power distribution in demanding industrial and commercial settings. This plug-in protection solution slides into busway and panelboard systems to deliver fast, reliable overcurrent protection where it matters most, keeping critical equipment up and running.

Core capabilities that make a difference

• Exact protection for 3-phase feeds: 30A fusible bus plug designed to interrupt fault currents and safeguard downstream equipment in 3-phase distribution networks.
• 240V operation: Suitable for a wide range of industrial feeders and commercial power paths that use standard 240V services.
• Plug-in convenience: Quick installation into compatible busway and panelboard architectures, enabling fast maintenance or upgrades with minimal downtime.
• Reliable, field-ready design: Built to withstand the rigors of industrial environments, with a form factor optimized for retrofit projects and ongoing service.
• Hard-to-find compatibility: Specifically ideal for maintenance, repair, and upgrade efforts where matching busplugs is crucial to restore or expand distribution without custom fabrication.

Ideal applications and use cases

Designed for spaces where robust protection and flexible distribution matter, the DFPBA421 shines in:

• Industrial plants needing dependable 3-phase protection for essential feeders.
• Commercial facilities undergoing power distribution upgrades or retrofits where compatible busplugs are in short supply.
• Processes and equipment that require rapid replacement or upgrade without reconfiguring the entire busway or panelboard layout.
• Maintenance and service projects seeking a proven, readily available fusible plug to minimize downtime during reliability improvements.

Specifications at a glance

• Model: DFPBA421
• Type: Fusible Bus Plug
• Amperage: 30A
• Voltage Rating: 240V
• Phase / Poles: 3-Phase
• Application: Busway and panelboard power distribution systems

Why this fusible bus plug matters for your project

In complex power layouts, downtime is costly and compatibility gaps can stall progress. The DFPBA421 is purpose-built to bridge that gap, providing a reliable, compatible protection point where you need it most. Its fusible design brings immediate current interruption in fault conditions, helping to protect transformers, drives, motors, and other critical loads. And because it’s a recognized option for retrofit work, you can source it with confidence, reducing the time and complexity of parts procurement.

Practical installation and planning tips

• Verify busway or panelboard compatibility before installation to ensure a clean fit and proper electrical contact.
• Match the fuse type and rating to your feeder requirements and upstream protection strategy to ensure coordinated protection.
• Maintain a small запас of replacement bus plugs for critical feeders to minimize downtime during routine service or upgrades.
• Follow all applicable safety procedures and lockout/tagout practices during installation or replacement.