Westinghouse COP321N - 30A, 240V, 3-Phase, Fusible Bus Plug

Westinghouse COP321N is a purpose-built fusible bus plug designed to deliver reliable, protected power in demanding industrial and commercial environments. With a 30 A, 240 V, 3-phase rating, this plug-in device integrates seamlessly into compatible busway and panelboard distribution systems to keep critical equipment energized and protected.

What makes the COP321N stand out

• Precise electrical specification: 30 A at 240 V in a 3-phase configuration, providing dependable load handling for mid-size to large installations.
• Fusible protection: Integrated fusible design offers prompt isolation during faults, helping safeguarding downstream equipment and improving crew safety during maintenance.
• Plug-in convenience: Quick installation into compatible busways and panelboards minimizes downtime and simplifies upgrades or retrofits.
• Hard-to-find compatibility: This model is ideal for maintenance, repair, and upgrade projects where a compatible bus plug is scarce, reducing project lead times.
• Industrial-grade reliability: Built by Westinghouse for continuous service in tough plant environments, supporting long service intervals and predictable performance.

Ideal use cases

• Industrial plants undergoing system upgrades or expansions where existing busway and panelboard configurations require a precise 3-phase, 240 V, 30 A fusible plug.
• Commercial facilities that need a modular, replaceable power distribution plug to support process equipment and critical loads.
• Retrofit projects aiming to modernize electrical distribution without a complete panel overhaul, preserving existing infrastructure while upgrading protection and circuit integrity.
• Maintenance and repair campaigns where rapid, compatible plug solutions minimize downtime and keep downtime costs in check.

How it solves real problems

• : Plug-and-play design enables faster replacements during outages, keeping production lines and critical systems online.
• : Fusible elements provide controlled fault isolation, protecting wiring and equipment from damage and supporting safer maintenance work.
• : Defined amperage, voltage, and phase ratings simplify purchasing decisions and ensure you’re compatible with existing distribution hardware.
• : A durable, widely used Westinghouse component reduces the risk of obsolescence and simplifies future spares management.

Installation and compatibility tips

• Ensure your busway or panelboard system is designed to accept the COP321N 30 A, 240 V, 3-phase fusible bus plug to avoid fitment issues.
• Verify the specific fuse type and rating required by your downstream circuits to maintain proper protection levels.
• Plan for routine maintenance with a ready spare COP321N on hand to minimize unplanned downtime.
• Engage a qualified electrical professional for installation to confirm alignment with local codes and safety standards.

Who should consider this product

• Electrical engineers, facilities managers, and maintenance teams responsible for power distribution at industrial facilities and commercial sites.
• Contractors and OEMs performing upgrades or retrofits that require reliable, compatible fusible bus plugs.

With the Westinghouse COP321N, you gain not only a trusted component but a practical, future-ready solution for dependable 3-phase distribution, simplified maintenance planning, and a smoother path to system upgrades.