Eaton UCTB404G - 400A, 480V Universal Cable Tap Box for Standard Plug-In Busway | AmpState

The Eaton UCTB404G is a 400A, 480V universal cable tap box designed to seamlessly attach field cables to an Eaton standard plug-in busway. With a lugged cable connection to the busway run, this tap box delivers a reliable, quick-to-install solution for expanding or reconfiguring electrical distribution without interrupting main feeders.

• 400A rating, 480V operation — built to handle heavy-duty feeder connections and residential/commercial-scale electrical systems with room to grow.
• Universal compatibility — engineered to work with Eaton’s standard plug-in busway, enabling flexible tap points along the run while preserving system integrity.
• Lugged cable connection — provides a robust, field-terminable interface between feeder cables and the busway, helping to simplify wiring and reduce installation time.
• Compact, modular design — designed to fit neatly into broader busway configurations, supporting tidy installations in equipment rooms, mechanical spaces, or service areas.

Ideal for facilities that require scalable power distribution without large, custom enclosures, the UCTB404G shines in data centers, manufacturing floors, warehouses, and commercial buildings where plug-in busways are used to route power efficiently. It’s particularly valuable when teams need to add a feeder or reconfigure a live busway segment—the universal design keeps changes straightforward while maintaining reliable connections.

Key benefits and practical implications include:

• Faster expansions — add a new circuit tap along an existing busway run without pulling a full new feeder, reducing downtime and labor costs.
• Enhanced system continuity — the lugged connection provides a stable, low-impedance path from busway to feeder, supporting consistent power delivery to downstream loads.
• Flexible deployment — a universal solution that adapts to various layouts and configurations within the Eaton plug-in busway ecosystem.
• Clear compatibility — when you see the Eaton standard plug-in busway in your electrical room, the UCTB404G slots in as a logical tap point for additional circuits.

How this product fits into your electrical distribution strategy: choose the UCTB404G when you need a dependable, plug-in busway tap that can accommodate a 400A feeder with a 480V system. It’s a practical choice for facilities planning phased expansions, temporary power distribution during construction, or permanent taps that require straightforward lugged terminations instead of more complex cabling schemes.

Installation tips to maximize performance (quick, practical guidance):

• Verify that your busway segment is designed for 400A and 480V operation before adding the tap box.
• Plan tap locations along the run to minimize cable lengths and maintain balanced loading across phases.
• Ensure proper lug torque and secure termination of feeder cables according to your facility’s standards and local codes.
• Inspect the enclosure access and maintain clear labeling for downstream circuits connected through the tap box.

With the Eaton UCTB404G, you gain a purpose-built, reliable tapping solution that aligns with Eaton’s plug-in busway ecosystem, delivering precise, scalable power distribution that’s easy to manage and maintain. If you’re upgrading an existing busway run or orchestrating a planned expansion, this universal cable tap box is a thoughtful, future-ready choice that keeps your electrical distribution flexible and efficient.