Siemens UV423 - 100A, 240V, 3-Phase, Fusible Bus Plug

The Siemens UV423 Fusible Bus Plug is a purpose-built solution for reliable, safe power distribution in demanding industrial and commercial environments. With a 100A rating and 240V three-phase design, this component plugs into busway and panelboard systems to deliver clean, protected power to critical equipment and facilities.

Why the UV423 stands out

• Dedicated fusible protection for 3‑phase circuits—integrated fusing helps isolate faults quickly, reducing downtime and protecting downstream equipment.
• Robust 100A capacity and 240V operation tailored for mid-to-heavy load distribution across industrial processes and commercial operations.
• Seamless compatibility with Siemens busway and panelboard systems—designed to fit the UV423 footprint, making retrofits and upgrades smoother in established installations.
• Ideal for hard-to-find busplugs—a practical choice for maintenance, repair, and upgrade projects where matching components are scarce.

Ideal applications and scenarios

• Industrial plants needing dependable, plug-in protection for distribution feeds to process equipment and motors.
• Commercial facilities undergoing modernization or capacity upgrades, where a compatible 3-phase fusible plug is required.
• Retrofit projects that demand a precise fit with existing busway and panelboard configurations.
• Maintenance workflows where fast replacement of a fusible bus plug minimizes shutdown times and preserves system reliability.

What problems it solves

• Shortens downtime by providing a plug-and-protect solution that integrates with existing distribution infrastructure.
• Improves fault isolation in 3-phase power networks, safeguarding process equipment and reducing risk of cascading failures.
• Offers a dependable, easy-to-source option for upgrades and refurbishments in environments with strict compatibility requirements.

Technical specifications

• Model: UV423
• Type: Fusible Bus Plug
• Amperage: 100A
• Voltage Rating: 240V
• Phase / Poles: 3-Phase
• Application: Busway and panelboard power distribution systems

Installation and maintenance insights

Designed for straightforward integration into compatible Siemens busways and panelboards, the UV423 supports streamlined maintenance workflows. For best results, verify the plug’s fit against existing footprints in your distribution system, ensure power is safely de-energized during replacement, and store spare fusible components for rapid fault isolation during scheduled maintenance or retrofit work.

This listing is ideal for maintenance, repair, and upgrade projects where compatible, hard-to-find busplugs are required—delivering dependable protection and reliable distribution across industrial plants, commercial facilities, and process equipment setups.