Siemens 3PH/4W/480Y/277V - 30A, 277V, 3-Phase, Fusible Bus Plug

Siemens 3PH/4W/480Y/277V Fusible Bus Plug delivers robust overcurrent protection and streamlined power distribution for demanding environments. With a 30A rating at 277V, this 3-phase, 4-wire solution is designed to slot into existing busway and panelboard systems, enabling quick fault isolation and minimal downtime inbusy industrial and commercial settings.

Key specifications

• Brand: Siemens
• Model: 3PH/4W/480Y/277V
• Type: Fusible Bus Plug
• Amperage: 30A
• Voltage Rating: 277V
• Phase / Poles: 3-Phase
• Application: Busway and panelboard power distribution systems
• Typical Use: Industrial plants, commercial facilities, process equipment, and retrofit projects

What sets this bus plug apart

• Designed for hard-to-find needs: A reliable, compatible fusible bus plug for maintenance, repair, and upgrade projects where exact Siemens components are required.
• Direct fit for 480Y/277V systems: Specifically engineered for 3-phase, 4-wire 277V networks common in modern industrial and commercial infrastructure.
• Fast fault isolation: Fusible protection helps contain faults quickly, reducing damage to downstream equipment and limiting downtime.
• Modular, retrofit-ready: Ideal for upgrading existing busway and panelboard configurations without extensive overhauls.
• Quality and reliability: Built to meet Siemens’ rigorous standards for demanding environments, delivering consistent performance over time.

Ideal use cases

• Retrofit projects in facilities that operate on 277V 3-phase systems, upgrading protection where original components are aging or unavailable.
• Maintenance tasks in industrial plants that require dependable, on-spec bus plugs to keep critical process equipment online.
• Repairs and replacements in commercial facilities where modular power distribution must align with existing Siemens busway infrastructure.
• New installations that demand precise compatibility with 480Y/277V configurations and 3-phase, 4-wire protection schemes.

How this improves your operation

With the Siemens fusible bus plug, you gain predictable protection that aligns with your system design, minimizing downtime during outages and simplifying maintenance schedules. The 277V rating is tailored for environments where line-to-neutral voltage matters for equipment sensitivity, control circuits, and downstream devices. By using a compatible bus plug, you preserve electrical coordination, protect upstream transformers and downstream loads, and extend the life of your power distribution network.

If you’re upgrading, repairing, or expanding a Siemens-based power distribution layout, this 3PH/4W/480Y/277V fusible bus plug offers a precise, dependable solution designed to meet the demands of industrial plants, commercial facilities, and process equipment environments. Order it to ensure you have the exact component your system requires for reliable, efficient operation.