Siemens | XLVB321NG | Fusible Bus Plug | 30A | 3-Pole | 240V

Designed for Siemens 240V, three‑phase power environments, the Siemens XLVB321NG Fusible Bus Plug delivers reliable protection and swift serviceability for maintenance, retrofit, and replacement projects. This official, 3‑pole bus plug is engineered to integrate seamlessly with existing Siemens bus plug assemblies, helping you restore protected feeders quickly while preserving panel integrity.

Key specifications

• Amperage: 30A
• Poles: 3‑Pole
• Voltage: 240V
• Part number: XLVB321NG
• Best reference for compatibility: Use the XLVB321NG part number to confirm fit
• Applications: Maintenance, retrofit, and replacement in compatible Siemens panels

Why this fusible bus plug stands out

• Official Siemens part—built to exact specifications for dependable performance and long service life.
• Precise 3‑pole, 240V configuration ensures proper alignment with your distribution setup and consistent protection for each phase.
• Fusible protection provides rapid isolation of faulted circuits, helping minimize damage and downtime during service events.
• Ease of retrofit — designed for straightforward replacement in compatible bus plug assemblies, reducing maintenance time and labor costs.
• Clear reference for compatibility — the XLVB321NG part number is the strongest indicator of fit, simplifying ordering and cross‑checking against your panel model.

Ideal use cases

• Routine maintenance where a fusible bus plug needs to be replaced to restore circuit protection.
• Retrofit projects upgrading older panels to current Siemens protection standards.
• Emergency replacements in service corridors where quick, reliable part swaps minimize system disruption.
• Voltage and ampacity‑matched protection for 3‑phase feeders in commercial or industrial environments.

Practical notes for installation and compatibility

Before ordering, verify that your panel or bus plug assembly accepts the XLVB321NG configuration and rating. This part is best referenced by its model number XLVB321NG to ensure an exact fit. When performing replacement work, follow proper electrical safety procedures, de‑energize the system, and consult your panel’s documentation to confirm compatibility and ratings. Using the correct Siemens part helps maintain system protection, reliability, and compliance with your electrical design requirements.