Siemens | BOS16425 | Fusible Bus Plug | 400A | 3-Pole | 240V

Siemens BOS16425 Fusible Bus Plug is a robust, field-ready solution for maintenance, retrofit, and replacement in electrical distribution systems. With a 400A rating, 3-pole configuration, and 240V operation, this fusible bus plug delivers reliable protection where you need it most—keeping circuits safe while enabling smooth serviceability.

Key specifications

• Amperage: 400A
• Poles: 3-Pole
• Voltage: 240V

Designed for scenarios where exact specifications matter, the BOS16425 is identified by its part number for precise compatibility. It’s the preferred choice for maintenance, retrofit, and replacement tasks in compatible Siemens panel systems.

Why this fusible bus plug matters

• Reliable overcurrent protection with a compact, modular form that fits standard bus assemblies.
• Facilitates quick, field-ready replacement to minimize downtime during service or upgrades.
• Supports retrofit projects by delivering 400A protection in a 3-pole, 240V configuration without compromising system symmetry or protection coordination.
• Provides a clear, referenceable part number (BOS16425) to ensure you’re selecting the exact component your panel requires.

Ideal use cases

• Maintenance of existing Siemens distribution equipment where matching specs are essential.
• Retrofit projects to upgrade older protection schemes to fusible protection with a 400A capacity.
• Replacement installations during equipment refurbishment or panel modernization.
• New installations or upgrades in applications demanding robust 400A, 3-pole, 240V protection.

Fit, compatibility, and ordering tips

Before you order, verify the fit and ratings for your specific installation. The BOS16425 part number is the best reference for compatibility, so cross-check it against your panel model and protection requirements to avoid mismatches.

Installation and safety considerations

Install by a qualified electrician in accordance with local electrical codes. Ensure the system is de-energized and locked out during replacement or retrofit, and handle all connections with care to maintain optimal contact integrity and protection performance.

Care, maintenance, and practical insights

• Store spare bus plugs in a dry environment and inspect for corrosion or physical damage before installation.
• Use as part of a planned maintenance cycle to prevent unexpected outages and to keep protection schemes up to date.
• Document the exact BOS16425 usage in your panel records to simplify future replacements and audits.