Siemens | BP421G | Fusible Bus Plug | 30A | 240V

Siemens BP421G Fusible Bus Plug is a purpose-built component for safe, efficient power distribution within Siemens bus systems. Whether you’re conducting routine maintenance, planning a retrofit, or replacing a worn part, this 30A 240V fusible plug is designed to plug into compatible Siemens gear with precision and reliability.

Key specifications

• Amperage: 30A
• Voltage: 240V
• Part number: BP421G

Why it matters

In electrical distribution, a fusible bus plug ensures proper current protection and a fast, secure path for power. Using the original BP421G preserves the intended protection scheme, maintains clear fault isolation, and simplifies maintenance with a component that matches the original design and performance expectations.

Who should use this

• Maintenance teams replacing worn or damaged fusible plugs in Siemens panels
• Technicians performing retrofits or capacity upgrades on low-voltage distribution with Siemens equipment
• Facilities managers stocking a ready-to-install spare for critical Siemens bus assemblies

Installation and compatibility

Before ordering, confirm fit and ratings match your equipment. The BP421G is the best reference for compatibility—verify your Siemens model and bus assembly accepts this plug. Follow standard electrical safety practices: ensure power is fully isolated and work only with components rated for your system’s voltage and current.

Practical tips

• Keep a spare BP421G on hand to minimize downtime during planned maintenance
• Store in a clean, dry environment to protect contacts from corrosion
• Document the part number in asset records to streamline future replacements