Siemens RV421G - 30A, 240V, Fusible Bus Plug

Meet the Siemens RV421G fusible bus plug — a plug-in protection module designed for reliable power distribution in demanding industrial and commercial environments. This 30A, 240V unit integrates directly into compatible busway and panelboard systems to deliver fast, predictable overcurrent protection for feeders and process equipment.

Key specifications

• Brand: Siemens
• Model: RV421G
• Type: Fusible Bus Plug
• Amperage: 30 A
• Voltage Rating: 240 V
• Application: Busway and panelboard power distribution systems
• Typical Use: Industrial plants, commercial facilities, process equipment, and retrofit projects

Why choose the RV421G?

• Integrated protection: Combines fusing and connection in a single plug, enabling fast fault isolation and reducing field wiring complexity.
• Direct, plug-in deployment: Designed for quick replacement in existing Siemens busway and panelboard configurations, minimizing downtime during maintenance or upgrades.
• Reliability in demanding environments: Built to support continuous operation in industrial and commercial settings where protection matters most.
• Hard-to-find compatibility: Ideal for maintenance, repair, and upgrade projects where compatible busplugs are required for legacy or specialty installations.

Ideal use cases

• Replacing failed or aging bus plugs in active facilities to restore protection without extensive rewiring.
• Retrofit projects to upgrade protection level or expand capacity in industrial plants and processing equipment lines.
• New installations in systems that specify 30 A, 240 V fusible bus plugs within busway or panelboard configurations.
• Maintenance and spare-part planning for facilities with Siemens bus distribution infrastructure.

Installation and compatibility tips

RV421G is designed for Siemens busway and panelboard power distribution configurations that accept this model. Ensure compatibility with your specific bus plug slot and system arrangement, and have a qualified electrician perform installation following all applicable electrical codes and safety practices.

Practical impact

With the RV421G, you gain predictable protection timing, simplified spare parts management, and faster turnaround for outages or upgrades. In facilities where uptime is critical, this fusible bus plug helps guard feeders and process equipment against overcurrent events while keeping maintenance overhead manageable.