General Electric | SB421R | Fusible Bus Plug | 30A | 240V

Introducing the General Electric SB421R Fusible Bus Plug — a purpose-built protection and connectivity solution for electrical distribution systems that demand precision and reliability. Designed for maintenance, retrofit, and replacement projects, this 30A, 240V fusible bus plug ensures your GE equipment continues to operate with the exact specs the system requires.

• Precise 30A, 240V rating tailored to meet the exact protection needs of compatible panels and bus assemblies, helping you maintain proper overcurrent protection where it matters most.
• Integrated fusible design combines protection and connection in a single plug, reducing the parts you manage during retrofits or panel upgrades and simplifying installation.
• Maintenance, retrofit, and replacement ready — a reliable drop-in solution that minimizes downtime and keeps your electrical distribution running smoothly without guesswork.
• Part number SB421R as your compatibility reference — the clearest guide to fit. Always verify that the device matches your equipment’s mounting, enclosure, and rating requirements before ordering.

Why this fusible bus plug matters

In aging or expanding electrical systems, you need a component you can count on. The SB421R provides a plug-and-protect approach, enabling straightforward retrofits or replacements within GE-backed configurations. It helps maintain system protection continuity, reduces inventory complexity by consolidating fuse and plug functionality, and supports efficient maintenance workflows.

Ideal for

• Facilities managers overseeing electrical distribution in commercial or light industrial settings
• Electrical technicians performing panel maintenance, upgrades, or retrofits
• Panel builders and integrators seeking compatible GE components for reliable protection networks

Key specifications

• Amperage: 30A
• Voltage: 240V
• Part number: SB421R

Installation and compatibility guidance

Before ordering, confirm that your equipment requires a 30A, 240V fusible bus plug and that SB421R is the correct GE reference for your panel or bus assembly. The part number is your best reference for compatibility, and matching fit and ratings are essential for safe, effective operation.

Whether you’re performing routine maintenance, updating an older installation, or replacing a worn component, the GE SB421R Fusible Bus Plug delivers the trusted GE engineering you rely on — with a straightforward path to restored protection and performance.