SB365RG 400A, 480/600V, 3-Phase, 3-Wire Fusible Bus Plug

Meet the SB365RG 400A, 480/600V, 3-Phase, 3-Wire Fusible Bus Plug from GE. Built for demanding industrial environments, this fuse-based bus plug delivers reliable protection and streamlined maintenance within GE’s Spectra Series switchgear and bus assemblies. With a 400 A rating and compatibility with 480/600 V systems, it’s designed to keep heavy feeders safe and serviceable in real-world operation.

• Amp rating: 400 A
• Voltage rating: 480/600 V
• Phase/system: 3-Phase, 3-Wire
• Type: Fusible Bus Plug
• Manufacturer/Series: GE Spectra Series

Why this bus plug matters

Fusible bus plugs are more than just connectors — they provide protective isolation for downstream circuits. The SB365RG integrates seamlessly with GE Spectra Series equipment, enabling quick fault interruption and safer maintenance windows. Its fusible design means a fault will open the circuit at the fuse level, helping protect upstream gear and reduce the risk of widespread outages.

Ideal use cases

• Industrial facilities with high-current, 3-phase distribution up to 600 V
• Manufacturing lines and processing plants that require dependable feeder protection
• Facilities outfitted with GE Spectra Series switchgear needing a reliable 400 A bus plug solution

Technical snapshot and compatibility

Designed specifically for Spectra Series systems, the SB365RG accommodates 3-Phase, 3-Wire configurations at 480/600 V. It’s rated for 400 A, making it suitable for heavy-load feeders while preserving the ability to isolate a single branch quickly in case of overload or short circuit. When selecting fuses, choose identical-rated fusible links from GE to maintain protection integrity and system compliance.

Installation and best practices

Install in compatible GE Spectra Series bus sections intended for 3-wire, 400 A service. Verify all connections are properly torqued to specification and that the load rating matches your distribution needs. Follow standard safety procedures for energized equipment, and perform routine inspections to ensure fuse integrity and clear labeling for future maintenance or upgrades.

Practical tips for maintenance and operation

• Keep a small stock of identical GE fusible links on site for rapid replacement
• Document voltage, phase, and rating alongside the facility’s electrical drawings
• Periodically inspect for signs of wear or corrosion at connection points and replace components as needed