AC421RG 30A, 240V, 3-Phase, 4-Wire Fusible Bus Plug

Meet the GE AC421RG Fusible Bus Plug, a purpose-built solution for reliable three-phase, four-wire power distribution. With a 30A, 240V rating, this device is engineered to protect feeders and streamline panel wiring in demanding industrial settings. As part of GE’s Armor-Clad family, the AC421RG combines rugged durability with precise electrical protection, delivering a plug-in option that simplifies installation while maintaining robust safety margins.

Why the AC421RG stands out

• Exact rating for critical feeders: 30A current rating and 240V voltage rating make it ideal for controlling and protecting 3-phase, 4-wire circuits where reliable power distribution matters.
• Fusible protection integrated: This is a fusible bus plug, designed to provide immediate fault protection for downstream equipment while reducing the need for separate fuse blocks.
• Armor-Clad durability: Built within GE’s Armor-Clad line, it’s designed to withstand harsh industrial environments, offering reliable performance in demanding facilities.
• Efficient, plug-in installation: The bus plug form factor simplifies wiring and maintenance, helping technicians save time during panel assembly and servicing.
• 3-phase, 4-wire compatibility: Specifically engineered for modern industrial power systems that rely on balanced three-phase power and a neutral return path.

Ideal applications and use cases

• Industrial facilities and manufacturing floors where compact, protected 3-phase feeders are required
• Power distribution panels needing integrated fusing to protect downstream equipment
• Maintenance and overhaul projects that benefit from modular, plug-in protection components
• Facilities prioritizing quick swap-in replacement and reduced wiring complexity in 3-phase, 4-wire networks

How it improves your electrical system

The AC421RG delivers targeted protection for critical feeders while simplifying the overall distribution topology. By combining fusible protection with a plug-in bus plug, it reduces the number of separate components you manage in a panel, lowers assembly time, and helps keep downtime to a minimum during maintenance or fault scenarios. The rugged Armor-Clad housing provides resilience against physical wear, dust, and moisture ingress typical of industrial environments, helping maintain reliable performance over the long term.

Specifications at a glance

• Model: AC421RG
• Amp rating: 30A
• Voltage rating: 240V
• Phase: 3-Phase
• System: 4-Wire
• Type: Fusible Bus Plug
• Manufacturer: GE
• Series: Armor-Clad

For professionals building or upgrading industrial electrical systems, the AC421RG is a purpose-driven choice that aligns with robust protection, efficient installation, and durable operation. It’s not just a component—it’s a reliable link in a safe, well-protected power distribution chain.