General Electric | DH421RG | Fusible Bus Plug | 30A | 4-Pole | 240V

Meet the General Electric DH421RG Fusible Bus Plug, a purpose-built component designed for safe maintenance, precise retrofit projects, and reliable replacements within GE electrical gear. With a 30A rating, a robust 4-pole configuration, and 240V operation, this plug is engineered to integrate seamlessly into compatible GE assemblies, delivering protective isolation when you need it most.

Why the DH421RG stands out

• Clear, field-proven specs: 30A current rating paired with 4 poles and 240V supports common industrial distribution environments without compromising protection.
• OEM-aligned design: The DH421RG is a GE-approved solution, ensuring precise fit, electrical coordination, and reliable performance within your switchgear or bus duct system.
• Maintenance-friendly: Specifically suited for controlled shutoffs, component replacement, and retrofit work where exact spec matching matters.
• Downtime-conscious: By using the correct fusible bus plug, you minimize guesswork during service and accelerate safe re-energization after work is complete.

Ideal for

Electricians, facilities engineers, and maintenance teams managing GE-powered distribution equipment will find this fusible bus plug essential for:

• Maintenance shutdowns and testing without altering the surrounding protection scheme
• Retrofits that require a like-for-like GE component to maintain compatibility
• Replacement of damaged or degraded bus plugs while preserving system integrity

Usage scenarios and practical benefits

In industrial settings where safeguarding downstream equipment is critical, the DH421RG serves as a trusted insert that provides fault isolation and protection. Its 4-pole design supports balanced protection across all conductors, helping maintain protective coordination in 240V systems. When replacing worn parts, using the exact part number ensures you’re not compromising the geometry or electrical interface that your gear relies on.

Technical snapshot

Amperage: 30A
Poles: 4-Pole
Voltage: 240V
Part number: DH421RG

Compatibility and ordering guidance

Before placing an order, confirm the fit and ratings match your equipment. The part number is the best reference for compatibility, and ensuring exact alignment with your GE assembly helps preserve protective coordination and safe operation.

Installation and best-practice notes

For a smooth, safe installation:

• De-energize the equipment and follow your facility’s lockout/tagout procedures.
• Verify wiring and slot orientation to ensure proper seating of the fusible bus plug.
• Inspect for signs of wear or corrosion on contact surfaces; replace any gaskets or seals per GE guidelines.
• After installation, perform a system check to confirm proper isolation and re-energize only after verification.

Designed to meet the exacting needs of GE-powered distributions, the DH421RG Fusible Bus Plug offers precise compatibility, reliable protection, and practical, real-world use cases that help technicians complete maintenance, retrofit, and replacement work with confidence.