General Electric | SL440HJK4I | Fusible Bus Plug | 400A | 600V

General Electric SL440HJK4I Fusible Bus Plug is a purpose-built protective accessory designed for electrical distribution systems that require a reliable 400A fusible connection at up to 600V. Built for maintenance, retrofit, and replacement projects, this GE bus plug enables quick restoration or upgrade of protection while ensuring compatibility with existing switchgear.

• Amperage: 400 A
• Voltage rating: 600 V
• Type: Fusible bus plug
• Part number: SL440HJK4I
• Manufacturer: General Electric

Why this fusible bus plug matters

Choosing the SL440HJK4I means relying on a component engineered to fit GE panels and compatible switchgear, delivering precise contact geometry and dependable fusible behavior. This isn’t a generic substitute—it's a purpose-matched part that helps protect downstream equipment, manage fault currents, and reduce the risk of nuisance trips during routine operation or faults.

Ideal use cases

• Maintenance: replace worn or failed bus plugs to restore protective functionality without a full panel overhaul.
• Retrofit: upgrade older gear to current protective standards with a drop-in GE solution.
• Replacement: substitute a failed component with a verified GE part to maintain system integrity and performance.

Compatibility and ordering guidance

To ensure a perfect fit, verify your equipment’s ratings and connector geometry before purchase. The SL440HJK4I part number is the most reliable reference for compatibility, helping you align the bus plug with the intended GE panel or switchgear configuration.

Practical tips for installation and care

• Have a qualified electrician confirm the unit matches your panel’s required amperage, voltage, and connector type before installation.
• Keep a spare SL440HJK4I on hand for planned maintenance or unexpected replacements to minimize downtime.
• Store unused units in a clean, dry environment to prevent corrosion and ensure reliable performance when installed.