Schneider Electric | PBQ4640GRAW | Fusible Bus Plug | 400A | 3-Pole | 600V

Introducing the Schneider Electric PBQ4640GRAW Fusible Bus Plug — a purpose-built component engineered to integrate with compatible Schneider Electric bus systems. This 400A, 3-Pole unit delivers reliable overcurrent protection for three-phase distribution at up to 600V, making it an essential choice for maintenance, retrofit, and replacement projects where exact specifications matter.

Key specifications

• Amperage: 400 A
• Poles: 3-Pole
• Voltage rating: 600 V
• Part number reference: PBQ4640GRAW
• Application: Fusible bus plug designed for direct integration with compatible Schneider Electric bus assemblies

Why this matters for your electrical system

When your distribution equipment ages or requires an upgrade, having a precise, compatible fusible bus plug is crucial. The PBQ4640GRAW is built to deliver dependable protection without the guesswork of mismatched parts. Its exact 400A, 3-Pole, 600V specifications mean you’re restoring performance with the right electrical characteristics, minimizing replacement downtime and avoiding fit issues that can occur with generic substitutes.

Ideal use scenarios

• Maintenance—replace worn or damaged fusible bus plugs to restore protected service quickly.
• Retrofit—modernize existing Schneider Electric circuits by upgrading to a plug that matches current system requirements.
• Replacement—swap in a like-for-like component when a prior bus plug reaches end of life, ensuring seamless compatibility.

Compatibility and fit guidance

To ensure a successful installation, verify that your equipment requires a 400A, 3-Pole, 600V fusible bus plug of the PBQ family. The part number PBQ4640GRAW is the best reference for compatibility, so use it when confirming fit with your specific Schneider Electric assembly. Before ordering, double-check the ratings and that the bus plug aligns with your bus geometry and mounting provisions.

Installation and safety considerations

• Only a qualified electrician should perform installation and maintenance work on live electrical equipment.
• Ensure the power is de-energized and locked out before handling or replacing the fusible bus plug.
• Inspect the unit for any visible damage prior to installation and confirm proper alignment with the bus bars.
• Follow all local electrical codes and Schneider Electric installation guidelines to maintain proper protection and warranty coverage.