Square D | PFH36040GN | Bus Plug | 40A | 4-Pole | 600V | 18kA

When maintenance, retrofit, or replacement is on the docket for Square D panel systems, the PFH36040GN Bus Plug stands out as a precise, field-ready solution. This 40A, 4‑pole unit is engineered to slot into compatible Square D enclosures and deliver dependable performance across demanding 600V networks with up to 18kA fault current.

Why choose PFH36040GN for your next project?

• Exact compatibility — The PFH36040GN is the part number that ensures a seamless fit with Square D bus plug interfaces. Use the part number as your primary reference to avoid mismatches during maintenance or retrofits.
• Four-pole configuration — Four independent poles enable coordinated switching and fault isolation across multiple circuits, improving safety and simplifying panel management.
• Robust electrical ratings — 40A continuous amperage, 600V maximum, and 18kA short-circuit current rating give you headroom for demanding industrial environments and short-circuit events.
• Built for replacements and retrofits — Specifically designed for situations where existing gear must be matched to a known spec, ensuring you don’t have to rework the bus assembly or panel interior.
• Reliability you can trust — Square D’s engineering lineage translates into consistent contact performance and durable construction that stands up to regular maintenance cycles.

Practical use cases

• Maintenance: replace worn bus plugs in service panels with exact-spec components to minimize downtime.
• Retrofit: upgrade legacy setups to a modern, four-pole, 600V configuration without altering surrounding hardware.
• Replacement: quickly swap out failed bus plugs using the best reference part number to ensure compatibility.

Important fit notes

• Fit and ratings must be confirmed before ordering.
• The PFH36040GN part number is the best reference for compatibility with your Square D system.

Tips for installation and care

• Before installation, verify that your panel’s bus plug interface matches the PFH36040GN configuration and that the system voltage aligns with a 600V rating.
• Keep the component in its original packaging until installation to avoid handling damage that could affect the 18kA rating.
• Document the replacement with the part number in your maintenance log to simplify future service and reordering.