Square D | HDL36100U43X | Circuit Breaker | 3-Pole

Meet the Square D HDL36100U43X, a robust 3-pole circuit breaker engineered for reliable protection across three conductors. This unit is purpose-built for maintenance, retrofit, and replacement projects where exact specifications matter, ensuring you have the right device when you need it most.

Three-pole design for comprehensive protection The HDL36100U43X delivers synchronized protection across three poles, making it an ideal choice for multi-branch or three-phase panel configurations. When you’re upgrading or replacing components, you want a breaker that maintains system integrity and minimizes downtime.

Authentic compatibility with Square D panels The part number HDL36100U43X is your most reliable reference for compatibility. To avoid mismatches, confirm fit and ratings before ordering and align the breaker with your panel’s requirements for safe, code-compliant operation.

Why this breaker matters in real-world applications

• Maintenance scenarios: Replace aging or failed breakers quickly to restore circuit protection without gutted panels or complicated substitutions.
• Retrofit projects: Upgrade older installations with a 3-pole solution that supports newer loads while preserving existing wiring layouts.
• Replacement accuracy: When a panel calls for a specific part number, HDL36100U43X provides a precise fit and predictable performance, reducing guesswork during procurement.

What to know before you buy

• Fit and ratings: Always verify that your panel accepts HDL36100U43X and that the amperage, voltage, and compatibility align with your system design.
• Professional installation: For optimal safety and compliance, have a licensed electrician install or supervise the replacement process and re-label the panel as needed.

Designed for reliability and ease of use in real-world electrical projects, the Square D HDL36100U43X 3-pole circuit breaker is a precise, mission-critical choice for maintenance, retrofit, and replacement needs. Rely on the correct part number to ensure a proper fit, consistent protection, and smooth project execution from start to finish.