Square D HDL36100U31X - 100 A, 3-Pole Circuit Breaker | AmpState

The Square D HDL36100U31X is a 100 A, 3-pole molded case circuit breaker engineered to deliver dependable branch circuit overcurrent and short-circuit protection in panelboards and loadcenters. Built for consistent protection in demanding environments, this device combines compact design with robust electrical performance.

Key features that matter in the field

• Compact molded case design maximizes panel space while maintaining accessible wiring paths, making it ideal for crowded electrical rooms and compact panels.
• Thermal-magnetic trip unit provides stable, repeatable protection against overloads and short circuits, with precise trip characteristics that help prevent nuisance tripping and unnecessary downtime.
• 3-pole configuration delivers reliable protection for 3-phase circuits, suitable for main distribution, feeders, or subpanel protection in commercial and light industrial setups.
• OEM compatibility engineered to align with matching Square D loadcenters and panelboards, ensuring straightforward replacement and dependable performance.
• Versatile applications ready for residential, commercial, and light industrial environments where dependable, code-compliant protection is required.

Why this 100 A, 3-pole breaker matters

In any electrical system, reliable overcurrent protection is essential for safety and uptime. The HDL36100U31X protects each leg of a 3-phase circuit from overload and short circuits, helping to prevent equipment damage, reduce arc flash risk, and support safer, more predictable operation of your electrical distribution network. The molded case design contributes to consistent performance across temperature and load variations, so protection remains precise when it’s most needed.

Ideal for

• Electrical pros upgrading or replacing breakers in panelboards and loadcenters that require 3-pole, 100 A protection.
• Residential and commercial installers seeking OEM-aligned components that simplify service and maintenance.
• Facilities managers and technicians in light industrial settings needing reliable, scalable protection for multi‑pole circuits.

Compatibility, installation tips, and practical notes

Choose the HDL36100U31X when you need a direct, dependable match for Square D panelboards and loadcenters. Its 3-pole, 100 A rating makes it suitable for main feeders and branch circuits in systems where precise protection and quick restoration are priorities. For best results, verify panel compatibility with the OEM recommendations and follow standard electrical practices for wiring, torque, and clearance.

In short, the HDL36100U31X offers:

• Compact form factor that respects panel real estate
• Reliable thermal-magnetic protection with repeatable trip behavior
• 3-pole protection tailored for 3-phase circuits
• Seamless integration with matching Square D OEM loadcenters and panelboards

Upgrade to the HDL36100U31X for steadfast, panel-friendly protection that supports safer, more efficient electrical distribution across residential, commercial, and light industrial applications.