Square D HDL26125 - 125 A, 600 V, 2-Pole Circuit Breaker | AmpState

The Square D HDL26125 is a 125 A, 600 V, 2-pole molded case circuit breaker designed to safeguard branch circuits in panelboards and load centers. This reliable unit is built for residential, commercial, and light industrial settings, delivering dependable overcurrent and short-circuit protection where it matters most.

Engineered for reliable protection

• Compact molded case design minimizes space usage within panels, making room for additional circuits or future expansion.
• Thermal-magnetic trip unit provides stable, repeatable protection performance for both overloads and short circuits, with precise trip characteristics.
• 2-pole configuration ensures paired protection of both conductors, enhancing safety in multi-wire branch circuits.
• OEM panel compatibility engineered to be compatible with matching Square D OEM load centers and panelboards for straightforward, reliable installation.
• Wide application range suitable for residential, commercial, and light industrial electrical systems.

Key specifications

• Manufacturer: Square D
• Part number: HDL26125
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 125 A
• Voltage rating: 600 V
• Number of poles: 2
• Application: Branch circuit overcurrent and short-circuit protection in panelboards and load centers

Ideal use cases

Whether you're upgrading an existing panel or configuring a new installation, the HDL26125 delivers dependable protection where you need it. Use cases include:

• Replacing a worn-out or mismatched breaker in Square D panelboards/load centers to restore proper protection and trip coordination.
• Supplying 125 A service to multi-branch circuits in commercial spaces such as offices, retail, or light industrial environments.
• Creating a scalable electrical distribution setup in residential or small commercial projects where a compact, space-efficient breaker is essential.

Why this matters in your electrical system

The combination of a 125 A rating, 600 V capability, and a thermally-magnetic trip mechanism means you get fast fault clearing for short circuits and reliable protection against overheating. Because it’s designed to work with matching OEM Square D panels, you reduce mismatch risk, improve trip coordination, and simplify future panel upgrades.

Delivered by AmpState, this HDL26125 is a dependable choice for installers and facility managers seeking a proven, easily sourced circuit breaker that aligns with established Square D panel ecosystems.