Square D HDL26100 - 100 A, 600 V, 2-Pole Circuit Breaker | AmpState

The Square D HDL26100 is a 100 A, 600 V, 2-pole molded case circuit breaker designed for dependable branch-circuit protection in panelboards and load centers. Sold by AmpState, this unit combines a compact footprint with a robust thermal-magnetic trip system to deliver consistent protection across a wide range of installations.

Key to its appeal is how it protects both equipment and people. The thermal element provides reliable overload protection with a predictable, inverse-time response, while the magnetic coil activates an instantaneous trip during short-circuit events. This dual-action design minimizes damage from faults and reduces downtime by isolating the fault quickly.

Why this model stands out in the field:

• Compact molded-case design that maximizes panel space and simplifies installation in tight panels
• Thermal-magnetic trip unit that delivers stable, repeatable protection performance over the life of the breaker
• Built-in compatibility with matching OEM load centers and panelboards, making replacement straightforward and preserving panel-wide protection coordination
• Versatility for residential, commercial, and light industrial applications, supporting a variety of circuits and equipment

Specifications

• Manufacturer: Square D
• Part Number: HDL26100
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 100 A
• Voltage Rating: 600 V
• Number of Poles: 2
• Application: Branch circuit overcurrent and short-circuit protection

Ideal use scenarios

• Residential panelboards where space efficiency is critical, enabling more circuits in a smaller enclosure
• Commercial electrical rooms requiring dependable protection for shared equipment and lighting circuits
• Light industrial enclosures where quick isolation of a fault minimizes downtime and protects wiring and devices

Practical guidance

For best results, pair the HDL26100 with compatible Square D load centers and panelboards to maintain consistent protection coordination. Ensure the panel is rated for 600 V and that the overall panel layout accommodates a 2-pole, 100 A breaker. Follow standard electrical installation practices and consult the panel manufacturer’s guidelines when integrating this breaker into an existing or new distribution system.