Square D HGL36125 - 125 A, 600 V, 3-Pole Circuit Breaker | AmpState

The Square D HGL36125 is a 125 A, 600 V, 3-pole molded case circuit breaker designed to deliver dependable branch circuit protection and short-circuit protection in panelboards and loadcenters. Built for reliability in demanding electrical environments, this unit emphasizes space efficiency and precise, repeatable protection performance.

• Compact molded case design preserves precious panel space, enabling cleaner, more organized distribution with room for future expansion.
• Thermal-magnetic trip unit provides stable, repeatable protection across varying loads and temperatures, responding quickly to overloads and short circuits.
• OEM-ready compatibility is engineered to pair with matching Square D loadcenters and panelboards for seamless integration and dependable operation.
• Versatile application range suitable for residential, commercial, and light industrial panels that require robust protection without complexity.

Technical specifications at a glance

• Manufacturer: Square D
• Part number: HGL36125
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 125 A
• Voltage rating: 600 V
• Number of poles: 3
• Application: Branch circuit overcurrent and short-circuit protection

Use cases and practical benefits

This 3-pole design is ideal for three-phase distribution in panelboards and loadcenters where space is at a premium but protection must remain uncompromised. Typical scenarios include:

• Three-phase service panels in light commercial spaces—protecting motors, compressors, and other three-phase equipment.
• Residential and small business panels that require reliable protection for branch circuits without adding bulk.
• retrofit projects where a compatible, OEM-matched breaker ensures consistent trip curves and coordinated protection with existing Square D systems.

Choosing the HGL36125 means aligning with a proven Square D protection strategy: a compact, dependable breaker that integrates smoothly with your panelboard ecosystem, delivers consistent performance, and simplifies maintenance and future upgrades. With this unit on your distribution side, you gain clarity in protection, space efficiency, and peace of mind for both current loads and planned expansions.