Square D KHL36125 - 125 A, 3-Pole Circuit Breaker | AmpState

The Square D KHL36125 is a 125A, 3-pole molded case circuit breaker designed to protect panelboards and load centers from overcurrent and short circuits. Its compact footprint and thermal-magnetic trip unit deliver dependable protection with efficient use of space and consistent performance.

Why this breaker stands out

• Compact molded case design preserves panel space while delivering solid branch circuit protection, simplifying panel layouts in tight installations.
• Thermal-magnetic trip unit provides stable, repeatable protection across varying temperatures and inrush conditions, reducing nuisance trips while maintaining safety during motor starts and surges.
• OEM-loadcenter compatibility is built for seamless integration with matching Square D loadcenters and panelboards, ensuring a precise fit and proper coordination with existing protection schemes.
• Versatile for multiple settings—well suited for residential feeders, commercial distribution panels, and light industrial applications where robust 3-pole protection is needed.

Specifications at a glance

• Manufacturer: Square D
• Part number: KHL36125
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 125A
• Poles: 3
• Application: Branch circuit overcurrent and short-circuit protection

Use cases and installation considerations

Install the KHL36125 in panelboards or load centers where reliable 3-pole protection is required for 3-phase circuits. It’s an ideal choice for feeders to lighting, HVAC equipment, small motors, and other switched loads in commercial and light industrial environments. When upgrading or expanding a panel, this unit provides a direct, compatible fit to maintain electrical coordination and dependable protection across the system.