Square D QBL32125 - 125 A, 240 V, 3-Pole Circuit Breaker | AmpState

Meet the Square D QBL32125—the 125 A, 240 V, 3-Pole molded-case circuit breaker designed for robust branch-circuit protection in panelboards and load centers. From AmpState, this unit delivers reliable, predictable protection for residential, commercial, and light industrial electrical systems, helping your panels run safely and efficiently.

• Compact molded case design frees valuable panel space, making retrofits and dense panel layouts manageable.
• Thermal-magnetic trip unit provides stable, repeatable protection by combining a thermal element for overload conditions with an instantaneous magnetic trip for short circuits.
• Three-pole configuration supports balanced protection in 3-phase panels and coordinated shutoff across multi-wire branch circuits.
• 125 A at 240 V rating aligns with common branch-circuit requirements in modern installations, offering solid protection without unnecessary nuisance trips.
• Designed for compatibility with matching OEM loadcenters and panelboards, ensuring proper fit, electrical performance, and code-compliant protection.
• Ideal for a range of environments—from homes to light commercial spaces and small industrial setups—where dependable overcurrent and short-circuit protection is essential.

Technical specifications

• Manufacturer: Square D
• Part Number: QBL32125
• Type: Thermal-magnetic molded case circuit breaker
• Amperage: 125 A
• Voltage: 240 V
• Poles: 3
• Application: Branch circuit overcurrent and short-circuit protection

Who benefits from the QBL32125

Electrical professionals and informed homeowners replacing a failed unit or upgrading panel protection will appreciate a 3-pole, 125 A, 240 V solution that fits OEM panels. It’s ideal for ensuring consistent protection in panels that require matching Square D components to maintain performance and reliability.

Practical use cases

• Replacing an aging 3-pole breaker in a residential distribution panel or multi-family dwelling.
• Upgrading panel protection in light commercial installations that demand dependable 3-phase circuit interruption.
• Installing in new or existing Square D-compatible loadcenters and panelboards that specify a 3-pole, 125 A device.

Tip: Pair this QBL32125 with the corresponding OEM loadcenter or panelboard to ensure mechanical fit and synchronized trip characteristics. Following standard electrical safety practices and local codes will help ensure a smooth, compliant installation.