Square D HDA36125SA 125A 3P 600V Circuit Breaker | AmpState

Square D HDA36125SA is a dependable 125A, 3-pole, 600V circuit breaker designed for robust protection in panelboards, load centers, and electrical distribution systems. Built to support retrofit work and maintenance planning, this part maintains consistency in your fleet so upgrades and replacements stay streamlined.

Key specifications at a glance:

• Manufacturer: Square D
• Part Number: HDA36125SA
• Product Type: Circuit Breaker
• Amperage: 125 A
• Poles: 3
• Voltage: 600V
• Availability: AmpState

Why this 3P 125A 600V breaker stands out

• Retrofit-ready and maintenance-friendly: The HDA36125SA is ideal when you need to preserve a consistent part number across refurbishment projects, reducing downtime and confusion during replacements.
• Clear protection for demanding systems: With a 125A rating and 3 poles, it provides solid phase protection for three-phase panelboards and distributed electrical networks, helping prevent overcurrent events in commercial and industrial environments.
• Trusted performance from Square D: Built to meet the rigorous standards of electrical distribution equipment, ensuring reliable operation in everyday and mission-critical applications.
• Scalable sourcing from AmpState: When you need to stock up for maintenance windows or large retrofit jobs, AmpState offers dependable availability for quick, worry-free procurement.

Ideal use cases and scenarios

• Retrofit projects where maintaining the exact part number simplifies inventory management and compatibility checks.
• Maintenance planning for industrial facilities with three-phase panelboards and load centers requiring reliable overcurrent protection at up to 600V.
• Repairs or replacements in electrical distribution setups that demand a proven Square D solution with consistent performance.
• Systems undergoing upgrades that need a clear, standardized 125A protection scheme across multiple panels.

How to confirm fit for your equipment: ensure the panelboard or load center expects a 3-pole, 125A, 600V Square D device in the HDA family. If you’re unsure about compatibility with your current setup, message us and we’ll help you confirm fit and identify the right solution for your project.