Square D HDL36125AA 125A 3P 600V Circuit Breaker | AmpState

The Square D HDL36125AA is a genuine, high-reliability circuit breaker designed for panelboards, load centers, and electrical distribution networks. With a 125 A rating, 3 poles, and a 600 V interrupting capability, it delivers dependable overcurrent protection where it counts most.

For professionals who value exact part-number matching, this HDL36125AA serves as a direct-fit replacement from Square D, ensuring proper fit, mounting, and trip characteristics in compatible panels. It’s readily available from AmpState, and our team can help confirm compatibility if you’re unsure about fit—just send us a message and we’ll verify.

Key benefits and use cases

• Direct part-number match to minimize downtime during maintenance and avoid guesswork when sourcing replacements.
• Ideal for panelboards and load centers in commercial and light industrial settings that require a 125 A, 3-pole, 600 V circuit breaker.
• Stock-ready spare for service fleets and inventory, ensuring quick swaps when a breaker trips or malfunctions.
• Durable Square D engineering with proven performance in electrical distribution applications, capable of handling typical inrush and fault conditions within its rating.
• Clear path to compatibility: if you need help confirming fit, message AmpState and we’ll assist with validation for your specific panel model.

Specifications at a glance:

• Manufacturer: Square D
• Part Number: HDL36125AA
• Product Type: Circuit Breaker
• Amperage: 125 A
• Poles: 3
• Voltage: 600 V

Practical tips for installation and maintenance:

• Verify your panel label confirms compatibility with a 3-pole, 600 V device and that 125 A fits within the designated circuit protection range.
• Keep a matched set on hand for assemblies where a direct PN match ensures consistent trip characteristics and wiring configuration.
• Confirm mounting style and bus connection compatibility with your specific Square D panel model to ensure a smooth replacement.

Why choose a genuine Square D breaker from AmpState?

• Authentic, factory-built protection that aligns with your existing Square D infrastructure.
• Dedicated support to verify fit and ensure seamless replacement, saving time on field service calls.
• Ready availability to minimize downtime when repairs are needed in the field or in inventory—offering reliable supply for maintenance programs.