Square D MHL36600 - 600 A, 3-Pole Circuit Breaker | AmpState

When you need reliable, high-capacity protection for demanding three-phase circuits, the Square D MHL36600 delivers. This 600 A, 3-pole molded case circuit breaker is engineered to provide dependable branch circuit overcurrent and short-circuit protection in panelboards and loadcenters, making it a solid choice for commercial and light industrial environments as well as residential setups with large electrical loads. Available from AmpState, it combines precision protection with space-efficient design.

Why this breaker stands out

• Compact molded-case design maximizes panel space and simplifies installation in crowded electrical spaces.
• Thermal-magnetic trip unit delivers stable, repeatable protection across varying currents and ambient conditions, reducing nuisance trips and ensuring fast response to faults.
• Three-pole configuration ideal for three-phase systems, providing coordinated protection for large feeders, motors, and heavy-duty equipment.
• 600 A rating supports substantial branch circuits, helping safeguard sizable electrical loads without compromising system reliability.
• OEM compatibility designed to work with matching Square D OEM loadcenters and panelboards, helping maintain listing and seamless integration.

Technical snapshot

• Manufacturer: Square D
• Part Number: MHL36600
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 600 A
• Number of Poles: 3
• Application: Branch circuit overcurrent and short-circuit protection

Ideal use cases

• Protection for large three-phase panelboards and load centers in light industrial facilities, warehouses, and mechanical rooms.
• Retrofits or replacements where consistent thermal-magnetic protection is required for high-current feeders.
• Residential-commercial projects with substantial electrical loads that demand a robust, space-efficient breaker solution.
• Systems that benefit from OEM-compatible components to preserve panelboard performance and safety listings.

Practical considerations

• Ensure your installation uses matching Square D OEM loadcenters and panelboards to maintain listing and optimal fit.
• Plan for space optimization in crowded panels—the compact molded-case design eases conductor routing and minimizes panel depth requirements.
• Match this 3-pole unit to three-phase circuits that require coordinated protection, especially where motor loads or HVAC equipment are involved.