Square D MHL36450 - 450 A, 3-Pole Circuit Breaker | AmpState

Meet the Square D MHL36450—a 450 A, 3-pole molded case circuit breaker built for dependable branch circuit overcurrent protection and short-circuit interruption in panelboards and loadcenters. Its compact molded-case design helps maximize panel space without compromising protection, making it a practical choice for a range of installations.

Why this breaker stands out

• Space-conscious design — a compact molded case that fits neatly within standard panel layouts, helping you optimize electrical room real estate.
• Thermal-magnetic trip unit — delivers stable, repeatable protection across a variety of fault conditions, reducing nuisance trips and improving reliability.
• OEM-compatible — designed to be fully compatible with matching Square D loadcenters and panelboards, simplifying replacements and upgrades.
• Versatile applications — suitable for residential, commercial, and light industrial environments where robust 3-phase protection is required.

What it protects and how it helps

As a 3-pole device rated at 450 A, the MHL36450 provides essential branch circuit overcurrent and short-circuit protection for three-phase systems. It acts as a reliable shield against fault currents, helping keep electrical systems safe and minimizing downtime in both new constructions and retrofit projects.

Technical details at a glance

• Manufacturer: Square D
• Part Number: MHL36450
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 450A
• Number of Poles: 3
• Application: Branch circuit overcurrent and short-circuit protection
• Compatibility: Compatible with matching OEM loadcenters and panelboards

For installations where space efficiency, consistent protection, and seamless compatibility with Square D panel systems matter, the Square D MHL36450 delivers dependable performance you can trust in residential, commercial, and light industrial settings.