Square D MAL36400 - 400 A, 3-Pole Circuit Breaker | AmpState

Meet the Square D MAL36400, a 400 A, 3‑pole molded case circuit breaker designed to protect your panelboards and loadcenters from overcurrent and short circuits. Built for dependable performance in residential, commercial, and light industrial environments, this breaker pairs robust protection with streamlined installation.

Key features

• Compact molded case design maximizes panel space, helping you fit more protection without crowding the enclosure.
• Thermal‑magnetic trip unit delivers stable, repeatable protection across varying loads and temperature swings, reducing nuisance trips and ensuring consistent safety.
• OEM‑equal compatibility engineered to work with matching Square D load centers and panelboards for effortless substitution and reliable operation.
• Three‑pole configuration provides coordinated branch circuit protection for three‑phase systems, aligning with common panelboard architectures.

Why this design matters

• Precise trip behavior minimizes unexpected interruptions while safeguarding electrical circuits from overloads and short circuits.
• Space‑efficient form factor simplifies panel planning, especially in tighter installations or retrofit projects.
• Authentic Square D engineering guarantees compatibility with your existing OEM panels and downstream equipment.

Ideal for

• Electricians and electrical contractors configuring or upgrading panelboards in commercial buildings.
• Facility managers overseeing residential complexes or light industrial facilities needing reliable branch circuit protection.
• Maintenance teams responsible for compliant, long‑term safeguarding of critical electrical infrastructure.

Installation and compatibility

The MAL36400 is purpose‑built to fit Square D OEM load centers and panelboards, offering a seamless replacement path for aging or undersized protection. Its 3‑pole configuration is suitable for three‑phase distribution, and the 400 A rating makes it a solid choice for main or branch circuit protection in appropriately rated panels. Ensure your panel label supports the 400 A, 3‑pole thermal‑magnetic breaker and follow standard electrical practices when installing or replacing any molded case circuit breaker.

Specifications

• Manufacturer: Square D
• Part Number: MAL36400
• Type: Thermal‑magnetic molded case circuit breaker
• Amperage Rating: 400 A
• Number of Poles: 3
• Application: Branch circuit overcurrent and short‑circuit protection

Secure, OEM‑aligned protection for your panel system starts with the Square D MAL36400. Add it to your cart from AmpState and keep your electrical distribution running safely and reliably.