Square D MAL36900 - 900 A, 3-Pole Circuit Breaker | AmpState

Introducing the Square D MAL36900 900A, 3-pole molded case circuit breaker—engineered for dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. With a robust 900-amp rating and three-pole configuration, this breaker is built to handle high-demand, three-phase feeder circuits while preserving compact panel layout.

• 900A the right size for heavy feeders: This unit delivers trusted protection for high-load circuits, helping prevent equipment damage and electrical faults in demanding environments.
• Three-pole design: Perfect for three-phase systems, ensuring coordinated protection across all phases and reliable trip performance under fault conditions.
• Thermal-magnetic trip unit: Combines thermal overload sensing with magnetic trip capability for fast, repeatable protection—reducing nuisance trips and maintaining consistent performance across temperature changes.
• Molded-case, space-efficient construction: Optimized for panel density, allowing more efficient use of panel space without compromising protection or reliability.
• OEM-compatible installation: Designed to be compatible with matching OEM load centers and panelboards, preserving fit, mounting, and trip characteristics for straightforward retrofits or new installations.
• Versatile applications: Suitable for residential, commercial, and light industrial panels where reliable branch circuit overcurrent and short-circuit protection is essential.

Ideal applications and scenarios

Use the MAL36900 in panelboards and load centers that require robust three-phase protection for high-current feeders. It’s well-suited for commercial electrical rooms, light industrial panels, and large residential service panels where a single, dependable 3-pole breaker can control substantial loads—from large HVAC equipment to motor-driven systems and distribution feeders.

Technical details at a glance

• Manufacturer: Square D
• Part Number: MAL36900
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 900A
• Number of Poles: 3
• Application: Branch circuit overcurrent and short-circuit protection
• Compatibility: Matches OEM load centers and panelboards for reliable fit and performance

For installers and facility managers seeking durable, high-capacity protection, the Square D MAL36900 delivers one strong, reliable solution. Its precise thermal-magnetic trip behavior, combined with a compact molded-case design and OEM compatibility, helps ensure safe, uninterrupted power distribution in demanding environments. If your project calls for a proven 3-pole breaker with industrial-ready capability, this MAL36900 is built to meet those expectations—reliably and consistently.