Square D MAL36300 - 300 A, 600 V, 3-Pole Circuit Breaker | AmpState

Square D MAL36300 is a 300A, 600V, 3-pole molded case circuit breaker engineered for dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. Built to endure the demands of modern electrical installations, it pairs robust protection with compact design for efficient panel layouts.

Key advantages that matter in real-world setups

• Compact molded-case design saves valuable panel space, making it easier to fit wiring and accessories without sacrificing performance.
• Thermal-magnetic trip unit delivers stable, repeatable protection by accurately responding to overloads and short circuits, reducing nuisance trips and enhancing system reliability.
• 3-pole configuration supports three-phase circuits, ensuring all poles trip together for safer de-energization in multi-phase systems.
• OEM-compatible designed to work with matching Square D OEM load centers and panelboards, providing a reliable fit and consistent protective characteristics.
• Versatile application ideal for residential, commercial, and light industrial environments where robust protection at up to 600V is required.

This MAL36300 module is purpose-built for protecting branch circuits against overcurrent and short circuits, helping to prevent damage to wiring, equipment, and connected loads. Whether you’re upgrading an aging panel, installing a new service, or stocking spare parts for field reliability, this 300A, 600V, 3-pole breaker offers precise trip behavior and enduring performance in a compact package.

Technical snapshot

• Manufacturer: Square D
• Part Number: MAL36300
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 300A
• Voltage Rating: 600V
• Number of Poles: 3
• Application: Branch circuit overcurrent and short-circuit protection

Choose the Square D MAL36300 when you need a dependable, space-conscious solution that aligns with your existing panelboard or load center infrastructure while delivering clear, predictable protection performance across a range of residential, commercial, and light industrial applications.