Square D MH36350 - 350 A, 3-Pole Plug-In Circuit Breaker | AmpState

Introducing the Square D MH36350 — a 350 A, 3-pole plug-in molded case circuit breaker designed for dependable branch circuit overcurrent and short-circuit protection in panelboards and loadcenters. Built for fast, straightforward installations and easy maintenance, this unit supports residential, commercial, and light industrial electrical setups with confidence.

Why this breaker stands out

• Fast plug-in connection: simplifies installation and replacement, reducing downtime when panels need service or upgrades.
• Thermal-magnetic trip unit: combines a thermal element for calibrated, long-term overload protection with a magnetic element for instantaneous response to short circuits, delivering stable, repeatable protection across varying load conditions.
• High-current, three-pole design: 350 A rating on a 3-pole frame supports substantial three-phase circuits, suitable for larger feeders and distribution within panelboards.
• OEM-compatible: engineered to fit with matching Square D OEM load centers and panelboards for seamless integration and reliable performance.

Ideal use scenarios

• Main feeder protection in large panelboards and loadcenters for both new installations and upgrades
• Replacement or retrofit in OEM Square D panels to maintain consistent protection and electrical coordination
• Three-phase distribution sections in commercial facilities and light industrial environments requiring robust overcurrent and short-circuit protection
• Situations where rapid plug-in maintenance minimizes downtime during panel servicing

Compatibility and installation considerations

• Designed to be used with matching OEM load centers and panelboards for dependable system coordination
• Plug-in mounting style facilitates quick swaps and reduces field wiring complexity

Technical specifications

• Manufacturer: Square D
• Part Number: MH36350
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 350 A
• Number of Poles: 3
• Mounting Style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection

Choose the Square D MH36350 when you need a reliable, high-capacity plug-in breaker that pairs cleanly with Square D load centers, delivering precise protection and fast serviceability for demanding panel configurations.