Square D | MH36300CBA | Circuit Breaker | 300A | 3-Pole | 600V

Meet the Square D MH36300CBA circuit breaker—a purpose-built solution for demanding 3‑phase electrical systems. With a 300A rating, this 3‑pole device is designed to protect and manage high‑current circuits in industrial panels, service entrances, and retrofit projects where exact specifications matter.

This unit is ideal for maintenance, retrofit, and replacement scenarios where a precise match to existing equipment is required. Rely on the MH36300CBA when you need a proven, compatible component that aligns with your current electrical architecture and protective strategy.

Key specifications

• Amperage: 300A
• Poles: 3‑Pole
• Voltage: 600V
• Part number: MH36300CBA

Important compatibility note: Confirm fit and ratings before ordering. The part number MH36300CBA is the best reference for ensuring compatibility with your panel and system requirements.

Why this MH36300CBA is the right choice

• Exact spec alignment. When your installation calls for a 300A, 3‑pole, 600V breaker, this unit provides the precise characteristics needed to protect three‑phase circuits without altering other components.
• Streamlined maintenance and retrofits. Use this breaker to replace aging or failed units, or to upgrade to the required 300A capacity in existing panel configurations.
• Clear reference for sourcing. Rely on the part number MH36300CBA to match documentation, schematics, and OEM requirements, reducing uncertainty during procurement.

Practical scenarios include upgrading a three‑phase panel to handle higher load, conducting scheduled maintenance with OEM‑level replacements, or performing a precise retrofit where only matching specifications will do. By choosing the MH36300CBA, you’re selecting a component that aligns with your system’s design intent, supports consistent protection across your infrastructure, and helps minimize downtime through straightforward, spec‑accurate replacement.