Murray MQ220 - 20A, 2-Pole, Miniature Circuit Breaker (MCB)

Meet the Murray MQ220 20A 2-Pole Miniature Circuit Breaker (MCB) — a compact, reliable safeguard for electrical distribution in demanding environments. With a 20-amp current rating and a true two-pole design, this MCB provides simultaneous protection for both conductors, helping prevent dangerous imbalances and ensuring safer starts and shutdowns for connected equipment.

• Current rating: 20A
• Poles: 2-Pole
• Breaker type: Miniature Circuit Breaker (MCB)

Engineered for industrial, commercial, and OEM applications, the MQ220 is well-suited for use in panelboards, switchboards, and control panels where dependable overcurrent protection matters most. It acts quickly to interrupt fault current, reducing the risk of insulation damage, component wear, and unplanned downtime in critical systems such as motor control centers, conveyors, pumps, and lighting circuits.

Why choose the Murray MQ220 for your electrical protection needs?

• Dual-line protection: The 2-pole design ensures both conductors trip together, delivering coordinated protection for two hot legs and enhancing overall safety.
• Targeted protection where it counts: A dedicated 20A rating is ideal for branch circuits and control circuits that require reliable overcurrent interruption without nuisance tripping.
• Versatile installation: Suitable for integration into standard distribution panels and motor control environments, enabling flexible protection strategy across various applications.

Practical use cases and scenarios

• Protecting motor control circuits in manufacturing lines and packaging equipment where quick disconnection minimizes damage during faults.
• Guarding power feeds to pumps, fans, and conveyors in commercial or industrial facilities.
• Safeguarding lighting and auxiliary circuits within control panels and switchboards to maintain safe, stable operation.

Tips for optimal performance

• Match the MQ220 with complementary protective devices to form a balanced, multi-tier protection scheme for your electrical distribution system.
• Regularly inspect for secure connections and proper seating in panel enclosures to prevent unwanted trips or arcing.
• Plan replacements in pairs when upgrading or servicing distribution panels to maintain consistent protection across circuits.