Square D MI320 - 20A, 240VAC, 3-Pole, Circuit Breaker

Introducing the Square D MI320 — a rugged 20A, 240V AC, 3-pole circuit breaker designed for dependable overcurrent protection in demanding electrical environments.

Key features:

• Three-pole configuration for true 3-phase protection, ensuring all live conductors trip together in panelboards, switchboards, and control panels.
• 20 ampere current rating at up to 240 VAC to handle motor loads and branch circuits common in industrial settings.
• Versatile for panelboards, switchboards, and control panels in distribution setups and motor control centers.
• Designed for industrial, commercial, and OEM applications where safe operation and reliable protection matter.

Why this matters for your system:

• Protects equipment and wiring from overcurrent, preventing insulation damage and unplanned downtime.
• Delivers clear, predictable disconnection behavior in 3-phase systems, reducing the risk of damage to motors and drives.
• Compact, standardized form factor fits common electrical distribution enclosures and MCCs.

Ideal use cases:

• Motor control centers and machine panels in manufacturing facilities.
• Distribution panels in commercial buildings with 3-phase service.
• OEM equipment where a reliable 3-pole, 20A breaker is needed for integrated protection.

Compared to single- or two-pole solutions, the MI320’s 3-pole design provides simultaneous disconnection of all conductors, which is essential for 3-phase circuits and safer maintenance. It’s a practical choice when you need consistent protection across multiple lines without sacrificing space or installation ease.

Practical tips for installation and operation:

• Verify compatibility with your panelboard or MCC frame and ensure the correct mounting accessories are used for Square D MI320.
• Pair with matching devices in your electrical distribution scheme to maintain coordinated protection across the system.
• Keep spare units on hand for quick replacement in critical applications to minimize downtime.

Trust the Square D MI320 for reliable, industry-grade overcurrent protection in demanding environments. This 20A, 240VAC, 3-Pole breaker is built to endure the rigors of industrial and commercial electrical distribution, giving you peace of mind and consistent protection for your critical loads.