Square D QO220CP - 20A, 240VAC, 2-Pole, Miniature Circuit Breaker (MCB)

Square D QO220CP is a compact, dependable 20A, 240V miniature circuit breaker (MCB) designed to protect electrical circuits in demanding environments. Built for panelboards, switchboards, and control panels, this 2-pole device is a trusted component of the Square D QO family, delivering reliable overcurrent protection in industrial, commercial, and OEM applications.

• Current rating: 20A
• Voltage rating: 240VAC
• Poles: 2-Pole
• Breaker type: Miniature Circuit Breaker (MCB)

Why the 2-pole design matters

With a two-pole configuration, the QO220CP interrupts both hot legs of a 240V circuit simultaneously. This reduces arcing risk, enhances safety, and ensures consistent protection for both conductors — a critical advantage for feeders and motor control circuits in panelboards and switchboards.

Ideal use scenarios

• Distribution panels and control panels in commercial and industrial settings
• Motor control centers and equipment racks in manufacturing environments
• OEM assemblies and custom electrical enclosures requiring reliable 240V protection

What sets it apart

The QO220CP is part of Square D’s proven QO line, designed for straightforward installation, consistent performance, and compatibility with Square D load centers. Its 20A rating makes it a precise fit for branch circuits and shared feeders, helping maintain system safety without unnecessary trips in everyday operations.

Practical guidance for installation and compatibility

To maximize reliability, pair the QO220CP with compatible Square D QO-series equipment in appropriate panelboards, switchboards, or control panels. Confirm that the circuit requirements align with a 20A, 240VAC two-pole breaker, and ensure correct mounting within an appropriate enclosure. This MCB is intended for applications where dependable overcurrent protection and safe operation are priorities in distribution and motor control environments.

What you can expect in real-world use

• Solid, repeatable protection for 240V circuits in commercial, industrial, and OEM settings
• Simplified wiring and installation within compatible Square D panel systems
• Reliable performance over time, contributing to safer electrical distribution and fewer nuisance trips