Square D QO320VH 20A 3P 240V Circuit Breaker, QO, Plug-On | AmpState

Square D QO320VH is a 20-amp, 3-pole, 240-volt circuit breaker designed for dependable protection in panelboards, load centers, and electrical distribution systems. This QO plug-on model is ideal for both new installations and replacement projects, helping you keep your BOM aligned to the original part number and ensuring consistent performance across your electrical infrastructure.

Key specifications at a glance

• Manufacturer: Square D
• Part number: QO320VH
• Product type: Circuit Breaker
• Amperage: 20 A
• Poles: 3
• Voltage: 240V
• Technology: QO Plug-On
• Availability: AmpState

Why this breaker stands out

The QO320VH is purpose-built for quick, reliable protection of 240V circuits in panelboards and load centers. Its plug-on design simplifies installation, dramatically reducing downtime during replacements or upgrades. By selecting the authentic QO family, you’re choosing a compatible, robust solution that aligns with your existing Square D infrastructure and maintains the integrity of your electrical distribution.

Ideal use cases

• Replacement within existing square-d footage of panelboards and load centers that use QO components.
• Stock spare to keep your BOM in sync with the original part number for maintenance teams or service contractors.
• New installations where 240V, 3-pole protection is required for multi-wire or three-phase distribution setups.

Compatibility and support

If you’re unsure about fit or compatibility with your panel, our team at AmpState can help confirm the match. Need help matching a part number or confirming compatibility? Message us and we’ll help you confirm fit.

Practical tips for installation and use

• Ensure the panelboard accepts QO plug-on breakers and supports a 3-pole configuration for 240V circuits.
• Confirm the original BOM part number matches QO320VH to maintain traceability and service records.
• Keep a spare QO320VH on hand for quick field replacements, minimizing downtime on critical circuits.
• Handle with care during installation to preserve mechanical integrity of the plug-on connection and bus interface.

Shop confidently with AmpState for authentic Square D protection that aligns with your existing electrical distribution. The QO320VH delivers reliable 20 A, 3-pole, 240V circuit protection designed to keep your systems running smoothly and your maintenance workflow streamlined.