Square D QOU320 20A 3P 240V Circuit Breaker | AmpState

The Square D QOU320 is a 20 Amp, 3-pole, 240-volt circuit breaker designed to deliver reliable protection in panelboards, load centers, and electrical distribution systems. Sold by AmpState, this direct-part-number match ensures you’re getting the exact device you need, streamlining procurement for maintenance teams, panel builders, and spare inventory managers.

Direct-fit reliability that keeps your panels in service

Designed to align precisely with your existing QOU320 configurations, this breaker minimizes fit issues and downtime. A correct 3-pole, 240V, 20A profile means fewer field adjustments and faster swaps during routine maintenance or emergency replacements. When every minute counts in busy facilities, having the exact part you need matters—and this QOU320 delivers just that.

Key specifications

• Part Number: QOU320
• Manufacturer: Square D
• Type: Circuit Breaker
• Amperage: 20 A
• Poles: 3
• Voltage: 240 V
• Applications: panelboards, load centers, and electrical distribution

What problems this solves

• Ensures consistent protection for 3-phase circuits without compatibility guesswork.
• Reduces ordering mistakes by providing a precise part-number match for quick inventory replenishment.
• Supports reliable maintenance workflows by offering a genuine replacement that fits standard Square D panel configurations.

Who it’s ideal for

• Electrical maintenance teams managing panelboards and distribution systems
• Panel builders seeking dependable, drop-in replacements for existing installations
• Facilities managers and procurement teams maintaining spare parts inventories

Fit, compatibility, and quick help

To confirm fit, rely on the exact specifications: 3-pole, 240V, 20A, part number QOU320. If you’re unsure about compatibility with your specific panel or distribution setup, send us a message and we’ll help verify the match and ensure a safe, compliant replacement.

Practical tips for installation and use

• Power down the panel and lockout/tagout before replacement.
• Verify that the new breaker’s rating matches the circuit it protects (20 A, 240 V, 3 poles).
• Handle the breaker gently to avoid internal damage; store in a clean, dry environment until installation.
• Consult your facility’s electrical codes and panel labeling to ensure proper installation within your system.