QOU320 - 20 Amp Circuit Breaker

QOU320 - 20 Amp Circuit Breaker

The Square D QOU320 is a compact, high-performance 3-pole, 20-amp circuit breaker designed for diverse applications—from OEM setups to retrofit panels. With dependable over-current protection and flexible mounting options, it’s built for safety and adaptability in modern electrical systems.

Key Features and Benefits

• Dependable over‑current protection: Offers both instantaneous and delayed trip functions for comprehensive circuit safety.
• Clear trip detection: Features Square D’s VisiTrip® design, signaling when power has been interrupted.
• Flexible mounting options: Includes unit‑mount (bolt‑on) or plug‑in variants—perfect for factory OEM use or retrofit panels.
• Manual control feature: Enables manual circuit opening via internal magnetic strips for added safety.
• Compact footprint: Ideal for installations where space is at a premium.

Technical Specifications

• Current Rating: 20 A at 120/240 VAC, also rated at 48 V DC
• Number of Poles: 3‑pole
• Interrupting Capacity:
  • 10 kA at 120/240 VAC
  • 5 kA at 48 V DC
• Mounting Type: Unit‑mount (bolt‑on) or plug‑in models available
• Wire Compatibility: Accepts AWG 14 to AWG 2 copper or aluminum wires
• Torque Requirement: 45 lbf·in (≈ 5.1 N·m)
• Dimensions (H × W × D):
  • 4.05″ × 2.25″ × 2.95″ (≈102.9 × 57.2 × 74.9 mm)
• Net Weight: Approx. 17.6 oz (499 g)

Material Compliance and Certifications

• Certifications: UL Listed, CSA Certified, and compliant with IEC standards for assured safety and international compatibility.
• Environmental Standards: RoHS- and REACh‑compliant, free from mercury, toxic heavy metals, and halogens. Meets Schneider Electric’s Green Premium sustainability criteria.

Suitability

• The QOU320 shines in a range of settings—from standalone OEM equipment to home panel upgrades or commercial electrical systems. If you’re working with factory machinery, control panels, or three-phase installations requiring reliable short‑circuit and overload protection, this breaker offers solid performance in a compact form. Its flexible mounting and manual override features make it especially useful in spaces where retrofit or limited panel space is a concern.