Square D QOU1100 - 100 A, 1-Pole Bolt-On Circuit Breaker | AmpState

Meet the Square D QOU1100 — a 100 A, 1-pole bolt-on molded case circuit breaker engineered to deliver reliable branch-circuit protection for panelboards and load centers. Built for durability, it combines a secure bolt-on mounting with a thermal-magnetic trip unit that provides stable, repeatable protection across a range of conditions.

• Secure bolt-on mounting: a rigid, vibration-resistant bus connection that stays firmly seated through long service life and in applications with movement or vibration.
• Thermal-magnetic trip unit for consistent protection: the thermal element handles overloads while the magnetic trip responds instantly to short circuits, ensuring predictable breaker performance every time.
• OEM-compatible design: specifically engineered to pair with matching Square D OEM load centers and panelboards for a seamless fit and quiet operation.
• Versatile 1-pole, 100 A protection: ideal for safeguarding individual branch circuits in residential panels, light commercial setups, and retrofit projects where space and compatibility matter.

Practical applications and scenarios

• Residential service panels requiring a reliable 100 A, 1-pole breaker to protect lighting or receptacle circuits.
• Small commercial panels that demand a bolt-on solution with solid bus connections for long-term reliability.
• Panel upgrades or retrofits where matching Square D components ensure compatibility and consistent protection performance.

Technical snapshot

• Manufacturer: Square D
• Part Number: QOU1100
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 100 A
• Number of Poles: 1
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection