Square D QOU2100 - 100 A, 240 V, 2-Pole Bolt-On Circuit Breaker | AmpState

The Square D QOU2100 is a rugged, 100A, 240V, 2-pole bolt-on molded case circuit breaker designed to safeguard your electrical system right at the panelboard or loadcenter. Built for dependable branch circuit overcurrent and short-circuit protection, it delivers solid performance where reliability matters most—in homes, small businesses, and light industrial setups.

• Bolt-on mounting provides a secure, vibration-resistant bus connection, reducing the risk of loose contacts in panels that experience movement or equipment activity.
• Thermal-magnetic trip unit delivers stable, repeatable protection by combining thermal protection for gradual overcurrents with magnetic trip for instantaneous response on severe faults.
• 2-pole, 100A, 240V rating aligns with standard residential and multi-branch commercial circuits, offering reliable protection where two hot legs are present.
• OEM-compatible design ensures seamless integration with matching Square D OEM loadcenters and panelboards, simplifying replacements and upgrades.

Designed for practical, long-term protection, the QOU2100 helps you prevent damaging faults from propagating through the panel while keeping maintenance straightforward. Its robust construction and precise trip characteristics are ideal for installations where reliability and consistency are non-negotiable.

Ideal applications and scenarios

• Residential panelboard upgrades where a sturdy, easy-to-install 2-pole breaker is required
• Commercial subpanels and light industrial panels needing dependable branch-circuit protection
• Replacement of aging or failed breakers in existing Square D OEM loadcenters and panelboards

Why choose the Square D QOU2100? It combines firm, secure mounting with a proven thermal-magnetic protection scheme, delivering repeatable performance across a range of loads and conditions. If you’re planning a panel upgrade, service panel maintenance, or a new installation that demands reliable overcurrent protection on 240V circuits, this 2-pole bolt-on breaker offers a precise, compatible solution.