Square D | QJL22100 | Circuit Breaker | 100A | 2-Pole | 240V

The Square D QJL22100 circuit breaker is a dependable 100-amp, 2-pole protection device designed for 240V circuits. Engineered for maintenance, retrofit, and replacement projects, this unit delivers precise current protection while maintaining seamless compatibility with Square D panels. Rely on a component that's built to help keep critical systems energized safely and reliably.

What makes it unique

• Precisely rated 100A, 240V two-pole design: ideal for protecting high-demand branches and multiwire circuits that require simultaneous disconnect of both hot legs.
• Direct-fit compatibility: part number QJL22100 is the best reference for matching breakers to your panel—verify fit and ratings before ordering.
• Square D reliability: built on the trusted engineering and safety standards of a leading electrical protection brand, ensuring consistent performance in everyday applications.
• Versatile use cases: excellent for retrofits in existing panels, replacements for failed breakers, or new installations needing a 2-pole, 100A, 240V solution.

Key specifications

• Amperage: 100A
• Poles: 2-Pole
• Voltage rating: 240V
• Part number: QJL22100

Why this breaker matters for your project

Choosing the right breaker isn't just about matching numbers—it's about ensuring reliable protection, predictable trip behavior, and easy maintenance. The QJL22100 delivers a dependable trip response for 240V circuits, smooth mechanical operation, and a design lineage you can trust. By sticking to the exact part number, you minimize compatibility risks and keep your electrical system compliant with panel specifications.

Practical tips for installation and use

• Before ordering, cross-check your panel model and the QJL series compatibility using the QJL22100 part number as the reference.
• Power down the main disconnect and de-energize the load side before replacing the breaker to ensure a safe installation.
• Follow local electrical codes and, if in doubt, consult a licensed electrician to perform panel work.
• After installation, clearly label the circuit to reflect updated protection status and ensure future maintenance clarity.