Square D | KA26150AC | Circuit Breaker | 150A | 2-Pole | 600V | 25kA | Plug-In

Meet the Square D KA26150AC circuit breaker—a trusted 150A, 2-pole plug-in solution designed for demanding panels where fast service and dependable protection matter. Built to align with KA-series plug-in systems, this unit is ideal for maintenance, retrofit, and replacement projects that require exact compatibility with your existing Square D setup.

Why this breaker stands out

Engineered for both performance and simplicity, the KA26150AC delivers robust short-circuit protection without complicating installation. The plug-in design speeds field service, reduces downtime, and minimizes panel downtime during upgrades. With a 25 kA interrupting rating and a 600V maximum, it’s prepared to handle high-demand environments while maintaining safe, reliable disconnect on both hot legs.

Key specifications

• Amperage: 150 A
• Poles: 2-Pole
• Voltage: 600 V
• Interrupting rating: 25 kA
• Type: Plug-In
• Model reference: KA26150AC

Compatibility and installation tips

Compatibility is key when replacing breakers. Use the KA26150AC part number as the primary reference to verify fit with your panel. This unit is designed for Square D panels that accept KA-series plug-in breakers. Before installation, confirm panel model and bus compatibility to ensure safe, reliable operation.

Ideal use cases

• Maintenance and routine service in existing Square D installations
• Retrofits where a higher-amperage, two-pole solution is required
• Repairs or replacements in commercial or industrial panels demanding reliable 600V protection

Practical considerations and best practices

• Power down the equipment and follow lockout/tagout procedures before removing or installing the breaker
• Inspect the panel’s acceptance of KA-series plug-in breakers to prevent compatibility issues
• Ensure the breaker seats firmly and the terminals are secure to maintain consistent electrical contact
• Retain the KA26150AC as your primary reference when checking compatibility with any panel model

Choose the Square D KA26150AC when you need a precise, plug-in 150A, 2-pole solution that delivers fast service, solid protection, and compatibility with existing KA-series panels. It’s a practical, reliable upgrade path for maintenance, retrofit, or replacement projects—designed to keep your electrical system protected and operating smoothly.