Square D KA26125 125A 2-Pole 600 V Circuit Breaker

Meet the Square D KA26125 125A 2-Pole 600 V Circuit Breaker — a purpose-built overcurrent protector designed for demanding electrical systems. With a 125 amp current rating, two poles, and a 600 V maximum rating, this breaker provides reliable, dual-line protection for critical feeders and equipment.

Key specifications at a glance:

• Current rating: 125 A
• Poles: 2-pole design for simultaneous protection of both hot legs
• Voltage rating: Up to 600 V
• Part number: KA26125

Why this Square D breaker stands out

When you're upgrading an electrical panel or stocking spare parts, the KA26125 delivers fast, predictable interruption during overloads, helping to prevent damage to motors, conveyors, lighting, and other essential loads. The two-pole design ensures balanced protection on 240 V circuits and aligns with modern distribution setups that require coordinated disconnection of both live conductors.

Ideal use cases

• Feeder protection in commercial and light industrial panels rated for up to 600 V
• Replacement for legacy Square D installations where KA-series parts are specified
• New build-outs for equipment rooms, manufacturing lines, HVAC suites, and data-center infrastructure

Practical installation notes

Install in compatible Square D panels following the manufacturer’s wiring diagrams and local electrical codes. Ensure power is fully isolated before handling, observe correct alignment with bus stabs, and verify downstream loads correspond to the 125 A rating. Keep this part on hand as a ready-to-go replacement to minimize downtime during maintenance windows.

What makes KA26125 a reliable choice

Square D has a long track record in providing dependable protective devices, and the KA26125 continues that tradition with straightforward replacement, clear labeling for quick identification, and compatibility with a broad range of Square D distribution panels. By choosing the KA26125, you’re opting for a standard, widely stocked solution that simplifies maintenance planning and asset management in busy facilities.