Square D | KIL36125 | Circuit Breaker | 125A | 3-Pole | 600V

Meet Square D's KIL36125 Circuit Breaker—a robust 125A, 3-Pole protection device designed for 600V systems. This unit is ideal for maintenance, retrofit, and replacement projects where precise specifications matter, ensuring you maintain safe, compliant electrical distribution.

• Amperage: 125A
• Poles: 3-Pole
• Voltage: 600V
• Part number: KIL36125
• Best reference for compatibility: The manufacturer’s part number is your quickest way to verify fit with your panel or switchgear.

Why choose this Square D circuit breaker? It’s built to pair with Square D panels and distribution equipment, offering reliable overcurrent protection across three phases. The KIL36125 is designed for retrofit and replacement tasks where matching specs matters, reducing guesswork and downtime on critical circuits.

Ideal use cases

• Replacing a failed 3-pole, 125A breaker in an industrial or commercial panelboard
• Retrofits on 3-phase feeders delivering up to 600V to motors, pumps, conveyors, or large loads
• New installations where a 3-pole, 125A, 600V protection device is required for three-phase systems

Important ordering note

Before you order, confirm fit and ratings. The KIL36125 reference is the most reliable indicator of compatibility with your Square D panel or switchgear. If you’re replacing an existing part, double-check the panel labeling and the original catalog number to ensure a seamless match.

Practical tips for installation and maintenance:

• Turn off power to the circuit and follow all local codes and safety procedures. Installation should be performed by a qualified electrician.
• Verify circuit labeling and upstream protection to avoid nuisance trips or under-protection.
• Store replacement breakers in a clean environment to prevent corrosion or contamination before installation.