Square D KHL3612517DC 125A 3-Pole 500 V Circuit Breaker

The Square D KHL3612517DC 125A 3-Pole 500 V Circuit Breaker is engineered for reliable protection in demanding 3‑phase electrical systems. This 125‑amp device safeguards industrial panels and distribution setups, helping to prevent overloads and short circuits across three conductors.

Key specifications

• Current rating: 125 A
• Poles: 3
• Voltage rating: 500 V
• Part number: KHL3612517DC
• Brand: Square D

Why this configuration matters

A 3‑pole design provides balanced protection for three‑phase circuits, which is essential for motors, pumps, and other equipment that rely on even phase distribution. The 500 V rating makes it suitable for higher‑voltage distribution environments, while the 125 A rating aligns with mid‑to‑large load centers. With this exact part (KHL3612517DC), you get a precise fit for compatible Square D panels, ensuring dependable operation and straightforward replacement without guesswork.

Ideal use cases

• Three‑phase motor circuits in manufacturing lines and processing equipment
• Panelboard and distribution board protection in commercial or light‑industrial settings
• Branch circuit protection for equipment with higher startup currents that require solid, reliable protection

Practical considerations

• Ensure compatibility by matching the part number KHL3612517DC with your Square D panel or enclosure
• Verify conductor sizing and wiring practices align with local codes and safety standards
• Label clearly and perform regular inspections to facilitate quick diagnostics during maintenance or fault events