Square D 18KA - 20A, 600VAC / 250VDC, 3-Pole, Circuit Breaker

Power three-phase systems with precision using the Square D 18KA - 20A, 600VAC / 250VDC, 3-Pole Circuit Breaker. Built for demanding environments, this protective device delivers dependable overcurrent protection for panelboards, switchboards, and motor control centers where safety and reliability are non-negotiable.

• Current rating: 20 A
• Voltage rating: up to 600 VAC or 250 VDC
• Poles: 3-Pole
• Interrupting rating: 18 kA
• Configuration: Standard 3-pole circuit breaker suitable for industrial panel installations

Designed for versatility, this breaker fits seamlessly into distribution panels, switchboards, and control panels used in manufacturing lines, conveyors, and automated equipment. The three-pole design provides balanced protection across all three phases, helping prevent imbalanced loads and protecting wiring and motors from damaging faults.

Ideal for industrial, commercial, and OEM applications where dependable protection and safe operation are critical in distribution panels and motor control centers. With Square D’s track record of reliability, you’re choosing a solution built to withstand demanding environments and long service life.

Key use cases and practical insights

• Motor control centers and machine control panels in manufacturing facilities
• Three-phase distribution panels in industrial environments
• OEM equipment and retrofits where compact, reliable protective devices are needed

Tips for installation and optimization

• Verify DC load compatibility for circuits operating at 250 VDC
• Ensure correct three-phase alignment to maintain balanced protection
• Plan for future expansion by selecting a breaker with compatible interruption rating and phase configuration