The Schneider Electric Acti 9 C120N miniature circuit breaker, model A9N18393, is a 4-pole thermal-magnetic protection device engineered for robust electrical distribution in residential and small commercial environments. This breaker is part of the Acti 9 series, known for its reliability and ease of installation in demanding electrical systems. Its D-curve characteristic makes it suitable for circuits with high starting currents, such as those found in motor control applications.

Technical details

• Series: Acti 9 C120N
• Number of Poles: 4P
• Rated Current: 125A
• Trip Curve: D Curve
• Protection Type: Thermal-magnetic trip unit
• Application: Electrical distribution and circuit protection
• Intended Use: Residential and small commercial settings
• Voltage Rating: Verify with manufacturer datasheet for specific voltage class (e.g., 230/400V AC)

Applications & compatibility

This 125A, 4-pole circuit breaker is commonly deployed in electrical panels for facility power distribution, protecting circuits that feed equipment with significant inrush current requirements. Its D-curve rating ensures it will not nuisance trip during the startup phase of motors, pumps, or other inductive loads found in HVAC systems, small manufacturing equipment, and building management systems.

Available from Industrial Automation Co as new, refurbished, or surplus stock, backed by a 2-year warranty with same-day shipping on in-stock items. Request a quote for the Schneider A9N18393 or contact our technical team for cross-reference assistance with compatible Acti 9 components.