Part of the Schneider Electric Acti9 C120N series, the A9N18389 is a 3-pole miniature circuit breaker engineered for robust protection in residential and small commercial electrical installations. This device is specifically designed to safeguard circuits from damaging overcurrent conditions, ensuring operational continuity and equipment longevity.

Technical details

• Series: Acti9 C120N
• Number of Poles: 3
• Current Rating: 125 A (at 30 °C ambient temperature)
• Tripping Curve: D curve, suitable for loads with high inrush currents such as motors and transformers.
• Voltage Rating: Verify against manufacturer datasheet for specific AC/DC voltage ratings.
• Interrupting Capacity: Verify against manufacturer datasheet for specific breaking capacity (kA).
• Terminal Type: Screw terminals for secure connections.
• Mounting Type: DIN rail mountable for standard electrical panel installations.
• Operating Temperature Range: Verify against manufacturer datasheet for specific environmental operating limits.

Applications & compatibility

The Schneider A9N18389 is commonly deployed in distribution boards for residential buildings, small office spaces, and light industrial facilities. Its D-curve characteristic makes it ideal for protecting circuits feeding inductive loads like HVAC systems, pumps, and small motor-driven equipment where temporary high starting currents are expected.

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 A9N18389 or contact our technical team for cross-reference assistance with compatible Acti9 components.