The Schneider Electric Acti9 NG125L Miniature Circuit Breaker (MCB) is a 4-pole, low-voltage protection device engineered for robust electrical system safety. This specific unit, identified by the part number 18857, belongs to the Acti9 NG125L series and is designed to safeguard circuits against overcurrents and short circuits.

Technical Details

• Series: Acti9 NG125L
• Poles: 4
• Rated Current: 10A
• Tripping Curve: D Curve (provides high inrush current immunity and robust short-circuit protection)
• Voltage Rating: Verify against manufacturer datasheet for specific AC/DC voltage compatibility.
• Interrupting Capacity: Verify against manufacturer datasheet for specific breaking capacity (kA).
• Terminal Type: Verify against manufacturer datasheet for specific connection type (e.g., screw, cage clamp).
• Operating Temperature Range: Verify against manufacturer datasheet for environmental operating limits.

Applications & Compatibility

This Schneider Electric MCB is commonly deployed in commercial and industrial electrical distribution panels, protecting sensitive equipment and wiring in applications such as lighting circuits, motor control circuits, and general power distribution. Its D-curve characteristic makes it suitable for circuits with high starting currents, like those found in HVAC systems, pumps, and small motor loads.

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 18857 or contact our technical team for cross-reference assistance with compatible Acti9 components.