The Schneider Electric A9N18503 is a 2-pole miniature circuit breaker from the Acti9 C120H series, engineered for robust electrical protection. This unit is designed to safeguard circuits in residential and small commercial installations, offering reliable performance with its 125 A rated current and D-curve tripping characteristic.

Technical details

• Series: Acti9 C120H
• Poles: 2
• Rated Current: 125 A at 30°C
• Trip Curve: D
• Trip Unit Technology: Thermal-magnetic
• Application: Miniature circuit breaker for overcurrent and short-circuit protection
• Housing Material: Thermoplastic
• Mounting Type: DIN rail

Applications & compatibility

This circuit breaker is suitable for protecting electrical circuits in a variety of settings, including residential distribution boards, small commercial buildings, and light industrial applications. It is commonly specified for circuits with high inrush currents, such as those found in motor control or lighting systems where a D-curve offers enhanced protection against nuisance tripping.

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 A9N18503 or contact our technical team for cross-reference assistance with compatible Acti9 components.