Part of the Schneider Electric Acti 9 iID series, the A9R21440 is a four-pole Residual Current Circuit Breaker (RCCB) designed for robust protection in electrical installations. This device provides essential safety against indirect contact and fire risks, commonly specified for commercial buildings and industrial control panels.

Technical details

• Series: Acti 9 iID
• Number of Poles: 4
• Tripping Type: Type A
• Rated Current: 40 A
• Rated Residual Operating Current (IΔn): 30 mA
• Rated Voltage: 400V AC
• Frequency: 50/60 Hz
• Breaking Capacity (IΔm): 10 kA
• Terminal Type: Screw terminals
• Mounting Type: DIN rail

Applications & compatibility

The Schneider A9R21440 is suitable for use in a wide range of applications requiring reliable earth leakage protection. This includes residential distribution boards, commercial lighting circuits, and motor control centers in manufacturing environments. It is designed to protect circuits where both sinusoidal alternating currents and pulsating direct currents may be present.

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 A9R21440 or contact our technical team for cross-reference assistance with compatible Acti 9 components.