Schneider Electric A9Z21240 Acti9 iID Residual Current Circuit Breaker (RCCB) 2P 40A 30mA Type A 220-240V AC IP20 White

The Schneider Electric A9Z21240 is a high-performance Residual Current Circuit Breaker (RCCB) from the Acti9 range, designed to provide reliable earth-leakage protection in residential and commercial electrical installations. This 2-pole device features a rated current of 40 A and a sensitivity of 30 mA, ensuring safety against electric shock and fire hazards caused by earth faults. With Type A protection, it is suitable for circuits containing electronic equipment that may generate pulsating DC fault currents.

Advantages

Compact design for DIN rail mounting saves space in distribution boards. Instantaneous tripping ensures rapid disconnection in the event of a fault. High breaking capacity (10 kA conditional short-circuit current) provides robust protection. Compliant with IEC 61008-1 standards for global acceptance.

Suitable for

• Residential electrical panels
• Commercial building distribution boards
• Industrial control systems requiring earth-leakage protection
• Circuits with sensitive electronic loads (Type A)

Key specifications

• Product Type: Residual Current Circuit Breaker (RCCB)
• Range: Acti9
• Device Short Name: iID
• Poles: 2P
• Rated Current (In): 40 A
• Earth-Leakage Sensitivity: 30 mA
• Earth-Leakage Protection Class: Type A
• Rated Operational Voltage (Ue): 220-240 V AC
• Network Frequency: 50/60 Hz
• Mounting Type: DIN Rail
• IP Degree of Protection: IP20
• Rated Impulse Withstand Voltage (Uimp): 6 kV
• Rated Conditional Short-Circuit Current (Inc): 10 kA
• Breaking Capacity (Im/Idm): 500 A
• Earth-Leakage Protection Time Delay: Instantaneous
• Standards: IEC 61008-1
• Connection Capacity (Rigid Wire): 1...35 mm²
• Connection Capacity (Flexible Wire): 1...25 mm²
• Operating Temperature Range: -5 to 60 °C
• Colour: White

Recommendations

For optimal safety, always install this RCCB in accordance with local electrical regulations and manufacturer guidelines. Ensure the device is rated appropriately for the circuit's load and fault conditions. Regular testing (e.g., monthly) of the test button is recommended to verify functionality.