The Schneider Electric A9Z78440, a component of the Acti9 iID series, functions as a 4-pole Residual Current Circuit Breaker (RCCB). This device is engineered to interrupt electrical circuits when it detects residual currents, thereby mitigating the risks of electric shock and fire hazards. It is designed for installation in electrical distribution systems to enhance personnel and equipment safety.

Technical details

• Series: Acti9 iID
• Type: Residual Current Circuit Breaker (RCCB)
• Number of Poles: 4
• Nominal Current Rating: 40A
• Function: Detects and interrupts residual currents to prevent electrical hazards.
• Protection Type: Residual current protection, overcurrent protection (when used with a suitable overcurrent device).
• Voltage Rating: Verify against manufacturer datasheet for specific voltage class (e.g., 230/400V AC).
• Breaking Capacity: Verify against manufacturer datasheet for specific fault current interruption rating.

Applications & compatibility

This RCCB is suitable for use in residential, commercial, and industrial electrical installations. It is commonly integrated into main distribution boards and sub-distribution panels to provide essential protection for circuits supplying lighting, power outlets, and fixed equipment. Compatibility should be confirmed with specific electrical system designs and local electrical codes.

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 Electric A9Z78440 or contact our technical team for cross-reference assistance with compatible Acti9 series components.