Schneider Electric Residual Current Circuit Breaker with Overload Protection, 40A, 3-Pole, 300mA, Type C, Acti9 A9DV7740

Schneider Electric presents the A9DV7740 Residual Current Circuit Breaker with Overload Protection (RCBO) from the Acti9 iDD40N Series, purpose-built for reliable circuit protection in residential, industrial, and commercial distribution systems. This advanced unit combines thermal-magnetic overcurrent protection with sensitive earth leakage detection, providing a comprehensive safety solution for modern electrical installations.

The A9DV7740 operates with a 40A current rating and a 3-pole configuration, making it suitable for three-phase power distribution. Its 300mA trip sensitivity and Type C tripping characteristic ensure quick isolation during earth faults or overloads while minimizing nuisance tripping for mixed or inductive loads frequently found in industrial and commercial environments.

Combined overload and residual current protection for enhanced circuit safety. 40A current rating supports robust electrical loads. Features 3-pole operation ideal for balanced three-phase power systems. 300mA trip sensitivity quickly detects and isolates earth faults.

Type C tripping characteristic provides reliability for inductive and mixed load circuits. Designed for DIN rail mount installation, ensuring compatibility with standard distribution panels. Supports 400V AC supply voltage for a wide range of electrical applications.

Thermal-magnetic trip mechanism ensures effective protection against both overload and short-circuit events. 10kA breaking capacity for robust fault handling under demanding conditions. Padlockable toggle actuator enhances operational safety and control.

The RCBO’s compact, tunnel-terminal design and standard DIN rail mounting allow for quick integration or retrofit in modern electrical panels. Its high breaking capacity (10kA) and rated insulation voltage make it suitable for both residential and industrial distribution boards. Operating in temperature ranges from -5°C to 60°C and supporting relative humidity up to 95%, the device can withstand challenging environmental conditions.

Typical applications include power distribution in industrial facilities, commercial buildings, laboratories, and utilities where combined overload and earth leakage protection is required. Standards compliance with EN/IEC 60947-2 and RoHS ensures both performance and environmental responsibility, while a padlockable actuator adds security for maintenance operations.

Schneider Electric’s Acti9 technology delivers peace of mind with consistent operation, long service life, and safety features engineered for 21st-century power systems. Choose the A9DV7740 for installations demanding maximum uptime, user safety, and international standards compliance.

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