Schneider Electric A9D33616 Residual Current Circuit Breaker with Overcurrent Protection, 16A, 2P, IP40

The Schneider Electric A9D33616 is a professional-grade residual current circuit breaker with overcurrent protection (RCBO), designed to provide comprehensive safety for electrical installations. This 2-pole device integrates both short-circuit and overload protection with earth leakage detection, ensuring that your electrical circuits remain secure against common faults. With a compact design and a 16A current rating, it is an essential component for modern electrical distribution boards in both residential and commercial settings.

Advantages

The primary advantage of this RCBO is its dual-functionality, which combines the features of a miniature circuit breaker and a residual current device into a single, space-saving unit. By utilizing advanced technology, it offers high reliability in detecting leakage currents and preventing damage from overcurrents. Its robust construction ensures long-term durability, while the standardized dimensions allow for easy integration into existing distribution systems without requiring significant modifications.

Suitable for

• Residential electrical distribution boards
• Commercial office power circuits
• Protection of individual lighting or socket circuits
• Preventing electrical hazards in indoor environments

When it may not be suitable

This device is not intended for outdoor use where it would be exposed to direct weather conditions, as it carries an IP40 rating. It is also not suitable for high-current industrial machinery that exceeds the 16A rated capacity.

Key specifications

• Rated current: 16 A
• Number of poles: 2
• Protection rating: IP40
• Width: 36 mm
• Depth: 73 mm
• Weight: 125 g

How to use

The device should be installed by a qualified electrician onto a standard DIN rail within an electrical distribution panel. Ensure that the supply voltage matches the specifications of the device before connection. Once installed, the circuit breaker can be toggled manually using the front-mounted lever. Regular testing using the integrated test button is recommended to verify the functionality of the earth leakage protection mechanism.

What to consider before purchase

• Verify that the 16A rating is appropriate for your specific circuit load
• Ensure the installation space accommodates the 36 mm width
• Confirm that the environment is dry and protected from moisture

Usage recommendations

Regularly test the device using the test button at least twice a year to ensure the earth leakage protection remains operational and responsive.