2CSB803401R1000 ABB DDA803 A-100/0.03 AP-R RCD Block 100 A 3P Type A AP-R 30 mA

Why Choose the ABB DDA803 A-100/0.03 AP-R RCD Block?

The ABB DDA803 A-100/0.03 AP-R is a high-performance three-pole Type A AP-R residual current device (RCD) block designed for on-site assembly with compatible ABB S800 miniature circuit-breakers. As part of the ABB DDA 800 series, it provides residual current protection for demanding commercial and industrial electrical distribution systems.

ABB's AP-R high-immunity characteristic combines Type A residual current detection with increased resistance to unwanted tripping, providing a strong balance between electrical safety and continuity of service. It detects sinusoidal alternating and pulsating direct residual currents while helping reduce nuisance operation caused by transient disturbances commonly encountered in modern installations.

With a rated current of 100 A, a rated residual operating current of 30 mA and a three-pole configuration, the DDA803 A-100/0.03 AP-R provides additional protection against direct contact as well as protection against indirect contact when correctly applied. When assembled with a compatible ABB S800 MCB, it combines residual current protection with the overload and short-circuit protection provided by the associated circuit-breaker.

Key Advantages

• AP-R high-immunity technology provides enhanced resistance to unwanted tripping.
• 100 A rated current for higher-current commercial and industrial distribution circuits.
• 30 mA rated residual operating current for sensitive earth fault protection.
• Three-pole configuration for compatible three-pole electrical distribution applications.
• Type A protection detects sinusoidal AC and pulsating DC residual currents.
• 30 mA sensitivity provides additional protection against direct contact when correctly applied.
• Designed for on-site assembly with compatible ABB S800 MCBs up to 100 A.
• Helps balance personnel protection, equipment protection and continuity of service.

Key Features

• ABB DDA 800 AP-R residual current device block series.
• 100 A rated current.
• 30 mA residual current sensitivity.
• Three-pole configuration.
• Type A AP-R high-immunity residual current characteristic.
• Detection of sinusoidal alternating and pulsating direct residual currents.
• 400 / 415 / 690 V rated voltage.
• Rated frequency of 50–60 Hz.
• IP2X protection rating.
• Designed for compatible ABB S800 MCBs up to 100 A.
• Commercial and industrial application.
• Complies with IEC/EN 60947-2 Annex B.

High-Immunity Residual Current Protection

The ABB AP-R range is designed for applications where conventional residual current protection may be exposed to transient disturbances capable of causing unwanted tripping. Its high-immunity behaviour improves resistance to nuisance operation while retaining Type A detection of sinusoidal alternating and pulsating direct earth fault currents, helping maintain continuity of service in modern electrical installations.

The 30 mA residual current sensitivity provides additional protection against direct contact when correctly applied, while the 100 A rated current makes the DDA803 A-100/0.03 AP-R suitable for substantial three-pole distribution circuits. Combined with a compatible ABB S800 MCB, it provides an integrated solution for residual current, overload and short-circuit protection.

Typical Applications

• Commercial electrical distribution systems.
• Industrial electrical installations.
• Distribution boards using compatible ABB S800 miniature circuit-breakers.
• Circuits requiring 30 mA additional residual current protection.
• Installations where continuity of service and resistance to unwanted tripping are important.
• Circuits containing electronic equipment capable of producing pulsating DC residual currents.