Why Choose the ABB DSE203NMB10A300 Electronic RCBO?
The ABB DSE203NMB10A300 is a compact and highly reliable 3P+N electronic residual current circuit breaker with overcurrent protection (eRCBO) designed to protect three-phase electrical installations against overloads, short circuits and earth leakage faults. As part of the advanced ABB DSE203N M series, it combines multiple protection functions into a compact three-module device, making it an excellent solution for commercial distribution boards, industrial switchgear and OEM machinery.
Designed for modern electrical installations, the DSE203NMB10A300 features Type A residual current protection, allowing it to detect both alternating and pulsating DC earth fault currents. Its electronic operating technology provides dependable protection while helping reduce installation space and simplifying panel design.
With a 10 A B-curve rating, 300 mA residual current sensitivity and compatibility with three-phase 400/415 V AC systems, the DSE203NMB10A300 is ideal for industrial equipment, commercial electrical installations and machine protection where reliable circuit safety is essential.
Key Advantages
- Compact 3P+N electronic RCBO combining MCB and RCD protection.
- 10 A B-curve ideal for circuits with low inrush currents.
- 300 mA Type A residual current protection.
- Provides protection against overloads, short circuits and earth leakage faults.
- Space-saving three-module construction for modern switchboards.
- Reliable ABB engineering for commercial and industrial applications.
Key Features
- ABB DSE203N M electronic RCBO series.
- 10 A rated current.
- B characteristic trip curve.
- 300 mA Type A residual current sensitivity.
- 3P+N configuration with unswitched neutral.
- 10 kA rated short-circuit capacity.
- DIN rail mounting for quick installation.
- Mechanical endurance of approximately 20,000 operating cycles.
Reliable Protection for Three-Phase Electrical Systems
Electronic RCBOs combine miniature circuit breaker and residual current protection into a single device, providing comprehensive protection against overloads, short circuits and earth leakage faults while reducing installation space and simplifying electrical installations.
The ABB DSE203N M series has been developed for commercial, industrial and OEM applications where dependable protection, easy installation and long service life are essential. Its electronic residual current technology ensures consistent performance under demanding operating conditions.
Typical Applications
- Commercial distribution boards.
- Industrial switchgear.
- OEM machinery and automation systems.
- Motor control panels.
- Manufacturing facilities.
- Three-phase electrical distribution systems.
