£392.09
The ABB DSE203NMB13A300 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 space-saving three-module device, making it ideal for industrial control panels, commercial switchboards and OEM machinery.
Designed for modern electrical installations, the DSE203NMB13A300 features Type A residual current protection, allowing it to detect both alternating and pulsating DC earth fault currents. Its electronic operating mechanism delivers dependable protection while reducing installation space and simplifying panel design.
With a 13 A B-curve rating, 300 mA residual current sensitivity and compatibility with three-phase 400/415 V AC systems, the DSE203NMB13A300 is ideal for industrial equipment, commercial electrical installations and machine protection where reliable circuit safety is essential.
Electronic RCBOs combine miniature circuit breaker and residual current protection within 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. Electronic residual current technology ensures consistent performance under demanding operating conditions.
| Current | 13 A |
|---|---|
| Phase | Three Phase |
| Type | 3P+N electronic residual current circuit breaker with overcurrent protection (eRCBO). |
| Residual Current Type | Type A (Includes protection against direct contacts at 30 mA). |
| Number of Poles | 3 poles plus neutral (neutral unswitched, terminals on left). |
| Connecting Capacity | Busbar 10 mm², rigid 1–25 mm², flexible 1–16 mm² conductors. |
| Operating Characteristic | Instantaneous trip for earth fault and overload protection. |
| Electrical Endurance | 10,000 cycles. |
| Mechanical Endurance | 20,000 cycles. |
| Power Supply Connection | Bottom. |
It protects three-phase electrical circuits against overloads, short circuits and earth leakage faults in commercial and industrial installations.
The device features a B characteristic, making it suitable for circuits with relatively low inrush currents.
The DSE203NMB13A300 provides Type A 300 mA residual current protection, detecting both alternating and pulsating DC residual currents.
It features a 3P+N configuration with an unswitched neutral.
It is designed for DIN rail installation inside industrial control panels, commercial switchboards and electrical distribution boards.
ABB DSE203N M electronic RCBOs are trusted by electricians, panel builders and industrial engineers for delivering dependable electrical protection, robust construction and reliable long-term performance.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...