£410.63
The ABB DSE203NMC6A300 is a high performance 3P+N electronic residual current circuit breaker with overcurrent protection (eRCBO) designed to provide reliable protection against overloads, short circuits and earth leakage faults in commercial and industrial electrical installations. As part of the advanced ABB DSE203N M series, it combines multiple protection functions within a compact three-module device, making it an ideal solution for modern distribution boards and control panels.
Engineered for dependable circuit protection, the DSE203NMC6A300 offers Type A residual current protection, enabling detection of both alternating and pulsating DC earth fault currents. Its compact design simplifies installation while maintaining excellent performance, helping electricians, panel builders and facility managers improve safety and maximise available panel space.
With a 6 A C-curve rating, 300 mA residual current sensitivity and a 415 V AC three-phase supply, this electronic RCBO is suitable for protecting industrial machinery, distribution circuits and commercial electrical systems requiring dependable overcurrent and earth leakage protection.
Electronic RCBOs combine the functions of an MCB and RCD within a single device, providing comprehensive protection against overloads, short circuits and earth leakage faults. This helps reduce installation space while improving electrical safety and system reliability.
The ABB DSE203N M series is designed for commercial, industrial and OEM applications where dependable protection, easy installation and long service life are essential. Its electronic residual current technology delivers consistent performance across demanding operating conditions.
| Current | 6 A |
|---|---|
| Phase | Three Phase |
| Function | 3P+N electronic residual current circuit breaker with overcurrent protection (eRCBO). |
| Residual Current Type | Type A. |
| Number of Poles | 3 poles plus neutral (neutral unswitched). |
| Rated Cross-Section | Solid-core 1–25 mm², multi-wired 1–16 mm². |
| Connection Type | Bottom power supply connection, busbar or cable. |
| Operating Characteristic | Instantaneous trip. |
| Mechanical Endurance | 20,000 cycles. |
| Electrical Endurance | 10,000 cycles. |
| Position of Neutral Terminals | Left side. |
It provides overload, short circuit and earth leakage protection for three-phase electrical circuits in commercial and industrial installations.
The device has a 6 A rated current with a C characteristic trip curve.
The DSE203NMC6A300 offers Type A protection, detecting alternating and pulsating DC residual currents with a 300 mA sensitivity.
It features a 3P+N configuration with an unswitched neutral.
It is designed for installation on a DIN rail inside distribution boards, switchboards and industrial control panels.
ABB DSE203N M electronic RCBOs are trusted by electricians, panel builders and industrial engineers for delivering dependable circuit protection, high safety standards and long-term reliability.
● Service Agreements
Credit Accounts
Our service agreements are built to support long term procurement relationships. By working closely with engineering teams and procurement departments, we help streamline purchasing processes while ensuring consistent access to critical components and sourcing support when it matters most.
● frequently asked questions
At Led Controls Ltd we help engineers source the right automation and control gear with confidence. below are quick answers to what we are asked most often.
We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
● latest blog
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...