£410.63
The ABB DSE203NMB6A100 is a premium 3P+N electronic residual current circuit breaker with overcurrent protection (eRCBO), engineered to provide comprehensive protection against overloads, short circuits and earth leakage faults in three-phase electrical systems. As part of the dependable ABB DSE203N M series, this compact device combines multiple protection functions into a single unit, making it ideal for commercial, industrial and OEM applications.
The DSE203NMB6A100 enhances electrical safety by monitoring residual currents while also protecting against overload and short-circuit conditions. Its electronic residual current sensing delivers reliable fault detection, helping safeguard personnel, equipment and installations whilst reducing panel space and simplifying wiring.
Featuring a 6 A Type B trip characteristic, 100 mA Type A residual current sensitivity and a 10 kA breaking capacity, this RCBO is well suited to three-phase distribution boards, industrial machinery, automation systems and commercial electrical installations. Its DIN rail mounting and compact three-module construction make installation quick and efficient.
The ABB DSE203NMB6A100 integrates miniature circuit breaker and residual current protection into a single compact device, reducing installation complexity while delivering dependable protection against overloads, short circuits and earth leakage faults.
Its Type B tripping characteristic makes it suitable for applications requiring rapid disconnection during fault conditions, while the electronic residual current monitoring improves electrical safety and helps maintain reliable operation in industrial and commercial environments.
| 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. |
| Operating Characteristic | Instantaneous trip. |
| Connection Type and Size | Busbar 10 mm², rigid 1–25 mm², flexible 1–16 mm². |
| Electrical Endurance | 10,000 cycles. |
| Mechanical Endurance | 20,000 cycles. |
| Position of Neutral Terminals | Left side. |
| Additional Protection | Earth fault and indirect contact protection; 30 mA versions include direct contact protection. |
It provides combined overcurrent and residual current protection for three-phase electrical circuits in industrial, commercial and OEM applications.
Type B devices provide rapid tripping at lower magnetic fault current levels, making them suitable for protecting sensitive circuits with low inrush currents.
The 100 mA Type A residual current protection helps detect earth leakage faults and provides enhanced protection for equipment and installations.
The device protects three phases with an unswitched neutral using a 3P+N configuration.
It is designed for DIN rail installation within commercial, industrial and OEM distribution boards and electrical control panels.
ABB DSE203N M RCBOs are trusted by panel builders, electrical contractors and industrial engineers for delivering dependable circuit protection, compact installation and compliance with recognised international electrical standards.
● 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...