£410.63
The ABB DSE203NMB6A10 is a compact electronic residual current circuit breaker with overcurrent protection (RCBO) designed to protect three-phase electrical circuits against overloads, short circuits and earth leakage faults. Part of the ABB DSE203N M series, this combined protection device is suitable for commercial, industrial and machine-building applications where dependable circuit protection and efficient use of distribution-board space are essential.
By combining residual current and overcurrent protection within a single DIN rail device, the DSE203NMB6A10 helps simplify electrical panel design and installation. Its electronic residual current detection supports reliable fault monitoring, while the compact 3P+N configuration makes it suitable for protecting three-phase circuits with a neutral conductor.
With a rated current of 6 A, a Type B tripping characteristic and 10 mA Type A residual current sensitivity, the ABB DSE203NMB6A10 is designed for circuits requiring enhanced protection against electric shock and earth leakage. Its 10 kA short-circuit breaking capacity supports use in demanding commercial and industrial distribution systems.
The ABB DSE203NMB6A10 monitors electrical circuits for excessive current and leakage to earth. When an overload, short circuit or residual current fault is detected, the device disconnects the protected circuit to help reduce the risk of equipment damage, electrical shock and fire.
Its Type B characteristic is intended for circuits with relatively low inrush currents, while the sensitive 10 mA residual current threshold offers enhanced additional protection. This makes the RCBO particularly useful for selected circuits supplying sensitive equipment or installations where a lower residual operating current is required.
| Current | 6 A |
|---|---|
| Phase | Three Phase |
| Function | 3P+N eRCBO with residual current and overcurrent protection. |
| Residual Current Type | Type A. |
| Poles | 3 poles plus unswitched neutral. |
| Operating Characteristic | Instantaneous trip. |
| Connection | Bottom power supply connection. |
| Terminal Capacity | Busbar 10 mm²; rigid 1–25 mm²; flexible 1–16 mm² conductors. |
| Position of Neutral Terminals | Left side. |
| Mechanical Endurance | 20,000 cycles. |
| Electrical Endurance | 10,000 cycles. |
The ABB DSE203NMB6A10 protects three-phase electrical circuits against overloads, short circuits and earth leakage faults.
The DSE203NMB6A10 has a rated current of 6 A.
A Type B tripping characteristic is generally suited to circuits with low starting currents, such as resistive loads and selected lighting or control circuits.
This model provides 10 mA Type A residual current protection, detecting sinusoidal AC and pulsating DC leakage currents.
It is designed for DIN rail installation within commercial or industrial electrical distribution boards and control panels.
ABB circuit protection devices are widely specified by electrical contractors, panel builders and industrial engineers for dependable performance, compact installation and effective protection of modern electrical systems.
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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...