£392.09
The ABB DSE203NMC25A10 is a compact and dependable 3P+N electronic residual current circuit breaker with overcurrent protection (eRCBO) designed to protect three-phase electrical circuits against overloads, short circuits and earth leakage faults. As part of the ABB DSE203N M series, it combines residual current and overcurrent protection within a single DIN rail device, helping simplify distribution-board design and reduce panel space requirements.
Designed for commercial, industrial and machine-building installations, the DSE203NMC25A10 provides reliable protection for electrical equipment and personnel. Its electronic residual current monitoring supports accurate fault detection, while the 3P+N configuration makes it suitable for three-phase circuits incorporating a neutral conductor.
With a rated current of 25 A, a Type C tripping characteristic, 10 mA Type A residual current sensitivity and a 10 kA short-circuit breaking capacity, the ABB DSE203NMC25A10 is suitable for circuits supplying equipment with moderate starting currents while providing enhanced protection against electric shock.
The ABB DSE203NMC25A10 monitors the protected circuit for excessive current and leakage to earth. When an overload, short circuit or residual current fault occurs, the RCBO disconnects the affected circuit to help reduce the risk of equipment damage, electrical fire and electric shock.
Its Type C operating characteristic is suitable for circuits supplying equipment with moderate inrush currents, including selected motors, lighting systems, control equipment and industrial machinery. The sensitive 10 mA residual current threshold provides enhanced additional protection where a lower leakage-current trip level is required.
| Current | 25 A |
|---|---|
| Phase | Three Phase |
| Function | 3P+N electronic residual current circuit breaker with overcurrent protection (eRCBO). |
| Poles Protected | 3 poles + neutral (neutral unswitched). |
| Residual Current Type | Type A. |
| Operating Characteristic | Instantaneous. |
| Connecting Capacity | 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. |
| Earthing Switch Type | Undelayed. |
The ABB DSE203NMC25A10 protects three-phase electrical circuits against overloads, short circuits and earth leakage faults.
The DSE203NMC25A10 has a rated current of 25 A.
A Type C tripping characteristic is suitable for circuits with moderate starting currents, including selected motors, lighting systems and control equipment.
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 DSE203N M electronic RCBOs are widely specified by electrical contractors, panel builders and industrial engineers for compact installation, dependable fault protection and reliable performance in 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...