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ABB DSE203NMB25A10 3+N 10kA RCBO B25 10mA 2TAZ234414R1255
£215.65
Why Choose the ABB DSE203NMB25A10 RCBO?
The ABB DSE203NMB25A10 is a compact and dependable 3P+N electronic residual current circuit breaker with overcurrent protection (eRCBO) designed to safeguard three-phase electrical installations against overloads, short circuits and earth leakage faults. Part of the advanced ABB DSE203N M series, it combines overcurrent and residual current protection into a single three-module device, making it an excellent solution for commercial, industrial and OEM electrical systems.
Featuring an unswitched neutral, electronic residual current detection and a compact DIN rail mounted design, the DSE203NMB25A10 simplifies switchboard construction while providing reliable long-term protection for electrical installations. It is engineered for applications where dependable circuit protection and enhanced personnel safety are essential.
With a 25 A Type B tripping characteristic, 10 kA short-circuit breaking capacity and 10 mA Type A residual current sensitivity, this RCBO is well suited to protecting three-phase circuits supplying resistive and other low inrush current loads while delivering enhanced protection against electric shock.
Key Advantages
- Combined overload, short-circuit and residual current protection in one compact device.
- 25 A Type B tripping characteristic for circuits with relatively low inrush currents.
- 10 mA Type A residual current protection for enhanced electrical safety.
- 10 kA short-circuit breaking capacity for dependable fault protection.
- Compact three-module design saves valuable distribution board space.
- Suitable for commercial, industrial and machine-building applications.
Key Features
- ABB DSE203N M electronic RCBO.
- 3 poles + neutral (unswitched neutral).
- 25 A rated current.
- Type B overcurrent characteristic.
- 10 mA Type A residual current protection.
- 10 kA breaking capacity.
- Electronic residual current monitoring.
- DIN rail mounting.
Reliable Three-Phase Circuit Protection
The ABB DSE203NMB25A10 continuously monitors electrical circuits for overloads, short circuits and earth leakage currents. If a fault is detected, the RCBO disconnects the circuit quickly to help protect electrical equipment, minimise downtime and improve operator safety.
Its Type B tripping characteristic is ideal for circuits supplying resistive loads and equipment with relatively low starting currents. The integrated 10 mA Type A residual current protection detects both alternating current (AC) and pulsating DC leakage currents, providing enhanced protection where increased electrical safety is required.
Typical Applications
- Commercial distribution boards.
- Industrial switchboards.
- Machine building and OEM equipment.
- Three-phase power distribution systems.
- Manufacturing and automation facilities.
- Critical circuits requiring enhanced residual current protection.
Technical Specifications
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| Poles | 3-pole + N | |
|---|---|---|
| Current | 25 A | |
| Phase | Three Phase | |
| Device Type | RCBO | |
| Trip Curve | B curve | |
| Residual Current | 10 mA | |
| RCD Type | Type A | |
| 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). | |
| Overcurrent Protection Rating | B25 (25 A, instantaneous characteristic). | |
| Connection Type | Bottom power supply connection. | |
| Terminal Capacity | Busbar 10 mm²; rigid conductors 1–25 mm²; flexible conductors 1–16 mm². | |
| Mechanical Endurance | 20,000 cycles. | |
| Electrical Endurance | 10,000 cycles. | |
| Position of Neutral Terminals | Left. |
Frequently Asked Questions
What is the ABB DSE203NMB25A10 used for?
It protects three-phase electrical circuits against overloads, short circuits and earth leakage faults using combined RCBO technology.
What is the rated current?
The ABB DSE203NMB25A10 has a rated current of 25 A.
What does the Type B characteristic indicate?
Type B devices are intended for circuits with relatively low inrush currents, making them suitable for resistive loads and selected control equipment.
What residual current protection does this RCBO provide?
It provides 10 mA Type A residual current protection capable of detecting AC and pulsating DC earth leakage currents.
Where is the DSE203NMB25A10 typically installed?
It is designed for DIN rail installation within commercial and industrial electrical distribution boards, switchboards and control panels.
Trusted Electrical Protection from ABB
ABB DSE203N M electronic RCBOs are trusted by electrical contractors, panel builders and industrial engineers for their compact design, dependable fault protection and long service life.
