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ABB DSE203NMB25A100 3+N 10kA RCBO B25 100mA 2TAZ234414R3255
£215.65
Why Choose the ABB DSE203NMB25A100 RCBO?
The ABB DSE203NMB25A100 is a premium 3P+N electronic residual current circuit breaker with overcurrent protection (eRCBO), engineered to provide dependable protection against overloads, short circuits and earth leakage faults in three-phase electrical installations. Part of the trusted ABB DSE203N M series, this compact device combines multiple protective functions into a single unit, making it an ideal solution for commercial, industrial and OEM electrical systems.
Designed to maximise electrical safety and installation efficiency, the DSE203NMB25A100 continuously monitors residual current whilst protecting circuits against overload and short-circuit conditions. By integrating residual current and overcurrent protection within one device, it reduces distribution board space requirements, simplifies installation and improves overall system reliability.
Featuring a 25 A Type B trip characteristic, 100 mA Type A residual current sensitivity and a 10 kA breaking capacity, the ABB DSE203NMB25A100 is ideally suited to protecting three-phase distribution systems, industrial machinery, automation equipment and commercial electrical installations. Its compact three-module DIN rail mounted design enables fast installation within modern switchboards and control panels.
Key Advantages
- Compact 3P+N electronic RCBO combining overload, short-circuit and residual current protection.
- 25 A Type B trip characteristic for rapid protection of sensitive circuits.
- 100 mA Type A residual current protection.
- 10 kA breaking capacity suitable for demanding commercial and industrial installations.
- Provides reliable protection for personnel and electrical equipment.
- DIN rail mounted design saves valuable space within distribution boards.
Key Features
- ABB DSE203N M electronic RCBO series.
- Rated current: 25 A.
- Trip characteristic: Type B.
- Residual current sensitivity: 100 mA.
- Residual current type: Type A.
- Configuration: 3P+N with unswitched neutral.
- Rated short-circuit breaking capacity: 10 kA.
- Compact three-module DIN rail mounted construction.
Reliable Protection for Three-Phase Electrical Installations
The ABB DSE203NMB25A100 combines miniature circuit breaker functionality with advanced electronic residual current protection within a single compact device. This simplifies installation whilst delivering dependable protection against overloads, short circuits and earth leakage faults across commercial and industrial electrical systems.
Its Type B tripping characteristic provides rapid magnetic operation for circuits with relatively low inrush currents, making it ideal for protecting sensitive electrical equipment, automation systems and three-phase distribution circuits requiring dependable fault protection.
Typical Applications
- Commercial distribution boards.
- Industrial electrical installations.
- OEM machinery.
- Automation and process control systems.
- Manufacturing facilities.
- Three-phase power distribution.
Technical Specifications
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| Current | 25 A | |
|---|---|---|
| Phase | Three Phase | |
| Poles | 3-pole + N | |
| Device Type | RCBO | |
| Trip Curve | B curve | |
| Residual Current | 100 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 + neutral (unswitched neutral). | |
| Protection | Overcurrent, short-circuit, earth fault, indirect and additional direct contact (30 mA versions). | |
| Electrical Endurance | 10,000 cycles. | |
| Mechanical Endurance | 20,000 cycles. | |
| Terminal Connection | Bottom connection, rigid 1–25 mm², flexible 1–16 mm², busbar 10 mm². | |
| Instantaneous Operating Characteristic | Yes. | |
| Position of Neutral Terminal | Left. | |
| Weight | 0.549 kg. |
Frequently Asked Questions
What is the ABB DSE203NMB25A100 used for?
It provides combined overcurrent and residual current protection for three-phase electrical circuits in industrial, commercial and OEM installations.
What does the Type B trip characteristic mean?
Type B devices provide rapid magnetic tripping at relatively low fault current levels, making them suitable for protecting circuits with low inrush currents.
What does the 100 mA residual current rating provide?
The 100 mA Type A residual current protection detects earth leakage faults and helps improve electrical safety whilst protecting equipment and electrical installations.
How many poles does this RCBO protect?
The device protects three phases with an unswitched neutral using a 3P+N configuration.
Where is the DSE203NMB25A100 typically installed?
It is designed for DIN rail installation within commercial distribution boards, industrial control panels and OEM electrical equipment.
Trusted by Electrical Professionals Worldwide
ABB DSE203N M RCBOs are trusted by electrical contractors, panel builders and industrial engineers for delivering reliable circuit protection, compact installation and compliance with recognised international electrical standards.
