ABB DSE201 M 1P+N 20A 30mA Type AC RCBO
The DSE201 M C20 AC30 is a 1P+N electronic residual current circuit breaker with overcurrent protection (RCBO), combining overload and short-circuit protection with 30mA earth fault sensitivity in a single-module width. It protects end-user single-phase circuits against both overcurrent faults and sinusoidal AC earth leakage currents, making it a compact, space-saving choice for distribution boards across UAE residential and commercial installations.
Key Features
- 1P+N configuration in a single 18mm module width, saving space in compact distribution boards
- 20A rated current with Type C tripping characteristic for lighting and general power circuits
- 30mA Type AC residual current sensitivity for protection against indirect and direct contact
- 10kA rated residual breaking capacity with unswitched neutral and flying earth lead for flexible installation
- Genuine ABB quality — reliable protection to IEC 61009-1 and IEC 61009-2-2 standards
Technical Specifications
| Specification |
Details |
| Brand |
ABB |
| Model |
DSE201 M C20 AC30 |
| Rated Current (In) |
20A |
| Poles |
1P+N |
| Tripping Characteristic |
Type C |
| Residual Current Type |
Type AC |
| Rated Residual Current |
30mA |
| Rated Ultimate Breaking Capacity (Icu) |
15kA |
| Rated Residual Breaking Capacity |
10kA |
| Voltage |
230/240V AC |
| Mounting |
DIN Rail |
Applications
- Combined overcurrent and earth leakage protection for lighting circuits in residential DBs
- Socket and power circuit protection requiring additional direct-contact protection
- Space-constrained distribution boards in villas and apartment consumer units across the UAE
- Upgrade of existing MCB-only circuits to add RCD protection without extra board space
FAQ
-
What is an RCBO, and how is it different from an MCB or RCCB?
An RCBO (Residual Current Breaker with Overcurrent protection) combines an MCB and an RCCB in one device — it protects a single circuit against both overload/short-circuit and earth leakage, instead of needing separate devices.
-
What does the 30mA sensitivity rating mean?
30mA RCBOs are sized for personnel/shock protection on final circuits.
-
Why use an RCBO instead of a shared RCCB for multiple circuits?
An RCBO protects one circuit only, so a leakage fault on that circuit trips just that RCBO rather than a shared RCCB covering several circuits — this avoids losing power to unaffected circuits when a fault occurs on one.
-
Can I install this myself?
No. RCBOs are wired into a live distribution board and must be installed by a licensed electrician in line with UAE wiring regulations.
