ABB DSE201 B20 A30 RCBO providing 20 A Type B overcurrent protection with 30 mA residual current protection in a compact one-module DIN rail device.
£77.63
The ABB 2CSR255151R1205, also known as the DSE201 B20 A30 - N Blue, is a compact 20 A Type B RCBO (Residual Current Circuit Breaker with Overcurrent Protection) that combines the functions of an MCB and RCD into a single DIN rail module. Designed for residential, commercial and light industrial installations, it provides comprehensive protection against overloads, short circuits and earth leakage faults while occupying minimal panel space.
With a 30 mA residual current sensitivity, the DSE201 offers additional protection against electric shock while helping reduce the risk of electrical fires caused by earth faults. Its compact one-module design makes it particularly suitable for modern distribution boards where space is at a premium.
The ABB DSE201 series is engineered to IEC standards and features thermal-magnetic overcurrent protection, making it ideal for protecting final circuits supplying sockets, lighting and general-purpose electrical loads.
The ABB DSE201 RCBO combines overload, short-circuit and residual current protection within a single device, simplifying installation while improving electrical safety. By disconnecting the circuit rapidly during earth faults or abnormal current conditions, it helps protect both people and electrical equipment from potentially hazardous situations.
Its compact one-module construction makes it an excellent choice for modern consumer units and distribution boards where space efficiency and reliable protection are equally important. The integrated neutral conductor and functional earth wire further simplify installation and operation.
| Current | 20 A |
|---|---|
| Phase | Single Phase |
| Manufacturer | ABB |
| Series | DSE201 |
| Model | DSE201 B20 A30 - N Blue |
| Product ID | 2CSR255151R1205 |
| EAN | 8012542658429 |
| Product type | RCBO (Residual Current Circuit Breaker with Overcurrent Protection) |
| Rated current | 20 A |
| Tripping characteristic | Type B |
| Residual current sensitivity | 30 mA |
| Rated voltage | 230–240 V AC |
| Configuration | 1P+N |
| Breaking capacity | 6 kA |
| Mounting type | DIN rail |
| Terminal type | Screw terminals |
| Width | 18 mm |
| Height | 100 mm |
| Depth | 69 mm |
| Standards | IEC 61009-1, IEC 61009-2-2, AS/NZS 61009-1 |
| Net weight | approx. 165 g |
The ABB 2CSR255151R1205 is an RCBO that protects electrical circuits against overloads, short circuits and earth leakage faults.
This RCBO has a 20 A rated current with a Type B tripping characteristic.
The device provides 30 mA residual current protection for additional protection against electric shock.
The ABB DSE201 is designed for quick installation onto a standard DIN rail.
The device complies with IEC 61009-1, IEC 61009-2-2 and AS/NZS 61009-1 standards.
ABB DSE201 RCBOs are trusted by electricians, panel builders and contractors worldwide for delivering dependable overload, short-circuit and residual current protection in residential, commercial and industrial electrical installations.
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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...