Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
2CSR255170R1205 ABB DSH201B20A30 RCBO 1P+N Type B 20 A Type A 30 mA 6 kA
ABB DSH201B20A30 is a 1P+N Type A RCBO with a 20 A Type B characteristic, 30 mA residual-current sensitivity and 6 kA short-circuit capacity for combined residual-current and overcurrent protection.
£57.84
Why Choose the ABB DSH201B20A30 RCBO?
The ABB DSH201B20A30 is a compact and reliable 1P+N residual current circuit breaker with overcurrent protection (RCBO) designed to protect single-phase circuits against overloads, short circuits and residual earth-fault currents. As part of the ABB DSH200 RCBO family, it combines residual-current and overcurrent protection in one DIN-rail device for efficient electrical distribution and circuit protection.
This RCBO features a Type B tripping characteristic, a rated current of 20 A and Type A residual-current detection. Its 30 mA rated residual operating current provides additional protection against electric shock, while Type A detection responds to sinusoidal AC residual currents and pulsating DC residual currents.
With a rated short-circuit capacity of 6 kA and a 1P+N configuration, the DSH201B20A30 is suitable for single-phase electrical distribution systems in residential, commercial and similar installations. Its compact DIN-rail design combines essential circuit and residual-current protection while helping simplify distribution-board installation.
Key Advantages
- Combines residual-current and overcurrent protection in one RCBO.
- 20 A rated current with Type B tripping characteristic.
- 30 mA residual-current sensitivity for additional protection against electric shock.
- Type A detection for AC and pulsating DC residual currents.
- 6 kA rated short-circuit capacity for dependable circuit protection.
- Compact 1P+N DIN-rail design for electrical distribution boards.
Key Features
- ABB DSH200 RCBO family.
- 1P+N configuration.
- 20 A rated current.
- Type B tripping characteristic.
- Type A residual-current protection.
- 30 mA rated residual operating current.
- 6 kA rated short-circuit capacity.
- DIN-rail mounting for compact electrical distribution systems.
Combined Residual-Current and Overcurrent Protection
RCBOs such as the ABB DSH201 combine the functions of a miniature circuit breaker and a residual-current protective device. This allows one device to protect a circuit against overload and short-circuit currents while also detecting potentially hazardous earth leakage currents.
Type A residual-current protection enables the DSH201B20A30 to detect both sinusoidal alternating and pulsating direct residual currents. Combined with its thermal-magnetic overcurrent protection, this makes the device suitable for modern electrical circuits containing conventional and electronically controlled loads.
Typical Applications
- Residential electrical distribution boards.
- Commercial building electrical installations.
- Single-phase final circuits.
- General-purpose electrical circuits.
- Circuits requiring 30 mA additional residual-current protection.
- DIN-rail consumer units and distribution panels.
Technical Specifications
| Series | DSH201 |
|---|---|
| ABB order code | 2CSR255170R1205 |
| Product group | DS200 / DSH200 RCBO |
| Product type | Residual current circuit breaker with overcurrent protection (RCBO) |
| Number of poles | 1P+N |
| Rated current | 20 A |
| Tripping characteristic | B |
| Residual-current type | Type A |
| Rated residual operating current | 30 mA |
| Rated short-circuit capacity | 6 kA |
| Mounting type | DIN rail |
Frequently Asked Questions
What is the ABB DSH201B20A30 used for?
The ABB DSH201B20A30 provides combined overload, short-circuit and residual-current protection for single-phase electrical circuits.
What is the rated current of the DSH201B20A30?
The RCBO has a rated current of 20 A and uses a Type B tripping characteristic.
What residual-current sensitivity does this RCBO provide?
The DSH201B20A30 has a rated residual operating current of 30 mA, providing additional residual-current protection for applicable circuits.
What does Type A residual-current protection mean?
Type A protection detects sinusoidal AC and pulsating DC residual currents, making it suitable for circuits containing many modern electronic loads.
What is the short-circuit rating of the DSH201B20A30?
The ABB DSH201B20A30 has a rated short-circuit capacity of 6 kA.
Trusted ABB Circuit Protection
ABB DSH200 RCBOs combine residual-current and overcurrent protection in compact DIN-rail devices, providing dependable circuit protection for residential, commercial and electrical distribution applications.
