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2CSR255164R1205 ABB DS301CTB20A30 DS301CT B20 A30 RCBO 1P+N 20A 30mA 6kA
ABB DS301CTB20A30 is a DS301CT 1P+N Type A RCBO with a 20 A rated current, B tripping characteristic, 30 mA residual-current sensitivity and 6 kA short-circuit breaking capacity.
£131.55
Why Choose the ABB DS301CTB20A30 RCBO?
The ABB DS301CTB20A30, type code DS301CT B20 A30, is a compact 1P+N residual current circuit breaker with overcurrent protection (RCBO) designed to provide combined protection against overloads, short circuits and earth fault currents. As part of the ABB DS300 RCBO product group, it combines overcurrent and residual-current protection in a single modular device for low-voltage electrical distribution.
This RCBO has a rated current of 20 A, a 30 mA rated residual operating current and a Type B tripping characteristic. Its Type A residual-current characteristic responds to sinusoidal alternating residual currents and pulsating DC residual currents, providing protection suitable for appropriately specified circuits containing modern electrical and electronic equipment.
With a 6 kA short-circuit breaking capacity and 1P+N configuration, the DS301CT B20 A30 provides dedicated protection for individual single-phase final circuits. Its modular construction supports efficient integration into residential, commercial and other low-voltage distribution systems requiring combined overcurrent and Type A residual-current protection.
Key Advantages
- Combines residual-current, overload and short-circuit protection in one device.
- 20 A rated current for appropriately rated final circuits.
- 30 mA residual operating current for additional protection against electric shock.
- Type A residual-current characteristic for sinusoidal AC and pulsating DC residual currents.
- Type B tripping characteristic suited to circuits with relatively low starting and inrush currents.
- 6 kA short-circuit breaking capacity for dependable fault protection.
- 1P+N configuration for single-phase circuits with neutral.
- Part of ABB's DS300 RCBO range for modular low-voltage circuit protection.
Key Features
- ABB DS301CT RCBO.
- 1P+N pole configuration.
- 20 A rated current.
- 30 mA rated residual operating current (IΔn).
- Type A residual-current protection.
- B tripping characteristic.
- 6 kA short-circuit breaking capacity.
- Combined residual-current and overcurrent protection.
- Compact modular format for electrical distribution systems.
- Part of the ABB DS300 RCBO product group.
Reliable Combined Protection for Final Circuits
An RCBO combines overcurrent and residual-current protection in a single protective device. The ABB DS301CT B20 A30 protects its connected circuit against overload and short-circuit currents while also detecting residual current to earth, allowing both protection functions to be provided by one device.
The 30 mA Type A residual-current function responds to sinusoidal alternating and pulsating DC residual currents, while the B characteristic is suited to circuits with comparatively low starting and inrush currents. Together with its 6 kA breaking capacity, these characteristics make the DS301CTB20A30 suitable for appropriately specified single-phase final circuits.
Typical Applications
- Residential electrical distribution systems.
- Commercial building distribution systems.
- Single-phase final circuits requiring 20 A overcurrent protection.
- Circuits with relatively low starting and inrush-current characteristics.
- Circuits supplying electrical and electronic equipment where Type A protection is appropriate.
- Final circuits requiring 30 mA Type A residual-current protection.
Technical Specifications
| Series | DS301CT |
|---|---|
| Product group | DS300 RCBO |
| Model / type code | DS301CT B20 A30 |
| SKU | DS301CTB20A30 |
| ABB order code | 2CSR255164R1205 |
| Product type | Residual current circuit breaker with overcurrent protection (RCBO) |
| Number of poles | 1P+N |
| Rated current | 20 A |
| Residual-current type | Type A |
| Rated residual operating current (IΔn) | 30 mA |
| Tripping characteristic | B |
| Short-circuit breaking capacity | 6 kA |
Frequently Asked Questions
What is the ABB DS301CTB20A30 used for?
The ABB DS301CTB20A30 provides combined overload, short-circuit and residual-current protection for suitable single-phase final circuits.
What is the current rating and trip curve of the DS301CT B20 A30?
The DS301CT B20 A30 has a rated current of 20 A and a Type B tripping characteristic.
What residual-current sensitivity does the DS301CTB20A30 provide?
This RCBO has a rated residual operating current of 30 mA.
What residual-current type is the ABB DS301CTB20A30?
It is a Type A RCBO, designed to respond to sinusoidal alternating residual currents and pulsating DC residual currents.
What is the breaking capacity of the DS301CT B20 A30?
The ABB DS301CT B20 A30 has a 6 kA short-circuit breaking capacity.
Trusted ABB Protection for Electrical Distribution
ABB DS300-series RCBOs combine residual-current and overcurrent protection in compact modular devices, supporting dependable protection of individual circuits in low-voltage electrical distribution systems.
