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2CSR772440R1205 ABB DS202CRMB20APR30 DS202CR M B20 APR30 RCBO 2P 30 mA
ABB DS202CRMB20APR30 is a compact 2-pole Type A APR high-immunity RCBO with a 20 A rated current, B tripping characteristic, 30 mA residual-current sensitivity, 230 V AC rating and 10 kA short-circuit capacity.
£194.46
Why Choose the ABB DS202CRMB20APR30 RCBO?
The ABB DS202CRMB20APR30 is a compact 2-pole residual current circuit breaker with overcurrent protection (RCBO) designed to protect single-phase end-user circuits against overloads, short circuits and residual-current faults. Part of the ABB DS202CR M APR series, it combines overcurrent and residual-current protection in a two-module DIN-rail device for residential, commercial and industrial electrical installations.
This RCBO provides a 20 A rated current, B tripping characteristic and ABB APR high-immunity Type A residual-current protection. It detects sinusoidal alternating and direct pulsating residual currents while providing increased resistance to unwanted tripping, helping achieve a practical balance between electrical safety and continuity of service.
With a rated residual operating current of 30 mA, 230 V AC rated operational voltage and 10 kA rated short-circuit capacity, the DS202CRMB20APR30 provides robust combined protection in a compact format. Its APR characteristic also offers 3 kA surge-current resistance, making it particularly useful where transient disturbances could otherwise cause nuisance operation.
Key Advantages
- Combined RCBO protection against overload, short circuit and residual-current faults.
- 20 A rated current for suitable final and distribution circuits.
- B tripping characteristic suitable for circuits with relatively low inrush currents.
- APR high-immunity Type A protection for sinusoidal AC and pulsating DC residual currents.
- 30 mA rated residual operating current for additional protection against direct contact.
- 3 kA surge-current resistance helps reduce unwanted tripping caused by transient disturbances.
- 10 kA rated short-circuit capacity for robust fault protection.
- Compact 2-pole, two-module construction helps conserve DIN-rail space.
Key Features
- ABB DS202CR M APR series RCBO.
- 20 A rated current.
- B tripping characteristic.
- Type A APR high-immunity residual-current characteristic.
- 30 mA residual-current sensitivity.
- 2 poles with 2 protected poles.
- 230 V AC rated operational voltage.
- 50 Hz rated frequency.
- 10 kA rated short-circuit capacity.
- 7.5 kA rated service short-circuit breaking capacity.
- 3 kA maximum surge current.
- 4 kV rated impulse withstand voltage.
- Compact two-module DIN-rail format.
- Blue-flag fault indication for easier identification of residual-current operation.
High-Immunity Residual-Current Protection
RCBOs combine the functions of a miniature circuit breaker and a residual-current device in one protective unit. The ABB DS202CRMB20APR30 protects single-phase end-user circuits against excessive current caused by overloads and short circuits while also detecting sinusoidal alternating and direct pulsating earth-fault currents.
ABB's APR high-immunity characteristic is designed to provide increased resistance to unwanted tripping while maintaining effective residual-current protection. With a maximum surge-current resistance of 3 kA, the DS202CRMB20APR30 is particularly useful where transient disturbances may occur, supporting improved continuity of service alongside sensitive 30 mA protection.
Typical Applications
- Residential electrical distribution systems.
- Commercial buildings and distribution boards.
- Industrial electrical installations.
- Single-phase end-user circuits.
- Circuits supplying electrical and electronic equipment.
- Applications susceptible to transient disturbances or nuisance tripping.
- Installations requiring combined 20 A overcurrent and 30 mA residual-current protection.
Technical Specifications
| Series | DS202CR M APR |
|---|---|
| Type code | DS202CR M B20 APR30 |
| ABB order code | 2CSR772440R1205 |
| EAN | 4022903035282 |
| Product group | DS200 / DSH200 RCBO |
| Product type | Residual current circuit breaker with overcurrent protection (RCBO) |
| Number of poles | 2 |
| Number of protected poles | 2 |
| Rated current | 20 A |
| Tripping characteristic | B |
| Residual-current type | Type A APR high immunity |
| Rated residual operating current | 30 mA |
| Rated operational voltage | 230 V AC |
| Rated frequency | 50 Hz |
| Rated insulation voltage (Ui) | 440 V |
| Rated impulse withstand voltage (Uimp) | 4 kV |
| Rated short-circuit capacity | 10 kA |
| Rated ultimate short-circuit breaking capacity (Icu) | 10 kA |
| Rated service short-circuit breaking capacity (Ics) | 7.5 kA |
| Maximum surge current | 3 kA |
| Energy limiting class | 3 |
| Electrical endurance | 10,000 operations |
| Mechanical endurance | 20,000 operations |
| Protection rating | IP20 |
| Overvoltage category | III |
| Pollution degree | 3 |
| Operating temperature | -25 to +55 °C |
| Dimensions (H × W × D) | 86 × 36 × 72 mm |
| Tightening torque | 4 N·m |
| Solid conductor connection | 1–35 mm² |
| Flexible conductor connection | 1–25 mm² |
| Wire stripping length | 11 mm |
| Mounting type | DIN rail |
| Weight | approx. 0.245 kg |
| Applications | Residential, commercial and industrial |
| Standards | IEC/EN 61009-1; IEC/EN 61009-2-1 |
Frequently Asked Questions
What is the ABB DS202CRMB20APR30 used for?
The DS202CRMB20APR30 is a 2-pole RCBO for residential, commercial and industrial applications, protecting single-phase circuits against overloads, short circuits and residual earth-fault currents.
What is the rated current of the ABB DS202CRMB20APR30?
The RCBO has a rated current of 20 A and uses a B tripping characteristic.
What residual-current sensitivity does the DS202CRMB20APR30 provide?
The DS202CRMB20APR30 has a rated residual operating current of 30 mA and provides Type A APR residual-current protection.
What does APR mean on the ABB DS202CRMB20APR30?
APR identifies ABB's high-immunity residual-current characteristic. It provides increased resistance to unwanted tripping caused by transient disturbances while detecting sinusoidal AC and direct pulsating residual currents.
What is the short-circuit capacity of the DS202CRMB20APR30?
The ABB DS202CRMB20APR30 has a rated short-circuit capacity of 10 kA, with a rated service short-circuit breaking capacity of 7.5 kA.
Trusted High-Immunity Circuit Protection from ABB
ABB DS202CR M APR RCBOs combine overcurrent and residual-current protection with enhanced resistance to unwanted tripping, providing dependable protection and improved continuity of service for residential, commercial and industrial electrical installations.
