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2CDS211103R0205 ABB SH201-B20NA 20 A Type B 1P+N 6 kA Miniature Circuit Breaker
ABB SH201-B20NA is a 20 A Type B 1P+N miniature circuit breaker with 6 kA breaking capacity for overload and short-circuit protection with neutral switching in electrical circuits.
£55.73
Why Choose the ABB SH201-B20NA Miniature Circuit Breaker?
The ABB SH201-B20NA is a compact 1P+N miniature circuit breaker (MCB) designed to protect electrical circuits against overloads and short circuits while also switching the neutral conductor. Part of the ABB SH200 series, it provides thermal-magnetic circuit protection in a modular DIN-rail format for residential, commercial and electrical distribution applications.
Featuring a 20 A rated current, Type B tripping characteristic and 6 kA rated short-circuit breaking capacity, the SH201-B20NA is suited to appropriately designed circuits with relatively low inrush currents. Its Type B characteristic makes it suitable for resistive, lighting, control and other general-purpose loads where high starting currents are not expected.
The SH201-B20NA combines a protected phase pole and switched neutral in a 1P+N configuration. This provides phase overcurrent protection together with neutral switching, making the breaker a practical solution for final circuits requiring simultaneous phase and neutral disconnection within a compact modular installation.
Key Advantages
- Compact 1P+N miniature circuit breaker with phase protection and neutral switching.
- 20 A rated current for dependable final-circuit protection.
- Type B tripping characteristic suited to circuits with relatively low inrush currents.
- 6 kA rated short-circuit breaking capacity.
- Provides combined overload and short-circuit protection.
- Switched neutral supports simultaneous phase and neutral disconnection.
- DIN-rail construction supports straightforward installation in modular distribution equipment.
Key Features
- ABB SH200 series.
- 1P+N configuration with one protected phase pole and switched neutral.
- 20 A rated current.
- Type B tripping characteristic.
- 6 kA rated short-circuit breaking capacity.
- Thermal protection against sustained overload currents.
- Magnetic protection against short-circuit fault currents.
- Suitable for appropriately designed circuits with relatively low inrush currents.
- Compact modular construction for DIN-rail installation.
Reliable Protection for Final Distribution Circuits
The ABB SH201-B20NA uses thermal-magnetic protection to respond to both overload and short-circuit conditions. Its thermal mechanism responds to sustained overcurrents, while the magnetic mechanism provides rapid operation when sufficiently high short-circuit fault currents occur.
The Type B characteristic is intended for circuits where comparatively low inrush currents are expected. Combined with a 20 A rating and 1P+N arrangement, the SH201-B20NA provides a compact protection solution for appropriately designed resistive, lighting and general-purpose final circuits requiring neutral switching.
Typical Applications
- Residential final distribution circuits.
- Commercial final circuits.
- Resistive electrical loads.
- Lighting circuits with relatively low inrush currents.
- General-purpose circuits where a 20 A Type B breaker is appropriate.
- DIN-rail distribution boards and electrical panels.
Technical Specifications
| Series | SH200 |
|---|---|
| ABB order code | 2CDS211103R0205 |
| Product type | Miniature circuit breaker (MCB) |
| Number of poles | 1P+N |
| Protected poles | 1 |
| Neutral switching | Yes |
| Rated current | 20 A |
| Tripping characteristic | Type B |
| Rated frequency | 50/60 Hz |
| Rated short-circuit capacity (Icn) | 6 kA |
| Rated insulation voltage (Ui) | 500 V |
| Rated impulse withstand voltage (Uimp) | 4 kV |
| Energy limiting class | 3 |
| Overvoltage category | III |
| Pollution degree | 2 |
| Operating temperature | -25 to +55 °C |
| Mounting type | DIN-rail mounting |
| Standard | IEC/EN 60898-1 |
Frequently Asked Questions
What is the ABB SH201-B20NA used for?
The ABB SH201-B20NA is used to protect 20 A electrical circuits against overloads and short circuits while also switching the neutral conductor.
What is the current rating of the SH201-B20NA?
The SH201-B20NA has a rated current of 20 A.
What does the Type B characteristic mean?
The Type B tripping characteristic is suited to appropriately designed circuits with relatively low inrush currents, including many resistive, lighting and general-purpose loads.
What is the breaking capacity of the ABB SH201-B20NA?
The SH201-B20NA has a rated short-circuit breaking capacity of 6 kA.
What does the 1P+N configuration provide?
The 1P+N configuration provides overcurrent protection for the phase conductor together with switching of the neutral conductor, supporting simultaneous phase and neutral disconnection.
Trusted Circuit Protection from ABB
ABB SH200 miniature circuit breakers provide dependable thermal-magnetic protection in a compact modular format, supporting safe and space-efficient circuit protection across residential, commercial and electrical distribution applications.
