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.
2CCG000540R0001 ABB S403P-B50NP 50 A 3P+NP Type B 20 kA Miniature Circuit Breaker
ABB S403P-B50NP is a 50 A 3P+NP Type B miniature circuit breaker with a protected neutral pole and 20 kA ultimate short-circuit breaking capacity for the ABB SMISSLINE TP plug-in system.
£175.98
Why Choose the ABB S403P-B50NP Miniature Circuit Breaker?
The ABB S403P-B50NP is a high-performance three-phase plus protected neutral miniature circuit breaker (MCB) designed to protect electrical circuits against overload and short-circuit currents. As part of the ABB S400P series for the SMISSLINE TP plug-in system, it combines high breaking capacity with convenient plug-in installation for professional commercial and industrial power distribution.
Designed with a Type B tripping characteristic, the S403P-B50NP is suitable for circuits with relatively low inrush currents. Its 3P+NP configuration provides three phase poles together with a switched and protected neutral pole, making it suitable for four-pole AC distribution circuits requiring coordinated protection and disconnection.
With a rated current of 50 A, a rated operational voltage of 415 V AC and an ultimate short-circuit breaking capacity of 20 kA according to IEC/EN 60947-2, the S403P-B50NP provides robust protection for demanding electrical installations. ABB order code 2CCG000540R0001 identifies this specific 50 A Type B configuration for the SMISSLINE TP system.
Key Advantages
- High-performance 3P+NP miniature circuit breaker for four-pole AC circuit protection.
- 50 A rated current for commercial and industrial distribution circuits.
- Type B tripping characteristic suitable for loads with relatively low inrush currents.
- 20 kA ultimate short-circuit breaking capacity according to IEC/EN 60947-2.
- Includes a switched and protected neutral pole.
- Purpose-designed for the ABB SMISSLINE TP plug-in system.
Key Features
- ABB S400P miniature circuit breaker series.
- 3P+NP configuration with three phase poles and protected neutral.
- 50 A rated current.
- 415 V AC rated operational voltage.
- Type B tripping characteristic.
- 20 kA Icu breaking capacity.
- 50–60 Hz operating frequency.
- Plug-in connection for compatible ABB SMISSLINE TP socket systems.
Reliable Circuit Protection for SMISSLINE TP Systems
Miniature circuit breakers such as the ABB S403P-B50NP protect electrical cables and circuits against excessive currents caused by overloads and short circuits. When current exceeds permitted operating conditions, the breaker automatically interrupts the circuit, helping protect conductors, connected equipment and electrical distribution infrastructure.
The ABB S400P range is engineered specifically for the SMISSLINE TP plug-in system. Its plug-in architecture enables compatible protective devices to connect directly to the socket system, supporting flexible power distribution, efficient servicing and straightforward circuit modifications in professional electrical installations.
Typical Applications
- Three-phase plus neutral electrical distribution circuits.
- Commercial and industrial distribution panels.
- ABB SMISSLINE TP distribution assemblies.
- Machinery and automation power circuits.
- Building services and infrastructure installations.
- Electrical systems requiring high short-circuit protection performance.
Technical Specifications
| Series | S400P |
|---|---|
| Product group | SMISSLINE Plug-in System |
| ABB order code | 2CCG000540R0001 |
| EAN / GTIN | 7612271509095 |
| Product type | Miniature circuit breaker (MCB) |
| Pole configuration | 3P+NP |
| Total number of poles | 4 |
| Protected poles | 4 |
| Neutral | Switched and protected |
| Rated current | 50 A |
| Rated operational voltage | 415 V AC |
| Tripping characteristic | Type B |
| Ultimate short-circuit breaking capacity (Icu) | 20 kA |
| Frequency | 50–60 Hz |
| Rated insulation voltage (Ui) | 440 V |
| Rated impulse withstand voltage (Uimp) | 4 kV |
| Energy limiting class | 3 |
| Overvoltage category | III |
| Pollution degree | 3 |
| Operating temperature | -25 to +60 °C |
| System | ABB SMISSLINE TP |
| Number of modules | 4 |
| Installation depth | 91 mm |
| Protection rating | IP20 |
| Solid conductor connection | 0.75–35 mm² |
| Stranded conductor connection | 0.75–25 mm² |
| Weight | approx. 0.460 kg |
Frequently Asked Questions
What is the ABB S403P-B50NP used for?
The S403P-B50NP is a miniature circuit breaker designed to protect compatible three-phase plus neutral circuits against overload and short-circuit currents in ABB SMISSLINE TP electrical distribution systems.
What is the rated current of the S403P-B50NP?
The ABB S403P-B50NP has a rated current of 50 A.
What breaking capacity does the S403P-B50NP provide?
The S403P-B50NP has an ultimate short-circuit breaking capacity (Icu) of 20 kA according to IEC/EN 60947-2.
What does 3P+NP mean on the S403P-B50NP?
The 3P+NP configuration provides three phase poles together with a switched and protected neutral pole, giving four-pole circuit protection and disconnection.
Which distribution system is the S403P-B50NP designed for?
The breaker is designed for the ABB SMISSLINE TP plug-in system, allowing it to integrate directly with compatible SMISSLINE socket-based distribution assemblies.
Trusted ABB Circuit Protection
ABB S400P miniature circuit breakers combine dependable overload and short-circuit protection with the flexible plug-in architecture of the SMISSLINE TP system, supporting efficient electrical distribution in commercial and industrial installations.
