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.
2CCG000442R0001 ABB S401P-B4NP MCB 40 kA 1P+N B 4 A
ABB S401P-B4NP is a 4 A 1P+N B characteristic miniature circuit breaker with concurrently switching neutral and 40 kA Icu breaking capacity for the SMISSLINE TP plug-in system.
£65.93
Why Choose the ABB S401P-B4NP Miniature Circuit Breaker?
The ABB S401P-B4NP is a high-performance 1P+N miniature circuit breaker (MCB) with protected neutral designed to protect electrical circuits against overload and short-circuit conditions. Part of the ABB S400P range for the SMISSLINE TP plug-in system, it combines a 4 A rated current, B tripping characteristic and high short-circuit breaking capacity for professional industrial and commercial electrical distribution applications.
Designed specifically for ABB's SMISSLINE TP platform, the S401P-B4NP provides a compact plug-in protection solution with a concurrently switching neutral conductor. Direct connection to the SMISSLINE plug-in socket system supports efficient installation, replacement and expansion while retaining the modular flexibility of the distribution platform.
With a rated current of 4 A and an ultimate short-circuit breaking capacity (Icu) of 40 kA, the S401P-B4NP provides robust protection for low-current circuits. The device occupies two modules, weighs approximately 0.230 kg and combines phase and neutral functionality in a compact modular format.
Key Advantages
- High-performance 4 A miniature circuit breaker for overload and short-circuit protection.
- 40 kA Icu breaking capacity for installations with demanding prospective fault-current requirements.
- B tripping characteristic for appropriate general-purpose and low-inrush circuits.
- 1P+N configuration with concurrently switching neutral conductor.
- Designed specifically for the ABB SMISSLINE TP plug-in system.
- Compact two-module construction supports efficient installation and system expansion.
Key Features
- ABB S400P miniature circuit breaker series.
- 4 A rated current.
- 1P+N configuration.
- B tripping characteristic.
- 40 kA ultimate short-circuit breaking capacity (Icu).
- 50–60 Hz operating frequency.
- IP20 protection at the connection terminal.
- Compatible with conductor cross-sections up to 35 mm² for solid conductors.
- Direct plug-in integration with the SMISSLINE TP system.
Reliable Circuit Protection for SMISSLINE TP Systems
Miniature circuit breakers such as the ABB S401P-B4NP protect cables and connected electrical circuits by automatically interrupting current when overload or short-circuit conditions occur. Its B tripping characteristic makes the device suitable for appropriate circuits where comparatively low transient inrush currents are expected.
The S401P-B4NP combines dependable overcurrent protection with ABB's SMISSLINE TP plug-in architecture. This provides a compact and flexible solution for professional distribution assemblies where straightforward installation, efficient servicing and future system expansion are important.
Typical Applications
- ABB SMISSLINE TP electrical distribution systems.
- Industrial control and automation panels.
- Commercial and industrial distribution boards.
- Low-current control and auxiliary circuits.
- Circuits requiring phase and neutral switching.
- General-purpose circuits with relatively low starting or inrush currents.
Technical Specifications
| Series | S400P / SMISSLINE TP |
|---|---|
| ABB order code | 2CCG000442R0001 |
| Product type | Miniature circuit breaker (MCB) |
| Rated current | 4 A |
| Configuration | 1P+N |
| Total poles | 2 |
| Neutral conductor | Concurrently switching |
| Tripping characteristic | B |
| Ultimate short-circuit breaking capacity (Icu) | 40 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 |
| Protection rating | IP20 |
| Operating temperature | -25 to +60 °C |
| Installation depth | 91 mm |
| Number of modules | 2 |
| Power loss | 2.6 W |
| Solid conductor connection | 0.75–35 mm² |
| Stranded conductor connection | 0.75–25 mm² |
| System | SMISSLINE TP plug-in system |
| Weight | 0.230 kg |
| Pack quantity | 5 pieces |
| EAN / GTIN | 7612271508579 |
Frequently Asked Questions
What is the ABB S401P-B4NP used for?
The ABB S401P-B4NP is a 1P+N miniature circuit breaker designed to protect electrical circuits against overload and short-circuit conditions within SMISSLINE TP distribution systems.
What is the rated current of the S401P-B4NP?
The S401P-B4NP has a rated current of 4 A.
What breaking capacity does the S401P-B4NP provide?
The S401P-B4NP provides an ultimate short-circuit breaking capacity (Icu) of 40 kA.
What does the B characteristic mean on the S401P-B4NP?
The B tripping characteristic is intended for appropriate circuits with comparatively low transient starting or inrush currents while providing dependable overload and short-circuit protection.
Which ABB system is the S401P-B4NP designed for?
The S401P-B4NP is designed for the ABB SMISSLINE TP plug-in system and occupies two modules within a compatible distribution assembly.
Trusted ABB Circuit Protection
ABB S400P miniature circuit breakers combine dependable overload and short-circuit protection with the modular flexibility of the SMISSLINE TP plug-in system, supporting efficient installation and reliable operation in professional electrical distribution applications.
