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2CCS571001R0045 ABB S401M-B4 MCB 1P Type B 4 A 10 kA
ABB S401M-B4 is a single-pole 4 A Type B miniature circuit breaker with 10 kA rated short-circuit capacity for the SMISSLINE TP plug-in distribution system.
£24.67
Why Choose the ABB S401M-B4 Miniature Circuit Breaker?
The ABB S401M-B4 is a single-pole miniature circuit breaker (MCB) designed for dependable overcurrent protection within the ABB SMISSLINE TP plug-in distribution system. With a 4 A rated current, Type B tripping characteristic and 10 kA rated short-circuit capacity, it provides reliable protection against overload and short-circuit conditions in low-current electrical circuits.
As part of the ABB S400M series, the S401M-B4 combines proven thermal-magnetic circuit protection with the installation flexibility of ABB's SMISSLINE TP architecture. The plug-in design allows compatible protective devices to be installed efficiently on the SMISSLINE socket base, supporting straightforward assembly, servicing and future modification of distribution systems.
The S401M-B4 has a 230 V AC rated operational voltage according to IEC/EN 60898-1 and occupies only one module. Its Type B characteristic provides rapid magnetic tripping for circuits with relatively low inrush currents, making the breaker well suited to control, auxiliary, lighting and other low-current distribution applications.
Key Advantages
- 4 A rated current for reliable protection of low-current circuits.
- Type B tripping characteristic suited to loads with low inrush currents.
- 10 kA rated short-circuit capacity according to IEC/EN 60898-1.
- Provides combined overload and short-circuit protection.
- Compact single-pole, one-module design.
- SMISSLINE TP plug-in construction supports efficient installation, replacement and system expansion.
Key Features
- ABB S400M SMISSLINE TP series.
- 4 A rated current.
- Type B tripping characteristic.
- 1-pole configuration.
- 10 kA rated short-circuit capacity.
- 230 V AC rated operational voltage according to IEC/EN 60898-1.
- Thermal-magnetic overload and short-circuit protection.
- IP20 protection rating.
- Compact 18 mm width.
- SMISSLINE TP plug-in mounting for modular distribution assemblies.
Reliable Overcurrent Protection for Low-Current Circuits
Miniature circuit breakers protect electrical conductors and connected equipment by automatically interrupting the circuit when excessive current results from an overload or short circuit. The ABB S401M-B4 combines thermal overload protection with magnetic short-circuit protection to provide dependable circuit isolation under fault conditions.
Its Type B characteristic is intended for circuits with comparatively low starting or inrush currents. Combined with a 10 kA short-circuit capacity and ABB's SMISSLINE TP plug-in technology, the S401M-B4 provides compact and service-friendly protection for commercial and industrial electrical distribution systems.
Typical Applications
- Industrial control and auxiliary circuits.
- Low-current lighting circuits.
- Building-services distribution boards.
- Control-panel power distribution.
- Signalling and monitoring circuits.
- ABB SMISSLINE TP plug-in distribution assemblies.
Technical Specifications
| Series | S400M / SMISSLINE TP |
|---|---|
| Order code | 2CCS571001R0045 |
| EAN / GTIN | 7612270101214 |
| Product type | Miniature circuit breaker (MCB) |
| Number of poles | 1 |
| Number of protected poles | 1 |
| Rated current | 4 A |
| Tripping characteristic | Type B |
| Rated operational voltage | 230 V AC according to IEC/EN 60898-1 |
| Frequency | 50–60 Hz |
| Rated short-circuit capacity Icn | 10 kA |
| Protection rating | IP20 |
| Connection capacity | 0.75–35 mm² |
| Module width | 1 module |
| Width | 18 mm |
| Height | 91 mm |
| Depth | 75 mm |
| Power loss | 1.9 W |
| Standard | IEC/EN 60898-1 |
| Mounting system | ABB SMISSLINE TP plug-in system |
Frequently Asked Questions
What is the ABB S401M-B4 used for?
The S401M-B4 is a single-pole miniature circuit breaker designed to protect low-current electrical circuits against overload and short-circuit conditions.
What is the rated current of the S401M-B4?
The ABB S401M-B4 has a rated current of 4 A.
What tripping characteristic does the S401M-B4 use?
It uses a Type B tripping characteristic, making it suitable for circuits with relatively low inrush currents.
What is the short-circuit capacity of the ABB S401M-B4?
The S401M-B4 has a rated short-circuit capacity of 10 kA according to IEC/EN 60898-1.
What mounting system does the S401M-B4 use?
The breaker is designed for the ABB SMISSLINE TP plug-in system, allowing efficient installation and replacement within compatible modular distribution assemblies.
Trusted ABB Circuit Protection
ABB S400M miniature circuit breakers combine dependable thermal-magnetic overcurrent protection with the flexible SMISSLINE TP plug-in architecture, supporting efficient installation and maintenance in commercial and industrial electrical distribution systems.
