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2CCS571001R0085 ABB S401M-B8 MCB 1P Type B 8 A 10 kA
ABB S401M-B8 is a single-pole 8 A Type B miniature circuit breaker with 10 kA rated short-circuit capacity for the SMISSLINE TP plug-in distribution system.
£22.55
Why Choose the ABB S401M-B8 Miniature Circuit Breaker?
The ABB S401M-B8 is a compact single-pole miniature circuit breaker (MCB) designed for dependable overcurrent protection within the ABB SMISSLINE TP plug-in distribution system. With an 8 A rated current, Type B tripping characteristic and 10 kA rated short-circuit capacity, it provides reliable protection against overload and short-circuit conditions.
As part of the ABB S400M series, the S401M-B8 combines proven thermal-magnetic circuit protection with the installation flexibility of ABB's SMISSLINE TP architecture. Its plug-in construction supports efficient assembly, replacement and expansion of compatible distribution systems while maintaining a compact modular footprint.
The S401M-B8 has a 230 V AC rated operational voltage according to IEC/EN 60898-1 and occupies only one module. Its Type B characteristic is particularly suitable for circuits with relatively low inrush currents, including resistive loads, lighting, control circuits and general low-current distribution applications.
Key Advantages
- 8 A rated current for dependable low-current branch-circuit protection.
- Type B tripping characteristic suited to circuits with relatively 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 configuration.
- SMISSLINE TP plug-in construction supports efficient installation, replacement and system expansion.
Key Features
- ABB S400M-B SMISSLINE TP series.
- 8 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-Inrush Circuits
Miniature circuit breakers protect electrical conductors and connected equipment by automatically disconnecting a circuit when excessive current results from an overload or short circuit. The ABB S401M-B8 combines thermal overload protection with magnetic short-circuit protection to provide dependable circuit isolation under fault conditions.
Its Type B characteristic is well suited to circuits with comparatively low starting currents, while the 10 kA short-circuit capacity provides robust fault protection. Combined with ABB's SMISSLINE TP plug-in technology, the S401M-B8 offers compact and service-friendly protection for commercial and industrial electrical distribution systems.
Typical Applications
- Lighting and resistive-load circuits.
- Industrial control and auxiliary circuits.
- Building-services distribution boards.
- Control-panel power distribution.
- Signalling and monitoring circuits.
- ABB SMISSLINE TP plug-in distribution assemblies.
Technical Specifications
| Series | S400M-B / SMISSLINE TP |
|---|---|
| Order code | 2CCS571001R0085 |
| EAN / GTIN | 7612270108411 |
| Product type | Miniature circuit breaker (MCB) |
| Number of poles | 1 |
| Number of protected poles | 1 |
| Rated current | 8 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 |
| Rated insulation voltage | 440 V |
| Rated impulse withstand voltage | 4 kV |
| Protection rating | IP20 |
| Module width | 1 module |
| Width | 18 mm |
| Height | 91 mm |
| Depth | 75 mm |
| Weight | approx. 110 g |
| Standard | IEC/EN 60898-1 |
| Mounting system | ABB SMISSLINE TP plug-in system |
Frequently Asked Questions
What is the ABB S401M-B8 used for?
The S401M-B8 is a single-pole miniature circuit breaker designed to protect electrical circuits against overload and short-circuit conditions.
What is the rated current of the S401M-B8?
The ABB S401M-B8 has a rated current of 8 A.
What tripping characteristic does the S401M-B8 use?
It uses a Type B tripping characteristic, making it suitable for circuits with relatively low inrush currents such as resistive, lighting and control loads.
What is the short-circuit capacity of the ABB S401M-B8?
The S401M-B8 has a rated short-circuit capacity of 10 kA according to IEC/EN 60898-1.
What mounting system does the S401M-B8 use?
The breaker is designed for the ABB SMISSLINE TP plug-in system, supporting efficient installation and replacement within compatible modular distribution assemblies.
Trusted ABB Circuit Protection
ABB S400M miniature circuit breakers combine dependable thermal-magnetic overcurrent protection, high short-circuit performance and the flexible SMISSLINE TP plug-in architecture for commercial and industrial electrical distribution systems.
