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2CCS573001R0085 ABB S403M-B8 Miniature Circuit Breaker 8 A 3P Type B 10 kA
ABB S403M-B8 is an 8 A 3-pole Type B miniature circuit breaker with 10 kA rated short-circuit capacity, designed for overload and short-circuit protection in SMISSLINE TP plug-in distribution systems.
£97.51
Why Choose the ABB S403M-B8 Miniature Circuit Breaker?
The ABB S403M-B8 is a high-performance 3-pole miniature circuit breaker (MCB) designed for reliable overload and short-circuit protection in three-phase electrical distribution systems. As part of the ABB S400M / SMISSLINE TP series, it combines an 8 A rated current, Type B tripping characteristic and 10 kA rated short-circuit capacity with ABB's convenient plug-in distribution technology.
Designed for circuits with relatively low starting or inrush currents, the S403M-B8 uses a Type B characteristic suited to appropriate resistive and general-purpose loads. Its three protected poles provide coordinated protection across three-phase circuits, making it suitable for commercial, industrial, control and automation applications.
With an 8 A rated current, 3-pole configuration and 230/400 V AC rated voltage, the S403M-B8 provides dependable circuit protection in compact distribution assemblies. Its 54 mm width and SMISSLINE TP plug-in construction support efficient installation and straightforward integration into compatible ABB distribution systems.
Key Advantages
- Reliable 3-pole miniature circuit breaker for overload and short-circuit protection.
- 8 A rated current for low-current three-phase circuits.
- Type B tripping characteristic for circuits with relatively low inrush currents.
- 10 kA rated short-circuit capacity according to IEC/EN 60898-1.
- Three protected poles for coordinated three-phase circuit protection.
- Compact 54 mm three-module construction.
- Plug-in installation designed for the ABB SMISSLINE TP system.
Key Features
- ABB S400M / SMISSLINE TP series.
- 8 A rated current.
- 3 protected poles.
- Type B tripping characteristic.
- 230/400 V AC rated voltage.
- 240–415 V AC rated operational voltage.
- 10 kA rated short-circuit capacity.
- 4 kV rated impulse withstand voltage.
- IP20 degree of protection.
- SMISSLINE TP plug-in mounting for modular distribution systems.
Reliable Three-Phase Circuit Protection
Miniature circuit breakers such as the ABB S403M-B8 protect electrical conductors and connected equipment by automatically interrupting current when overload or short-circuit conditions occur. The Type B tripping characteristic provides sensitive magnetic response and is particularly suitable for circuits where high starting currents are not normally expected.
The S403M-B8 combines this circuit protection with ABB's SMISSLINE TP plug-in architecture. Its three-pole construction, 8 A rating and 10 kA short-circuit capacity make it a practical solution for low-current three-phase circuits requiring dependable protection, modular installation and straightforward system integration.
Typical Applications
- Three-phase industrial control circuits.
- Automation and machine control systems.
- Commercial electrical distribution.
- Industrial electrical distribution boards.
- Low-current three-phase equipment circuits.
- Resistive and general-purpose loads with low inrush currents.
- ABB SMISSLINE TP modular distribution assemblies.
Technical Specifications
| Series | S400M / SMISSLINE TP |
|---|---|
| ABB order code | 2CCS573001R0085 |
| EAN | 7612270108435 |
| Product type | Miniature circuit breaker (MCB) |
| Rated current | 8 A |
| Number of poles | 3 |
| Number of protected poles | 3 |
| Tripping characteristic | Type B |
| Rated voltage | 230/400 V AC |
| Rated operational voltage | 240–415 V AC |
| Rated insulation voltage | 440 V |
| Rated short-circuit capacity (Icn) | 10 kA |
| Rated impulse withstand voltage | 4 kV |
| Frequency | 50–60 Hz |
| Energy limiting class | 3 |
| Protection rating | IP20 |
| Operating temperature | -25 to +60 °C |
| Electrical endurance | 10,000 cycles |
| Conductor connection range | 0.75–35 mm² |
| Mounting type | SMISSLINE TP plug-in system |
| Width | 54 mm |
| Height | 91 mm |
| Depth | 75 mm |
| Width in modules | 3 |
| Weight | approx. 322 g |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2 |
Frequently Asked Questions
What is the ABB S403M-B8 used for?
The S403M-B8 is a 3-pole miniature circuit breaker designed to protect compatible three-phase electrical circuits against overloads and short circuits.
What is the current rating of the S403M-B8?
The ABB S403M-B8 has a rated current of 8 A.
What tripping characteristic does the S403M-B8 use?
The S403M-B8 uses a Type B tripping characteristic, making it suitable for appropriate circuits with relatively low starting or inrush currents.
What is the breaking capacity of the ABB S403M-B8?
The S403M-B8 has a rated short-circuit capacity of 10 kA according to IEC/EN 60898-1.
How is the ABB S403M-B8 installed?
The breaker is designed for plug-in installation within the ABB SMISSLINE TP system, enabling efficient integration into compatible modular electrical distribution assemblies.
Trusted ABB Three-Phase Circuit Protection
ABB S400M miniature circuit breakers provide dependable overload and short-circuit protection for commercial and industrial applications while combining proven circuit protection technology with the modular advantages of the SMISSLINE TP plug-in distribution system.
