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2CCS572001R0085 ABB S402M-B8 MCB 10kA 2P Type B 8A
ABB S402M-B8 is an 8 A 2-pole Type B miniature circuit breaker with 10 kA breaking capacity and SMISSLINE TP plug-in mounting for reliable overload and short-circuit protection.
£59.83
Why Choose the ABB S402M-B8 Miniature Circuit Breaker?
The ABB S402M-B8 is a pluggable 2-pole miniature circuit breaker (MCB) designed to protect electrical circuits against overload and short-circuit currents. Part of the ABB S400M SMISSLINE TP series, it combines dependable circuit protection with ABB's modular plug-in distribution architecture for professional low-voltage installations.
This circuit breaker has a rated current of 8 A, a Type B tripping characteristic and a rated short-circuit breaking capacity of 10 kA according to IEC/EN 60898-1. Its Type B characteristic is suited to appropriately designed circuits with relatively low starting and inrush currents, including many lighting, resistive, control and auxiliary loads.
The S402M-B8 provides protection across two poles and is designed specifically for ABB's SMISSLINE TP plug-in system. Its compact 2-module construction supports efficient installation, replacement, maintenance and future circuit modification within compatible ABB distribution assemblies.
Key Advantages
- 8 A rated current with Type B tripping characteristic.
- 2-pole configuration with both poles protected.
- 10 kA rated short-circuit breaking capacity according to IEC/EN 60898-1.
- 230/400 V AC system suitability.
- Type B characteristic suited to circuits with relatively low starting and inrush currents.
- IP20 degree of protection.
- Plug-in construction for integration with the ABB SMISSLINE TP system.
Key Features
- ABB S400M-B SMISSLINE TP miniature circuit breaker.
- 8 A rated current.
- Type B characteristic.
- 2-pole, 2-protected-pole configuration.
- 10 kA Icn according to IEC/EN 60898-1.
- 440 V rated insulation voltage.
- 4 kV rated impulse withstand voltage.
- 0.75–35 mm² solid-conductor connection range.
- 10,000-cycle electrical endurance.
- 2-module SMISSLINE plug-in format.
Reliable Type B Two-Pole Circuit Protection
The ABB S402M-B8 protects electrical conductors and connected equipment by automatically interrupting excessive currents caused by overload or short-circuit conditions. Its 2-pole configuration provides protection across both poles, while the 10 kA rated breaking capacity supports dependable fault interruption in correctly designed low-voltage distribution systems.
The Type B characteristic is suited to circuits where relatively low short-duration inrush currents are expected, including many resistive, lighting, control and auxiliary loads. Combined with ABB's SMISSLINE TP plug-in architecture, the S402M-B8 provides a compact and maintainable circuit-protection solution for commercial, industrial and building-services distribution.
Typical Applications
- Commercial electrical distribution systems.
- Industrial low-voltage distribution boards.
- Building-services electrical installations.
- Control and auxiliary power circuits.
- Lighting and resistive-load circuits where Type B protection is appropriate.
- Two-pole AC branch and final circuits.
- ABB SMISSLINE TP plug-in distribution assemblies.
Technical Specifications
| Product group | SMISSLINE Plug-in System |
|---|---|
| Series | S400M-B / SMISSLINE TP |
| ABB order code | 2CCS572001R0085 |
| EAN | 7612270108428 |
| Product type | Miniature circuit breaker (MCB) |
| Rated current | 8 A |
| Tripping characteristic | Type B |
| Number of poles | 2 |
| Number of protected poles | 2 |
| Rated voltage | 230/400 V AC |
| Frequency | 50–60 Hz |
| Rated insulation voltage (Ui) | 440 V |
| Rated impulse withstand voltage (Uimp) | 4 kV |
| Rated short-circuit breaking capacity (Icn) | 10 kA |
| Standard | IEC/EN 60898-1 |
| Current limiting class | 3 |
| Overvoltage category | III |
| Pollution degree | 3 |
| Protection rating | IP20 |
| Solid conductor connection range | 0.75–35 mm² |
| Multi-wired conductor connection range | 0.75–25 mm² |
| Electrical endurance | 10,000 cycles |
| Operating temperature | −25 to +60 °C |
| Number of modules | 2 |
| Mounting type | SMISSLINE plug-in |
| Dimensions (W × H × D) | 36 × 91 × 75 mm |
| Weight | approx. 221 g |
| ABB packaging unit | 5 pieces |
Frequently Asked Questions
What is the ABB S402M-B8 used for?
The S402M-B8 is an 8 A 2-pole miniature circuit breaker designed to protect electrical circuits against overload and short-circuit currents in compatible ABB SMISSLINE TP plug-in distribution systems.
What is the rated current of the S402M-B8?
The ABB S402M-B8 has a rated current of 8 A.
What does the Type B characteristic mean?
The Type B tripping characteristic is suited to appropriately designed circuits with relatively low starting and inrush currents, including many resistive, lighting, control and auxiliary loads.
What is the breaking capacity of the S402M-B8?
The S402M-B8 has a rated short-circuit breaking capacity of 10 kA according to IEC/EN 60898-1.
How many poles does the ABB S402M-B8 protect?
The S402M-B8 is a 2-pole MCB with two protected poles, providing coordinated circuit protection across both poles.
Trusted ABB Protection for Professional Distribution Systems
ABB SMISSLINE TP S400M miniature circuit breakers combine dependable overload and short-circuit protection with compact multi-pole configurations and flexible plug-in architecture for professional low-voltage power distribution.
