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2CCS572001R0045 ABB S402M-B4 MCB 10kA 2P Type B 4A
ABB S402M-B4 is a 4 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.
£66.43
Why Choose the ABB S402M-B4 Miniature Circuit Breaker?
The ABB S402M-B4 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 4 A, a Type B tripping characteristic and a rated short-circuit breaking capacity of 10 kA. ABB specifies a rated voltage of 230/400 V AC and an operational voltage range of 240–415 V AC according to IEC 60898-1, making the device suitable for a broad range of appropriately designed AC distribution circuits.
The S402M-B4 provides simultaneous protection across two protected poles and uses ABB's SMISSLINE TP plug-in connection system. Its compact 2-module construction supports efficient installation, replacement, maintenance and future circuit modification within compatible ABB SMISSLINE distribution assemblies.
Key Advantages
- 4 A rated current with Type B tripping characteristic.
- 2-pole configuration with both poles protected.
- 10 kA rated short-circuit breaking capacity.
- 230/400 V AC rated voltage for professional AC distribution.
- Type B characteristic suited to circuits with relatively low starting and inrush currents.
- IP20 device protection rating.
- Plug-in construction for integration with the ABB SMISSLINE TP system.
Key Features
- ABB S400M-B SMISSLINE TP miniature circuit breaker.
- 4 A rated current.
- Type B characteristic.
- 2-pole, 2-protected-pole configuration.
- 230/400 V AC rated voltage.
- 10 kA Icn short-circuit breaking capacity.
- 440 V rated insulation voltage.
- 4 kV rated impulse withstand voltage.
- 0.75–35 mm² conductor connection capability.
- 2-module SMISSLINE plug-in format.
Reliable Type B Two-Pole Circuit Protection
The ABB S402M-B4 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 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-B4 provides a compact and maintainable 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 | 2CCS572001R0045 |
| EAN | 7612270101986 |
| Product type | Miniature circuit breaker (MCB) |
| Rated current | 4 A |
| Tripping characteristic | Type B |
| Number of poles | 2 |
| Number of protected poles | 2 |
| Rated voltage | 230/400 V AC |
| Rated operational voltage | 240–415 V AC according to IEC 60898-1 |
| 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 |
| Energy limiting class | 3 |
| Overvoltage category | III |
| Pollution degree | 3 |
| Protection rating | IP20 |
| Conductor connection range | 0.75–35 mm² |
| Electrical endurance | 10,000 cycles |
| Operating temperature | −25 to +55 °C |
| Number of modules | 2 |
| Mounting type | SMISSLINE plug-in |
| Dimensions (W × H × D) | 36 × 91 × 75 mm |
| Weight | approx. 235 g |
| ABB packaging unit | 5 pieces |
Frequently Asked Questions
What is the ABB S402M-B4 used for?
The S402M-B4 is a 4 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-B4?
The ABB S402M-B4 has a rated current of 4 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-B4?
The S402M-B4 has a rated short-circuit breaking capacity of 10 kA according to IEC/EN 60898-1.
How many poles does the ABB S402M-B4 protect?
The S402M-B4 is a 2-pole MCB with two protected poles, providing simultaneous 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.
