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2CCS572001R0201 ABB S402M-D20 MCB 10kA 2P Type D 20A
ABB S402M-D20 is a 20 A Type D 2-pole miniature circuit breaker with 10 kA breaking capacity, designed for overload and short-circuit protection in SMISSLINE plug-in electrical distribution systems.
£58.52
Why Choose the ABB S402M-D20 Miniature Circuit Breaker?
The ABB S402M-D20 is a high-performance 2-pole miniature circuit breaker (MCB) designed to provide reliable overload and short-circuit protection in electrical distribution systems. Part of the ABB S400M range for the SMISSLINE TP plug-in system, it combines a 20 A rated current, Type D tripping characteristic and 10 kA rated short-circuit breaking capacity.
Designed for ABB's SMISSLINE plug-in distribution platform, the S402M-D20 enables efficient installation within compatible SMISSLINE assemblies. Its thermal and electromagnetic tripping mechanisms protect circuits against sustained overloads and short-circuit faults, while the Type D characteristic makes the breaker particularly suitable for loads that can produce relatively high starting or inrush currents.
With two protected poles and a 400 V AC rated voltage, the S402M-D20 is well suited to commercial and industrial distribution applications. Its compact two-module format, plug-in mounting and compatibility with auxiliary devices make it a practical protective component for modern control panels and electrical distribution systems.
Key Advantages
- 20 A rated current for reliable protection of compatible electrical circuits.
- 2-pole configuration with both poles protected.
- Type D tripping characteristic suited to loads with higher starting and inrush currents.
- 10 kA rated short-circuit breaking capacity to EN 60898.
- Purpose-designed for the ABB SMISSLINE TP plug-in system.
- Thermal and electromagnetic protection against overload and short-circuit conditions.
Key Features
- ABB S400M series miniature circuit breaker.
- 20 A nominal current rating.
- Type D tripping characteristic.
- 2 protected poles.
- 400 V AC rated voltage.
- 10 kA breaking capacity to EN 60898.
- 440 V rated insulation voltage.
- 4 kV rated impulse withstand voltage.
- IP20 protection rating.
- SMISSLINE plug-in mounting for compatible distribution systems.
- Compact two-module design.
Reliable Circuit Protection for High-Inrush Loads
Miniature circuit breakers such as the ABB S402M-D20 protect electrical circuits against excessive current caused by overloads and short circuits. A thermal release responds to sustained overload conditions, while an electromagnetic release provides rapid interruption when high short-circuit currents occur.
The Type D characteristic is particularly useful for circuits supplying equipment with comparatively high starting currents, helping reduce unwanted tripping during normal start-up conditions while maintaining essential circuit protection. Combined with ABB SMISSLINE plug-in technology, the S402M-D20 provides a compact and practical solution for industrial electrical distribution.
Typical Applications
- ABB SMISSLINE TP electrical distribution systems.
- Industrial control panels and switchboards.
- Circuits supplying motors and other inductive loads.
- Equipment with relatively high starting or inrush currents.
- Commercial and industrial electrical distribution.
- Machine and automation power distribution systems.
Technical Specifications
| Series | S400M / SMISSLINE TP |
|---|---|
| ABB order code | 2CCS572001R0201 |
| EAN | 7612270102310 |
| Product type | Miniature circuit breaker (MCB) |
| Number of poles | 2 |
| Number of protected poles | 2 |
| Rated current | 20 A |
| Tripping characteristic | Type D |
| Rated voltage | 400 V AC |
| Rated short-circuit breaking capacity (Icn) | 10 kA at 400 V AC |
| Frequency | 50–60 Hz |
| Rated insulation voltage (Ui) | 440 V |
| Rated impulse withstand voltage (Uimp) | 4 kV |
| Energy limiting class | 3 |
| Overvoltage category | III |
| Pollution degree | 3 |
| Protection rating | IP20 |
| Mounting type | SMISSLINE plug-in |
| Width | 2 modules / 36 mm |
| Installation depth | 75 mm |
| Operating temperature | −25 to +60 °C |
| Connectable stranded conductor | 0.75–25 mm² |
| Connectable solid conductor | 0.75–35 mm² |
| Standard | IEC/EN 60898-1 |
Frequently Asked Questions
What is the ABB S402M-D20 used for?
The ABB S402M-D20 is a 2-pole miniature circuit breaker used to protect electrical circuits against overload and short-circuit currents in compatible ABB SMISSLINE distribution systems.
What is the current rating of the S402M-D20?
The S402M-D20 has a rated current of 20 A.
What does the Type D characteristic mean?
The Type D tripping characteristic is suitable for circuits with comparatively high starting or inrush currents, such as those associated with motors and other inductive equipment.
What is the breaking capacity of the ABB S402M-D20?
The S402M-D20 has a rated short-circuit breaking capacity of 10 kA at 400 V AC to EN 60898.
How is the S402M-D20 installed?
The circuit breaker is designed for plug-in installation in compatible ABB SMISSLINE TP systems, allowing straightforward integration into modular electrical distribution assemblies.
Trusted ABB Circuit Protection
ABB SMISSLINE protective devices combine modular plug-in distribution technology with dependable overload and short-circuit protection for commercial and industrial electrical installations.
