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2CCG000521R0001 ABB S403P-B20 MCB 30 kA 3P Type B 20 A
ABB S403P-B20 is a 20 A Type B 3-pole miniature circuit breaker rated at 415 V AC with 30 kA ultimate short-circuit breaking capacity for the SMISSLINE TP plug-in system.
£88.29
Why Choose the ABB S403P-B20 Miniature Circuit Breaker?
The ABB S403P-B20 is a high-performance 3-pole miniature circuit breaker (MCB) designed for reliable overload and short-circuit protection in low-voltage electrical distribution systems. As part of the ABB S400P range for the SMISSLINE TP plug-in system, it combines dependable current-limiting circuit protection with a flexible plug-in architecture for commercial and industrial installations.
This MCB features a Type B tripping characteristic and a rated current of 20 A. The Type B characteristic is suited to circuits with relatively low starting currents, while thermal and electromagnetic tripping mechanisms provide protection against sustained overloads and short-circuit faults.
With a rated operational voltage of 415 V AC and an ultimate short-circuit breaking capacity of 30 kA at 230 V and 400 V, the S403P-B20 provides robust fault protection for three-pole circuits. Its SMISSLINE TP plug-in connection supports efficient installation, servicing and future modifications within compatible electrical distribution assemblies.
Key Advantages
- High-performance miniature circuit breaker for the SMISSLINE TP plug-in system.
- 20 A rated current for low-voltage circuit protection.
- Type B tripping characteristic suitable for circuits with relatively low starting currents.
- 30 kA ultimate short-circuit breaking capacity at 230 V and 400 V.
- 3-pole configuration with all three poles protected.
- Energy limiting class 3 for effective fault-current limitation.
- Plug-in architecture supports efficient installation, maintenance and system expansion.
Key Features
- ABB S400P miniature circuit breaker range.
- SMISSLINE TP plug-in system compatibility.
- 20 A rated current.
- 415 V AC rated operational voltage.
- Type B characteristic.
- 3-pole configuration with three protected poles.
- 30 kA Icu at 230 V and 400 V.
- 440 V rated insulation voltage.
- 4 kV rated impulse withstand voltage.
- IP20 degree of protection.
- Terminal capacity up to 35 mm² for solid conductors.
- Compact three-module device format.
- Designed in accordance with IEC/EN 60898-1 and IEC/EN 60947-2.
Reliable Circuit Protection for SMISSLINE TP Systems
Miniature circuit breakers such as the ABB S403P-B20 protect electrical cables and circuits against overload and short-circuit currents. A delayed thermal tripping mechanism responds to sustained overload conditions, while an electromagnetic tripping mechanism provides rapid disconnection during short-circuit faults.
The ABB SMISSLINE TP system uses a plug-in distribution architecture that allows compatible protective devices to connect directly to the socket system. This approach supports flexible electrical distribution designs while helping simplify installation, servicing and future modifications within control panels and distribution assemblies.
Typical Applications
- Low-voltage electrical distribution systems.
- Commercial and industrial distribution boards.
- Three-pole branch and distribution circuits.
- Circuits with relatively low starting currents.
- Control panels and electrical switchboards.
- Machinery and industrial automation systems.
- ABB SMISSLINE TP plug-in distribution assemblies.
Technical Specifications
| Product group | SMISSLINE Plug-in System |
|---|---|
| Series | S400P |
| ABB order code | 2CCG000521R0001 |
| Product type | Miniature circuit breaker (MCB) |
| Rated current | 20 A |
| Rated operational voltage | 415 V AC |
| Tripping characteristic | Type B |
| Pole configuration | 3P |
| Total poles | 3 |
| Protected poles | 3 |
| Ultimate short-circuit breaking capacity (Icu) at 230 V | 30 kA |
| Ultimate short-circuit breaking capacity (Icu) at 400 V | 30 kA |
| Rated 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 |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2 |
| Number of modules | 3 |
| Width | 54 mm |
| Height | 85 mm |
| Installation depth | 91 mm |
| Operating ambient temperature | -25 to +60 °C |
| Solid conductor connection | 0.75–35 mm² |
| Stranded conductor connection | 0.75–25 mm² |
| Power loss | 6 W |
| Weight | 0.345 kg |
| EAN / GTIN | 7612271508913 |
| Packaging unit | 4 pieces |
| Mounting system | SMISSLINE TP plug-in socket system |
Frequently Asked Questions
What is the ABB S403P-B20 used for?
The S403P-B20 is a three-pole miniature circuit breaker designed to provide overload and short-circuit protection for low-voltage circuits within the ABB SMISSLINE TP plug-in system.
What is the rated current of the ABB S403P-B20?
The S403P-B20 has a rated current of 20 A and a Type B tripping characteristic.
What is the breaking capacity of the S403P-B20?
The S403P-B20 has an ultimate short-circuit breaking capacity (Icu) of 30 kA at 230 V and 400 V.
How many poles does the ABB S403P-B20 have?
The S403P-B20 is a 3-pole MCB with three protected poles and occupies three modules within the SMISSLINE TP system.
What is the ABB order code for the S403P-B20?
The ABB order code for the S403P-B20 is 2CCG000521R0001.
Trusted Circuit Protection from ABB
ABB S400P miniature circuit breakers for the SMISSLINE TP system combine high-performance circuit protection with a flexible plug-in architecture, supporting efficient installation and dependable low-voltage power distribution in commercial and industrial applications.
