Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
2CCS573001R0504 ABB S403M-C50 Miniature Circuit Breaker 50 A 3P Type C 10 kA
ABB S403M-C50 is a 50 A three-pole Type C miniature circuit breaker with 10 kA rated short-circuit breaking capacity, designed for reliable overload and short-circuit protection in ABB SMISSLINE TP electrical distribution systems.
£146.38
Why Choose the ABB S403M-C50 Miniature Circuit Breaker?
The ABB S403M-C50 is a current-limiting three-pole miniature circuit breaker (MCB) designed to provide reliable overload and short-circuit protection in commercial, industrial and critical power installations. As part of the ABB SMISSLINE TP S400M series, it combines dependable circuit protection with the installation efficiency of ABB's plug-in distribution system.
The S403M-C50 uses two complementary tripping mechanisms: a delayed thermal release for overload protection and an electromechanical release for short-circuit protection. Its plug-in configuration is specifically designed for the SMISSLINE TP system, allowing protective devices to be installed and maintained efficiently within compatible distribution assemblies.
With a rated current of 50 A, a Type C tripping characteristic and a rated short-circuit breaking capacity of 10 kA, the S403M-C50 is suitable for three-phase circuits where moderate starting and inrush currents are expected. Its three-pole configuration provides coordinated protection across all three phases.
Key Advantages
- Reliable three-pole miniature circuit breaker for three-phase circuit protection.
- 50 A rated current for commercial and industrial distribution circuits.
- Type C tripping characteristic suitable for circuits with moderate inrush currents.
- 10 kA rated short-circuit breaking capacity.
- Separate thermal overload and electromechanical short-circuit tripping mechanisms.
- SMISSLINE TP plug-in design supports efficient installation and maintenance.
Key Features
- ABB SMISSLINE TP S400M series.
- 50 A rated current.
- Three-pole configuration.
- Type C tripping characteristic.
- 10 kA rated breaking capacity.
- 230/400 V AC rated voltage.
- 50–60 Hz operating frequency.
- Current-limiting circuit breaker design.
- Plug-in connection for the ABB SMISSLINE TP system.
- IP20 degree of protection.
Reliable Protection for Three-Phase Circuits
Miniature circuit breakers such as the ABB S403M-C50 protect cables and electrical circuits against excessive current caused by overloads and short circuits. The delayed thermal tripping mechanism responds to sustained overload conditions, while the electromechanical mechanism provides rapid interruption during short-circuit faults.
The Type C characteristic is commonly suited to circuits containing equipment with moderate starting currents. Combined with the SMISSLINE TP plug-in system, the S403M-C50 provides an efficient circuit protection solution for commercial distribution, industrial equipment and critical power applications.
Typical Applications
- Three-phase commercial distribution circuits.
- Industrial electrical distribution panels.
- Machinery and automation power circuits.
- Equipment with moderate starting or inrush currents.
- Commercial, industrial and critical power installations.
- ABB SMISSLINE TP modular distribution systems.
Technical Specifications
| Series | SMISSLINE TP S400M |
|---|---|
| ABB order code | 2CCS573001R0504 |
| Product type | Miniature circuit breaker (MCB) |
| Rated current | 50 A |
| Number of poles | 3 |
| Tripping characteristic | Type C |
| Rated voltage | 230/400 V AC |
| Frequency | 50–60 Hz |
| Rated short-circuit breaking capacity (Icn) | 10 kA |
| Rated ultimate short-circuit capacity (Icu) | 15 kA |
| Rated insulation voltage (Ui) | 440 V |
| Rated impulse withstand voltage (Uimp) | 4 kV |
| Protection rating | IP20 |
| Connection / mounting system | SMISSLINE TP plug-in |
| Standards | IEC/EN 60898-1 and IEC/EN 60947-2 |
| Dimensions (W × H × D) | 54 × 91 × 82 mm |
| Weight | approx. 0.401 kg |
| EAN | 7612270103010 |
Frequently Asked Questions
What is the ABB S403M-C50 used for?
The S403M-C50 is a three-pole miniature circuit breaker used to protect three-phase electrical circuits against overloads and short circuits in commercial and industrial distribution systems.
What is the current rating of the ABB S403M-C50?
The circuit breaker has a rated current of 50 A.
What does the Type C characteristic mean?
The Type C tripping characteristic is suitable for circuits that can experience moderate starting or inrush currents during normal operation.
What is the breaking capacity of the S403M-C50?
The ABB S403M-C50 has a rated short-circuit breaking capacity (Icn) of 10 kA.
Which distribution system is the S403M-C50 designed for?
The circuit breaker uses a plug-in configuration specifically designed for the ABB SMISSLINE TP distribution system.
Trusted ABB Circuit Protection
ABB SMISSLINE TP S400M circuit breakers combine current-limiting overload and short-circuit protection with a modular plug-in system designed for efficient commercial, industrial and critical power distribution.
