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2CCS573001R0337 ABB S403M-K4 Miniature Circuit Breaker 4 A 3P Type K 10 kA
ABB S403M-K4 is a 4 A three-pole Type K miniature circuit breaker with 10 kA short-circuit breaking capacity, designed for reliable overload and short-circuit protection in ABB SMISSLINE TP electrical distribution systems.
£97.25
Why Choose the ABB S403M-K4 Miniature Circuit Breaker?
The ABB S403M-K4 is a high-performance three-pole miniature circuit breaker (MCB) designed to provide reliable overload and short-circuit protection in commercial and industrial electrical distribution systems. As part of the ABB SMISSLINE TP S400M series, it combines dependable circuit protection with the convenience of ABB's plug-in distribution system.
This current-limiting circuit breaker provides thermal overload protection together with rapid electromagnetic protection against short-circuit currents. Its SMISSLINE plug-in design enables efficient installation and replacement within compatible distribution systems while reducing conventional supply-side wiring requirements.
With a rated current of 4 A, a Type K tripping characteristic and a 10 kA short-circuit breaking capacity, the S403M-K4 is particularly suitable for three-phase circuits containing equipment with higher starting or inrush currents. Its three-pole configuration provides coordinated protection across all three phases.
Key Advantages
- Reliable three-pole miniature circuit breaker for three-phase circuit protection.
- 4 A rated current for low-current industrial and control circuits.
- Type K tripping characteristic suitable for loads with higher starting currents.
- 10 kA short-circuit breaking capacity.
- Thermal and electromagnetic protection against overloads and short circuits.
- SMISSLINE TP plug-in connection supports efficient installation and maintenance.
Key Features
- ABB SMISSLINE TP S400M series.
- 4 A rated current.
- Three-pole configuration.
- Type K tripping characteristic.
- 10 kA short-circuit breaking capacity.
- Rated for use on 240/415 V AC systems.
- Thermal overload and electromagnetic short-circuit protection.
- Plug-in design for the ABB SMISSLINE TP system.
- IP20 degree of protection.
Reliable Protection for Three-Phase Circuits
Miniature circuit breakers such as the ABB S403M-K4 protect electrical circuits against excessive current caused by overloads and short circuits. The thermal release responds to sustained overload conditions, while the electromagnetic release provides rapid interruption when a short circuit occurs.
The Type K characteristic is particularly useful where equipment can produce elevated starting currents during normal operation. Combined with the SMISSLINE TP plug-in system, the S403M-K4 provides a practical protection solution for industrial control, machinery and electrical distribution applications.
Typical Applications
- Three-phase industrial control circuits.
- Motors and equipment with elevated starting currents.
- Industrial electrical distribution panels.
- Machinery and automation systems.
- Commercial and industrial power distribution.
- ABB SMISSLINE TP modular distribution systems.
Technical Specifications
| Series | SMISSLINE TP S400M |
|---|---|
| ABB order code | 2CCS573001R0337 |
| Product type | Miniature circuit breaker (MCB) |
| Rated current | 4 A |
| Number of poles | 3 |
| Tripping characteristic | Type K |
| Rated AC voltage | 240/415 V AC |
| Short-circuit breaking capacity | 10 kA |
| Rated ultimate short-circuit capacity (Icu) | 25 kA at 415 V AC |
| Protection rating | IP20 |
| Connection / mounting system | SMISSLINE TP plug-in |
| Standard | IEC/EN 60947-2 |
| Operating ambient temperature | -25 to +55 °C |
| Dimensions (W × H × D) | 54 × 91 × 75 mm |
| Net weight | approx. 401 g |
| EAN | 7612270103195 |
Frequently Asked Questions
What is the ABB S403M-K4 used for?
The S403M-K4 is a three-pole miniature circuit breaker used to protect three-phase electrical circuits against overloads and short circuits, particularly where loads may have elevated starting currents.
What is the current rating of the ABB S403M-K4?
The circuit breaker has a rated current of 4 A.
What does the Type K characteristic mean?
The Type K tripping characteristic is designed to accommodate higher starting and inrush currents while still providing reliable overload and short-circuit protection.
What is the short-circuit breaking capacity of the S403M-K4?
The ABB S403M-K4 has a 10 kA short-circuit breaking capacity, with a rated ultimate short-circuit capacity (Icu) of 25 kA at 415 V AC.
Which distribution system is the S403M-K4 designed for?
The circuit breaker is designed as a plug-in protective device for the ABB SMISSLINE TP distribution system.
Trusted ABB Circuit Protection
ABB SMISSLINE TP circuit protection devices provide a modular plug-in approach to electrical distribution, combining reliable overload and short-circuit protection with efficient installation for commercial and industrial applications.
