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2CCS572001R0577 ABB S402M-K50 50 A 2-Pole Type K Miniature Circuit Breaker
ABB S402M-K50 is a 50 A 2-pole Type K miniature circuit breaker for the SMISSLINE TP plug-in system, providing reliable overload and short-circuit protection with a 10 kA breaking capacity.
£96.86
Why Choose the ABB S402M-K50 Miniature Circuit Breaker?
The ABB S402M-K50 is a high-performance 2-pole miniature circuit breaker (MCB) designed to provide reliable overload and short-circuit protection in industrial and commercial electrical distribution systems. As part of the ABB S400M / SMISSLINE TP plug-in system, it combines dependable circuit protection with convenient plug-in installation for modular distribution assemblies.
This circuit breaker has a rated current of 50 A and a Type K tripping characteristic, making it particularly suitable for circuits supplying equipment with elevated starting or inrush currents. Its two protected poles provide coordinated circuit protection, while the SMISSLINE plug-in design helps simplify installation, replacement and maintenance within compatible ABB distribution systems.
With a rated short-circuit breaking capacity of 10 kA to EN 60898 and rated operational voltages of 240/415 V AC, the S402M-K50 is well suited to demanding machinery, control and electrical distribution applications. Its compact two-module construction, IP20 protection and robust ABB design provide an effective solution where reliable protection and efficient panel installation are required.
Key Advantages
- Reliable 2-pole miniature circuit breaker for overload and short-circuit protection.
- 50 A rated current for industrial and commercial distribution circuits.
- Type K tripping characteristic suitable for equipment with elevated starting and inrush currents.
- 10 kA short-circuit breaking capacity to EN 60898.
- Rated for 240/415 V AC electrical systems.
- Designed for the ABB SMISSLINE TP plug-in system.
- Two protected poles provide coordinated overcurrent protection.
- Compact 2-module design helps optimise distribution-board space.
Key Features
- ABB S400M / SMISSLINE TP series.
- 50 A rated current.
- 2-pole configuration.
- Type K tripping characteristic.
- 10 kA rated short-circuit breaking capacity to EN 60898.
- 240/415 V AC rated operational voltage.
- 440 V rated insulation voltage.
- 4 kV rated impulse withstand voltage.
- 50–60 Hz frequency.
- IP20 degree of protection.
- Plug-in SMISSLINE mounting for modular distribution systems.
- Compact 36 × 91 × 75 mm enclosure.
Reliable Circuit Protection for Industrial Loads
Miniature circuit breakers such as the ABB S402M-K50 automatically disconnect a circuit when excessive current occurs because of an overload or short circuit. This helps protect conductors, connected equipment and electrical installations from damage while allowing the breaker to be reset after the underlying fault has been identified and corrected.
The Type K characteristic is particularly useful for circuits supplying equipment that can experience elevated starting currents during normal operation. Combined with ABB's SMISSLINE TP plug-in architecture, the S402M-K50 provides effective protection while supporting efficient installation, replacement and maintenance in compatible modular distribution systems.
Typical Applications
- Industrial electrical distribution boards.
- Machine control panels and automation systems.
- Motor and inductive-load circuits.
- Circuits with elevated starting or inrush currents.
- Industrial production and processing machinery.
- Commercial electrical distribution systems.
- OEM machinery and electrical control equipment.
- ABB SMISSLINE TP modular distribution assemblies.
Technical Specifications
| Product group | SMISSLINE Plug-in System |
|---|---|
| Range | SMISSLINE TP |
| Series | S400M |
| ABB order code | 2CCS572001R0577 |
| Product type | Miniature circuit breaker (MCB) |
| Rated current | 50 A |
| Number of poles | 2 |
| Number of protected poles | 2 |
| Tripping characteristic | Type K |
| Rated short-circuit breaking capacity Icn | 10 kA to EN 60898 |
| Rated operational voltage | 240/415 V AC |
| Rated insulation voltage | 440 V |
| Rated impulse withstand voltage | 4 kV |
| Frequency | 50–60 Hz |
| Protection rating | IP20 |
| Mounting type | Plug-in SMISSLINE |
| Module width | 2 modules |
| Connectable solid conductor | 0.75–35 mm² |
| Connectable multi-wired conductor | 0.75–25 mm² |
| Operating ambient temperature | -25 to +60 °C |
| Dimensions (W × H × D) | 36 × 91 × 75 mm |
| Weight | approx. 221 g |
| EAN | 7612270102525 |
| Standard | IEC/EN 60947-2 |
Frequently Asked Questions
What is the ABB S402M-K50 used for?
The ABB S402M-K50 is a 2-pole miniature circuit breaker used to protect electrical circuits against overload and short-circuit currents, particularly in industrial and machinery applications where loads may have elevated starting currents.
What is the current rating of the S402M-K50?
The S402M-K50 has a rated current of 50 A.
What does the Type K tripping characteristic mean?
The Type K tripping characteristic is suited to circuits containing equipment with elevated starting or inrush currents, including appropriate motor, transformer and other inductive-load applications.
What is the breaking capacity of the ABB S402M-K50?
The S402M-K50 has a rated short-circuit breaking capacity of 10 kA to EN 60898.
How is the ABB S402M-K50 installed?
The breaker is designed for plug-in installation within compatible ABB SMISSLINE TP distribution systems, helping simplify protective-device installation, replacement and maintenance.
Trusted ABB Circuit Protection
ABB SMISSLINE TP miniature circuit breakers provide dependable overload and short-circuit protection for professional electrical distribution systems, combining proven protective technology with the flexibility and convenience of a modular plug-in platform.
