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ABB S203MT-K13NA MCB – S200M – 3P+N – K – 13A
ABB S203MT-K13NA miniature circuit breaker, a 13 A 3-pole plus neutral K curve MCB from the ABB S200MT range for overload and short-circuit protection in low-voltage electrical installations.
£198.73
Why Choose the ABB S203MT-K13NA Miniature Circuit Breaker?
The ABB S203MT-K13NA is a compact and reliable miniature circuit breaker (MCB) designed to provide overload and short-circuit protection in low-voltage electrical installations. As part of the ABB S200MT miniature circuit breaker range, it is developed for demanding industrial, traction and railway applications where dependable protection and compact installation are essential.
This circuit breaker features a K curve tripping characteristic, making it suitable for circuits with higher inrush currents such as motors, control transformers, solenoids and other inductive loads. Its current limiting performance helps reduce fault energy, supporting safer operation and improved protection for cables, switchgear and connected equipment.
With a rated current of 13 A and a 3-pole plus neutral configuration, the ABB S203MT-K13NA is ideal for three-phase systems where the neutral conductor must switch together with the protected phases. Its DIN rail mounting format allows fast installation inside control panels, distribution boards, switchgear cabinets and machinery enclosures.
Key Advantages
- Compact miniature circuit breaker for circuit protection.
- 13 A rated current for low-voltage electrical circuits.
- 3-pole plus neutral configuration for three-phase systems with switched neutral.
- K curve tripping characteristic for circuits with higher inrush currents.
- 10 kA breaking capacity for dependable short-circuit protection.
- DIN rail mounting for quick installation in electrical enclosures.
Key Features
- ABB S200MT miniature circuit breaker series.
- 13 A nominal current rating.
- 3 protected poles plus neutral.
- K type tripping curve for inductive loads.
- Thermal tripping mechanism for overload protection.
- Electromechanical tripping mechanism for short-circuit protection.
- Current limiting class 3 performance.
- Compatible with ABB System pro M compact accessories.
Reliable Circuit Protection for Inductive Loads
Miniature circuit breakers such as the ABB S203MT-K13NA protect electrical circuits by automatically disconnecting the supply when overload or short-circuit faults occur. This helps prevent cable damage, equipment failure and unsafe fault conditions in control and distribution systems.
The K curve characteristic allows higher transient inrush currents while still providing dependable short-circuit protection. This makes the S203MT-K13NA suitable for circuits supplying motors, transformers, contactor coils and other inductive equipment where nuisance tripping should be avoided during normal start-up conditions.
Typical Applications
- Industrial control panels and automation systems.
- Railway and traction electrical installations.
- Three-phase circuits requiring switched neutral protection.
- Distribution boards and switchgear assemblies.
- Motor, transformer and inductive load circuits.
- Machine building and OEM electrical systems.
Technical Specifications
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| Current | 13 A | |
|---|---|---|
| Phase | Three Phase | |
| Poles | 3-pole + N | |
| Device Type | MCB | |
| Trip Curve | K curve | |
| Breaking Capacity | 10 kA | |
| Manufacturer | ABB | |
| Series | S200MT | |
| Model | S203MT-K13NA | |
| Order code | 2CDS273106R0447 | |
| Product type | Miniature circuit breaker | |
| Rated current | 13 A | |
| Number of poles | 3 protected poles + neutral | |
| Total pole configuration | 4 pole | |
| Tripping characteristic | K curve | |
| Rated voltage | 440 V AC | |
| Rated insulation voltage | 440 V | |
| Rated impulse withstand voltage | 4 kV | |
| Rated frequency | 50 / 60 Hz | |
| Breaking capacity | 10 kA | |
| Current limiting class | Class 3 | |
| Protection rating | IP20 | |
| Mounting type | DIN rail mounting | |
| Built-in depth | approx. 69 mm | |
| Dimensions (H × W × D) | approx. 88 × 70 × 69 mm | |
| HS Code | 85362010 | |
| Country of Manufacture | Germany |
Frequently Asked Questions
What is the ABB S203MT-K13NA used for?
The ABB S203MT-K13NA is used to protect low-voltage electrical circuits against overloads and short circuits, particularly in control panels, distribution boards, railway systems and inductive load applications.
What is the current rating of this MCB?
This miniature circuit breaker has a rated current of approximately 13 A.
What does 3-pole plus neutral mean?
It means the device has three protected poles for phase conductors and an additional neutral pole that switches with the circuit.
What does the K curve characteristic mean?
The K curve is designed to tolerate higher inrush currents, making it suitable for motors, transformers and inductive loads while still providing short-circuit protection.
Where is this MCB typically installed?
The ABB S203MT-K13NA is typically installed on DIN rail inside electrical control panels, distribution boards, switchgear cabinets and machinery enclosures.
Trusted by Electrical Engineers Worldwide
ABB S200MT miniature circuit breakers are widely used by panel builders, railway system engineers and electrical installers to deliver dependable circuit protection in demanding low-voltage applications.
