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.
ABB S201M-K50NA MCB – S200M – 1P+N – K – 50A
ABB S201M-K50NA miniature circuit breaker featuring a 50 A rated current, K tripping characteristic, 1P+N configuration and 10 kA breaking capacity for reliable circuit protection.
£50.62
Why Choose the ABB S201M-K50NA Miniature Circuit Breaker?
The ABB S201M-K50NA, product code 2CDS271103R0577, is a premium 1P+N miniature circuit breaker (MCB) from the trusted ABB System pro M compact S200M range. Designed to provide dependable overload and short circuit protection, it is ideal for industrial machinery, motor control systems, OEM equipment and commercial electrical installations where reliable circuit protection is essential.
Featuring a K tripping characteristic, this MCB is specifically designed for applications with higher inrush currents, including motors, transformers, solenoids and other inductive loads. Its current limiting design combines delayed thermal overload protection with electromechanical short circuit protection, helping safeguard connected equipment while improving overall system reliability.
With a 50 A rated current, 1P+N configuration and a 10 kA breaking capacity, the ABB S201M-K50NA delivers dependable protection in a compact DIN rail mounted format suitable for modern distribution boards, switchboards and electrical control panels.
Key Advantages
- Reliable ABB System pro M compact miniature circuit breaker.
- K curve tripping characteristic for motor and inductive load protection.
- 50 A rated current with integrated neutral pole.
- 10 kA short circuit breaking capacity at 230/400 V AC.
- Current limiting design reduces thermal and mechanical stress during faults.
- Suitable for residential, commercial and industrial electrical installations.
Key Features
- ABB System pro M compact S200M series.
- Product code: 2CDS271103R0577.
- Model: S201M-K50NA.
- Rated current: 50 A.
- K tripping characteristic.
- 1P+N configuration.
- 10 kA breaking capacity according to IEC/EN 60898-1.
- 35 mm DIN rail mounting with failsafe bi-directional cylinder-lift terminals.
Reliable Protection for Motor and Inductive Load Circuits
The ABB S201M-K50NA combines delayed thermal tripping for overload protection with electromechanical tripping for short circuit protection. Its K curve characteristic is designed to withstand higher temporary starting currents while providing fast and dependable fault protection for demanding industrial applications.
As part of ABB's internationally recognised System pro M compact S200M range, this miniature circuit breaker offers dependable performance, compact installation and compatibility with a comprehensive range of ABB modular accessories for professional electrical distribution systems.
Typical Applications
- Industrial machinery.
- Motor control centres.
- Transformer protection.
- Control panels and switchboards.
- OEM automation equipment.
- Commercial and industrial power distribution.
Technical Specifications
Tick the specs you need, then view products that match.
| Current | 50 A | |
|---|---|---|
| Phase | Single Phase | |
| Poles | 1-pole + N | |
| Device Type | MCB | |
| Trip Curve | K curve | |
| Breaking Capacity | 10 kA | |
| Manufacturer | ABB | |
| Series | System pro M compact S200M | |
| Model | S201M-K50NA | |
| Product code | 2CDS271103R0577 | |
| Product type | Miniature Circuit Breaker (MCB) | |
| Rated current | 50 A | |
| Tripping characteristic | K | |
| Number of poles | 1P+N | |
| Rated voltage | 230/400 V AC | |
| Rated insulation voltage | 440 V | |
| Frequency | 50 / 60 Hz | |
| Breaking capacity | 10 kA | |
| Protection rating | IP20 | |
| Mounting type | 35 mm DIN rail | |
| Dimensions (H × W × D) | approx. 88 × 35 × 69 mm | |
| Weight | approx. 0.25 kg | |
| HS Code | 85362010 | |
| Country of Manufacture | Germany |
Frequently Asked Questions
What is the ABB S201M-K50NA used for?
This miniature circuit breaker protects electrical circuits against overloads and short circuits, particularly where motors, transformers and other inductive loads are installed.
What is the rated current of this MCB?
The ABB S201M-K50NA has a 50 A rated current.
What does the K tripping characteristic provide?
The K curve is designed for applications with higher inrush currents, making it ideal for motors, transformers and other inductive electrical equipment.
How is this circuit breaker installed?
The device mounts directly onto a standard 35 mm DIN rail inside distribution boards, switchboards and electrical control panels.
Which standards does this MCB comply with?
The ABB S201M-K50NA complies with IEC/EN 60898-1 and IEC/EN 60947-2 for residential, commercial and industrial circuit protection.
Trusted by Electrical Professionals Worldwide
ABB System pro M compact miniature circuit breakers are trusted by electrical contractors, panel builders and machine manufacturers for dependable protection, compact installation and long operational life across demanding electrical systems.
