ABB S203M-K1.6NA 4 pole miniature circuit breaker with 1.6 A rated current, K curve tripping characteristic and DIN rail mounting for professional circuit protection.
£187.71
The ABB S203M-K1.6NA is a precision 4-pole miniature circuit breaker (MCB) from the ABB System pro M compact S200M series. Designed for reliable protection against overloads and short circuits, it is suitable for industrial, commercial and control panel applications where dependable circuit protection and compact DIN rail installation are required.
This MCB uses ABB's current-limiting technology with a delayed thermal tripping mechanism for overload protection and an electromechanical tripping mechanism for short-circuit protection. Its K curve characteristic is designed for circuits with higher inrush currents, making it especially suitable for inductive loads, control transformers, motors and industrial equipment.
With a 1.6 A rated current, K curve tripping characteristic and 4-pole configuration, the S203M-K1.6NA provides professional-grade protection for three-phase circuits with neutral switching. Its robust construction, compact footprint and compatibility with ABB System pro M compact accessories make it a practical choice for modern electrical distribution systems.
Miniature circuit breakers protect electrical circuits by automatically disconnecting the supply when overloads or short circuits occur. The ABB S203M-K1.6NA combines thermal and magnetic trip mechanisms to provide accurate protection while helping reduce the risk of damage to cables, equipment and connected loads.
The K curve characteristic makes this MCB suitable for applications where temporary inrush currents may occur during normal operation. This makes it a dependable solution for industrial control systems, transformers, motors and automation equipment requiring selective and stable circuit protection.
| Current | 1.6 A |
|---|---|
| Phase | Single Phase |
| Manufacturer | ABB |
| Series | System pro M compact S200M |
| Model | S203M-K1.6NA |
| Product ID | 2CDS273103R0257 |
| EAN | 4016779659468 |
| Product type | Miniature circuit breaker (MCB) |
| Rated current | 1.6 A |
| Tripping characteristic | K |
| Number of poles | 4 pole |
| Rated operational voltage | 400 V AC |
| Rated insulation voltage | 440 V |
| Frequency | 50 / 60 Hz |
| Rated short-circuit breaking capacity | 10 kA |
| Rated ultimate short-circuit breaking capacity | 15 kA at 400 V AC |
| Protection rating | IP20 |
| Mounting type | DIN rail |
| Terminal type | Screw terminals |
| Dimensions (H × W × D) | approx. 88 × 70 × 69 mm |
| HS Code | 85362010 |
| Country of Manufacture | Germany |
The ABB S203M-K1.6NA is used to protect electrical circuits against overloads and short circuits in industrial, commercial and control panel applications.
This MCB has a 1.6 A rated current, making it suitable for precise low-current circuit protection.
A K curve breaker is designed for circuits with higher inrush currents, such as inductive loads, transformers, motors and industrial control equipment.
The ABB S203M-K1.6NA has a 4-pole configuration, making it suitable for three-phase circuits with neutral switching.
The S203M-K1.6NA is designed for standard DIN rail mounting in electrical distribution boards, control panels and machine cabinets.
ABB System pro M compact miniature circuit breakers are trusted by electrical contractors, panel builders and engineers for reliable protection, compact installation and dependable performance in modern electrical systems.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...