ABB S203MT-C3NA 3P+N miniature circuit breaker with 3 A rated current, C curve tripping characteristic and 10 kA breaking capacity for professional circuit protection.
£195.24
The ABB S203MT-C3NA is a compact and reliable 3P+N miniature circuit breaker (MCB) from the ABB System pro M compact S200MT series. Designed to protect electrical circuits against overloads and short circuits, it is suitable for commercial, industrial and control panel installations requiring dependable circuit protection and neutral switching.
This miniature circuit breaker 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 C curve characteristic makes it suitable for general-purpose circuits with moderate inrush currents, including lighting, small motors, control circuits and distribution applications.
With a 3 A rated current, 3P+N configuration and 10 kA breaking capacity, the S203MT-C3NA provides professional-grade protection for low-current three-phase circuits with neutral switching. Its DIN rail mounting format enables efficient installation in distribution boards, control panels and machine enclosures.
Miniature circuit breakers protect electrical circuits by automatically disconnecting the supply when overloads or short circuits occur. The ABB S203MT-C3NA combines thermal and magnetic tripping technologies to help protect wiring, connected equipment and control components from electrical faults.
The C curve characteristic provides a practical balance between sensitivity and tolerance to temporary inrush currents. This makes the S203MT-C3NA suitable for a wide range of low-current industrial, commercial and automation circuits.
| Current | 3 A |
|---|---|
| Phase | Three Phase |
| Manufacturer | ABB |
| Series | System pro M compact S200MT |
| Model | S203MT-C3NA |
| Product ID | 2CDS273106R0034 |
| EAN | 4016779771450 |
| Product type | Miniature circuit breaker (MCB) |
| Rated current | 3 A |
| Tripping characteristic | C |
| Number of poles | 3P+N |
| Protected poles | 3 |
| 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 |
| Built-in depth | approx. 69 mm |
| Dimensions (H × W × D) | approx. 88 × 70 × 69 mm |
| Weight | approx. 0.5 kg |
| HS Code | 85362010 |
| Country of Manufacture | Germany |
The ABB S203MT-C3NA is used to protect low-current three-phase circuits with neutral against overloads and short circuits.
The ABB S203MT-C3NA has a 3 A rated current.
A C curve breaker is suitable for general-purpose circuits with moderate inrush currents, such as lighting, control circuits and small inductive loads.
The S203MT-C3NA has a 3P+N configuration, with three protected poles and a switched neutral.
The ABB S203MT-C3NA is designed for standard DIN rail mounting in distribution boards, control panels and machine cabinets.
ABB System pro M compact miniature circuit breakers are trusted by electrical contractors, panel builders and industrial 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...