ABB S203MT-K63H10 miniature circuit breaker, a 3-pole 63 A K curve MCB with 10 kA breaking capacity for industrial, commercial and railway electrical protection.
The ABB S203MT-K63H10 is a robust miniature circuit breaker (MCB) designed to provide dependable protection against overloads and short circuits in demanding electrical installations. As part of the ABB S200MT miniature circuit breaker range, this 3-pole device is suitable for industrial, commercial and railway applications where reliable circuit protection is essential.
With a 63 A rated current and K-type tripping characteristic, the S203MT-K63H10 is well suited to circuits with higher inrush currents, including motors, transformers and inductive loads. Its current-limiting design helps reduce fault energy and protect downstream equipment during short-circuit conditions.
The ABB S203MT-K63H10 features a compact DIN rail mounting format, a 10 kA rated short-circuit capacity and durable 3-pole construction for three-phase circuit protection. It is designed for straightforward installation inside control panels, electrical cabinets and distribution boards.
Miniature circuit breakers such as the ABB S203MT-K63H10 automatically disconnect electrical circuits when overload or short-circuit faults occur. This helps protect cables, connected loads and downstream components from excessive current and fault energy.
The K curve characteristic makes this MCB suitable for applications where higher starting currents are expected, including motors, transformers and other inductive loads. Its 3-pole configuration allows simultaneous protection and isolation of three-phase circuits in professional electrical systems.
| Current | 63 A |
|---|---|
| Phase | Three Phase |
| Manufacturer | ABB |
| Series | S200MT |
| Model | S203MT-K63H10 |
| MPN | 2CDV273006R0607 |
| Product type | Miniature circuit breaker |
| Number of poles | 3P |
| Rated current | 63 A |
| Tripping characteristic | K curve |
| Rated short-circuit capacity | 10 kA |
| Rated operational voltage | up to 440 V AC |
| Rated frequency | 50 / 60 Hz |
| Protection rating | IP20 |
| Mounting type | DIN rail mounting |
| Dimensions (H × W × D) | approx. 88 × 52.5 × 69 mm |
| Product range | System pro M compact |
The ABB S203MT-K63H10 is used to protect three-phase electrical circuits against overloads and short circuits.
This miniature circuit breaker has a rated current of 63 A.
The K curve is designed for circuits with higher inrush currents, making it suitable for motors, transformers and other inductive loads.
The ABB S203MT-K63H10 is a 3-pole miniature circuit breaker.
It is typically installed on DIN rail inside electrical cabinets, control panels and distribution boards.
ABB S200MT miniature circuit breakers are used by panel builders, electrical engineers and automation specialists to deliver reliable circuit protection in industrial, commercial and railway applications.
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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...