ABB S203MT-Z63H10 miniature circuit breaker, a 3-pole 63 A Z curve MCB with 10 kA breaking capacity for sensitive circuit protection in industrial, commercial and railway electrical systems.
The ABB S203MT-Z63H10 is a dependable miniature circuit breaker (MCB) designed to provide reliable 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 suited to industrial, commercial and railway applications where sensitive circuit protection is required.
With a 63 A rated current and Z-type tripping characteristic, the S203MT-Z63H10 provides sensitive magnetic tripping for circuits requiring rapid fault disconnection. This makes it suitable for specialist electrical systems, control circuits and applications where fast short-circuit response is important.
The ABB S203MT-Z63H10 features a compact DIN rail mounting format, robust current-limiting performance and a 10 kA rated short-circuit capacity. Its modular 3-pole construction supports straightforward installation inside electrical cabinets, distribution boards and industrial control panels.
Miniature circuit breakers such as the ABB S203MT-Z63H10 automatically disconnect electrical circuits when overload or short-circuit faults occur. This helps protect cables, connected equipment and downstream components from excessive current and fault energy.
The Z curve characteristic provides fast magnetic tripping sensitivity, making this MCB suitable for circuits where rapid disconnection is required. Its 3-pole configuration allows simultaneous protection and isolation of three-phase circuits in industrial control panels, distribution boards and specialist electrical installations.
| Current | 63 A |
|---|---|
| Phase | Three Phase |
| Manufacturer | ABB |
| Series | S200MT |
| Model | S203MT-Z63H10 |
| MPN | 2CDV273006R0608 |
| Product type | Miniature circuit breaker |
| Number of poles | 3P |
| Rated current | 63 A |
| Tripping characteristic | Z curve |
| Rated short-circuit capacity | 10 kA |
| Rated operational voltage | up to 440 V AC |
| Rated insulation voltage | 440 V |
| Rated impulse withstand voltage | 4 kV |
| Rated frequency | 50 / 60 Hz |
| Protection rating | IP20 |
| Mounting type | DIN rail mounting |
| Dimensions (H × W × D) | approx. 88 × 52.5 × 69 mm |
The ABB S203MT-Z63H10 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 Z curve provides sensitive short-circuit tripping, making the MCB suitable for circuits requiring fast magnetic protection.
The ABB S203MT-Z63H10 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 transport specialists to deliver dependable circuit protection in demanding 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...