ABB S203MT-Z10H01 three pole 10A Z characteristic miniature circuit breaker designed for railway, traction and industrial electrical protection with 10 kA short circuit capacity.
The ABB S203MT-Z10H01 is a dependable 3-pole miniature circuit breaker (MCB) designed for overload and short circuit protection in railway, traction and industrial electrical systems. Part of the ABB S200MT miniature circuit breaker series, it is built for demanding installations where reliable protection, compact design and long service life are essential.
With a Z characteristic tripping curve, the S203MT-Z10H01 is suitable for sensitive electronic equipment, instrumentation, signalling circuits and control systems. Its rapid magnetic tripping response helps disconnect lower-level fault currents quickly, reducing the risk of damage to sensitive electrical components.
Featuring a 10 A rated current, 3-pole configuration and 10 kA rated short circuit capacity, the ABB S203MT-Z10H01 is ideal for railway vehicles, industrial control panels, OEM machinery and automation systems requiring dependable three-phase circuit protection.
Miniature circuit breakers such as the ABB S203MT-Z10H01 protect electrical installations by disconnecting circuits during overload or short circuit conditions. The delayed thermal trip mechanism responds to overloads, while the electromagnetic trip mechanism reacts rapidly to short circuit faults.
The Z curve characteristic makes this MCB a strong choice for applications where sensitive equipment requires fast fault detection. This helps support safe operation in control panels, signalling systems and automation circuits where low fault currents must be cleared quickly.
| Current | 10 A |
|---|---|
| Phase | Three Phase |
| Manufacturer | ABB |
| Series | S200MT |
| Model | S203MT-Z10H01 |
| Alternative model | S203MT-Z10 |
| Product ID | 2CDS273006R0428 |
| EAN | 4016779770231 |
| Product type | Miniature Circuit Breaker (MCB) |
| Rated current | 10 A |
| Tripping characteristic | Z |
| Number of poles | 3 |
| Rated operational voltage | Up to 400 V AC |
| Rated insulation voltage | 440 V |
| Frequency | 50 / 60 Hz |
| Rated short circuit capacity | 10 kA |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2 |
| Protection rating | IP20 |
| Mounting type | DIN rail |
| Dimensions (H × W × D) | approx. 88 × 52.5 × 69 mm |
| Weight | approx. 0.375 kg |
The ABB S203MT-Z10H01 is used to protect three-phase electrical circuits against overloads and short circuits in railway, industrial and automation applications.
This miniature circuit breaker has a 10 A rated current.
The Z characteristic provides rapid magnetic tripping at relatively low fault current levels, making it suitable for sensitive electronic equipment, instrumentation and control circuits.
The ABB S203MT-Z10H01 has a 3-pole (3P) configuration for three-phase circuit protection.
It is designed for standard DIN rail mounting inside electrical distribution boards, control panels and machine cabinets.
ABB S200MT miniature circuit breakers are widely used by panel builders, OEMs and railway engineers for reliable protection of electrical circuits in demanding transport and industrial environments.
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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...