ABB S203M-Z1 3-pole 1 A Z curve miniature circuit breaker from the System pro M compact S200M range, designed for sensitive circuit protection in commercial, industrial and control panel applications.
£150.84
The ABB S203M-Z1 is a compact and reliable 3-pole miniature circuit breaker (MCB) from the ABB System pro M compact S200M series. It is designed to protect electrical circuits against overloads and short circuits, helping maintain safe and dependable operation in commercial, industrial and control panel applications.
Featuring a Z tripping characteristic, the S203M-Z1 is particularly suitable for sensitive circuits and equipment that require rapid magnetic tripping at low fault current levels. This makes it ideal for protecting semiconductor devices, measuring circuits, control equipment and other sensitive electrical loads.
With a 1 A rated current, 3-pole configuration and 10 kA breaking capacity, the ABB S203M-Z1 provides robust circuit protection in a slim DIN rail mounted format. Its current limiting design helps reduce fault energy, improving protection for downstream equipment and installation reliability.
Miniature circuit breakers such as the ABB S203M-Z1 protect circuits by disconnecting the supply when overload or short circuit conditions occur. The thermal mechanism responds to sustained overloads, while the magnetic mechanism reacts quickly to short circuit faults.
The Z curve characteristic provides fast response at lower fault current levels, making this MCB well suited for sensitive electronic equipment and control circuits. Its compact 3-pole design allows three-phase protection within electrical panels while maintaining space-efficient installation.
| Current | 1 A |
|---|---|
| Phase | Single Phase |
| Manufacturer | ABB |
| Series | System pro M compact S200M |
| Model | S203M-Z1 |
| Manufacturer Part Number | 2CDS273001R0218 |
| EAN | 4016779601061 |
| Product type | Miniature Circuit Breaker (MCB) |
| Rated current | 1 A |
| Number of poles | 3P |
| Tripping characteristic | Z |
| Rated operational voltage | 230 / 400 V AC |
| Frequency | 50 / 60 Hz |
| Breaking capacity | 10 kA |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2 |
| Protection rating | IP20 |
| Mounting type | DIN rail |
| Terminal type | Bi-directional cylinder-lift terminal |
| Mechanical endurance | 20,000 operating cycles |
| Dimensions (H × W × D) | approx. 88 × 52.5 × 69 mm |
| Weight | approx. 0.38 kg |
| HS Code | 85362010 |
| Country of Manufacture | Germany |
The ABB S203M-Z1 is used to protect electrical circuits against overloads and short circuits, particularly sensitive control and electronic circuits requiring fast tripping behaviour.
The S203M-Z1 has a 1 A rated current.
The Z curve provides fast magnetic tripping at low fault current levels, making it suitable for sensitive electronic equipment, control circuits and semiconductor protection.
The ABB S203M-Z1 is a 3-pole miniature circuit breaker, suitable for three-phase circuit protection.
The S203M-Z1 provides a 10 kA breaking capacity, supporting dependable short circuit protection in professional electrical installations.
ABB System pro M compact S200M miniature circuit breakers are trusted by panel builders, electrical contractors and automation engineers for reliable protection, compact installation and proven performance in demanding electrical systems.
● Service Agreements
Credit Accounts
Our service agreements are built to support long term procurement relationships. By working closely with engineering teams and procurement departments, we help streamline purchasing processes while ensuring consistent access to critical components and sourcing support when it matters most.
● frequently asked questions
At Led Controls Ltd we help engineers source the right automation and control gear with confidence. below are quick answers to what we are asked most often.
We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
● latest blog
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...