ABB S203M-Z1NA miniature circuit breaker from the System pro M compact S200M range featuring a 1 A rating, Z curve tripping characteristic, 3+NP configuration and up to 10 kA breaking capacity for sensitive low-current circuit protection.
£184.09
The ABB S203M-Z1NA is a precision miniature circuit breaker (MCB) designed to provide reliable overload and short-circuit protection for sensitive electrical circuits in commercial, industrial and control panel applications. As part of the professional ABB System pro M compact S200M series, it combines compact installation, dependable operation and high breaking capacity for modern electrical systems.
This miniature circuit breaker features a Z curve tripping characteristic, making it suitable for circuits requiring very fast magnetic tripping and protection of sensitive equipment. It is commonly used in control circuits, electronic loads, measuring circuits and installations where low fault currents must be disconnected quickly.
With a rated current of 1 A, a 3+NP pole configuration and a breaking capacity of up to 10 kA, the S203M-Z1NA is ideal for low-current three-phase applications requiring neutral switching. Its DIN rail mounting format allows straightforward installation inside distribution boards, switchboards and industrial control panels.
Miniature circuit breakers such as the ABB S203M-Z1NA automatically disconnect electrical circuits during overload or short-circuit conditions. This helps protect cables, control devices and connected equipment while supporting safe and compliant electrical installation design.
The ABB S200M range is engineered for professional installations requiring compact dimensions, reliable operation and high breaking capacity. The Z curve characteristic makes this model particularly suitable for sensitive low-current circuits where rapid disconnection is important.
| Current | 1 A |
|---|---|
| Phase | Single Phase |
| Manufacturer | ABB |
| Series | System pro M compact S200M |
| Model | S203M-Z1NA |
| Product type | Miniature circuit breaker |
| Product ID | 2CDS273103R0218 |
| EAN | 4016779601481 |
| Rated current | 1 A |
| Tripping characteristic | Z curve |
| Pole configuration | 3+NP |
| Rated operational voltage | 230 / 400 V AC |
| Rated insulation voltage | 440 V |
| Frequency | 50 / 60 Hz |
| Rated breaking capacity | up to 10 kA |
| Protection rating | IP20 |
| Current limiting class | 3 |
| Mounting type | DIN rail mounting |
| Dimensions (H × W × D) | approx. 88 × 70 × 69 mm |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2 |
| HS Code | 85362010 |
| Country of Manufacture | Germany |
The ABB S203M-Z1NA is used to protect low-current three-phase electrical circuits against overloads and short circuits, particularly where sensitive equipment requires fast fault disconnection.
This miniature circuit breaker has a rated current of 1 A.
A Z curve MCB provides very fast magnetic tripping, making it suitable for sensitive circuits and equipment that require rapid short-circuit protection.
The S203M-Z1NA provides three protected phase poles together with a neutral pole, making it suitable for three-phase systems requiring neutral switching.
It is designed for DIN rail installation inside distribution boards, switchboards and electrical control panels.
ABB System pro M compact miniature circuit breakers are trusted by electricians, panel builders and industrial engineers for reliable circuit protection, compact installation and long-term performance in professional 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...