ABB S203P-Z8NA miniature circuit breaker from the S200P System pro M compact range, 3+NP configuration, Z curve, 8 A rated current, designed for sensitive overload and short-circuit protection in electrical distribution systems.
The ABB S203P-Z8NA is a high-performance miniature circuit breaker (MCB) from the ABB System pro M compact S200P series, designed to provide reliable overload and short-circuit protection in low-voltage electrical installations. With its Z-curve tripping characteristic and 8 A rated current, it is particularly suited to circuits requiring fast magnetic tripping, including sensitive electronic equipment, semiconductor devices and control circuits.
This ABB MCB features a 3+NP pole configuration, providing three protected poles with a neutral pole arrangement for three-phase plus neutral systems. The S200P range is current limiting and uses both thermal and electromagnetic tripping mechanisms to help protect cables, components and connected equipment.
With compact DIN rail mounting and robust modular construction, the S203P-Z8NA is ideal for professional distribution boards, control panels and industrial enclosures. It is also recognised under the manufacturer part number 2CDS283103R0408.
Miniature circuit breakers such as the ABB S203P-Z8NA help protect electrical circuits by automatically disconnecting the supply during overload or short-circuit conditions. The thermal trip responds to sustained overloads, while the electromagnetic trip provides rapid response to short-circuit faults.
The Z-curve characteristic is designed for applications where sensitive protection is required and lower magnetic trip thresholds are preferred. This makes the S203P-Z8NA suitable for electronic circuits, control systems, measurement equipment and other installations where rapid fault disconnection is important.
| Current | 8 A |
|---|---|
| Phase | Three Phase |
| Manufacturer | ABB |
| Series | S200P System pro M Compact |
| Model | S203P-Z8NA |
| Manufacturer part number | 2CDS283103R0408 |
| Product type | Miniature circuit breaker |
| Rated current | 8 A |
| Tripping characteristic | Z curve |
| Number of poles | 3+NP |
| Number of protected poles | 3 |
| Rated operational voltage | 400 V AC |
| Frequency | 50 / 60 Hz |
| Breaking capacity | up to 25 kA at 230 / 400 V AC |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2, UL 1077, CSA 22.2 No. 235 |
| Mounting type | DIN rail mounting |
| Protection rating | IP20 |
| Dimensions (H × W × D) | approx. 88 × 70 × 69 mm |
| Weight | approx. 0.56 kg |
| EAN | 4016779594288 |
The ABB S203P-Z8NA is used to protect three-phase plus neutral electrical circuits against overloads and short circuits, especially where sensitive protection is required.
The S203P-Z8NA has a rated current of 8 A.
A Z-curve MCB is designed to trip quickly at lower fault current levels, making it suitable for sensitive electronic circuits, control equipment and semiconductor protection.
The S203P-Z8NA has a 3+NP pole configuration, providing three protected poles plus a neutral pole arrangement.
This MCB is typically installed on a DIN rail inside electrical distribution boards, switchgear assemblies, control panels and industrial enclosures.
ABB S200P miniature circuit breakers are widely used by electricians, panel builders and industrial engineers for dependable circuit protection, robust construction and professional electrical distribution performance.
● 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...