ABB S203-Z8NA miniature circuit breaker with 8 A rating, Z trip characteristic and 3 protected poles plus neutral for sensitive industrial and commercial electrical circuits.
£213.67
The ABB S203-Z8NA is a high-performance 3-pole + neutral miniature circuit breaker (MCB) from the trusted ABB System pro M compact S200 series. Designed to provide dependable overload and short circuit protection, it is ideal for industrial control panels, automation systems and specialist electronic equipment that requires highly sensitive circuit protection.
Featuring a Z trip characteristic, the S203-Z8NA is specifically designed for circuits with very low inrush currents, making it particularly suitable for protecting sensitive electronic devices, PLCs, measurement equipment and semiconductor circuits. Its current limiting technology helps minimise fault energy, improving equipment protection and overall system reliability.
With an 8 A rated current, 3 protected poles plus neutral and DIN rail mounting, the ABB S203-Z8NA delivers reliable protection while remaining fully compatible with ABB accessories including auxiliary contacts, shunt trips and undervoltage releases.
The ABB S203-Z8NA combines thermal overload protection with instantaneous magnetic short circuit protection to safeguard sensitive electrical equipment. The Z tripping characteristic provides rapid operation at relatively low fault currents, making it particularly suitable for protecting electronic control systems and semiconductor devices.
As part of ABB's proven System pro M compact range, this miniature circuit breaker delivers dependable performance, straightforward installation and long service life across industrial, commercial and OEM electrical installations.
| Current | 8 A |
|---|---|
| Phase | Single Phase |
| Manufacturer | ABB |
| Series | System pro M compact S200 |
| Model | S203-Z8NA |
| Product type | Miniature circuit breaker |
| Rated current | 8 A |
| Tripping characteristic | Z |
| Poles | 3 protected poles + neutral |
| Rated operational voltage | Up to 440 V AC |
| Frequency | 50 / 60 Hz |
| Breaking capacity | 6 kA (IEC/EN 60898-1) |
| Protection | Thermal magnetic |
| Mounting type | DIN rail |
| Terminal type | Screw terminals |
| Protection rating | IP20 |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2, UL1077 |
| HS Code | 85362010 |
| Country of Manufacture | Germany |
The ABB S203-Z8NA provides overload and short circuit protection for sensitive electronic equipment, automation systems and industrial control circuits.
The Z characteristic is designed for circuits with very low inrush currents, providing rapid protection for sensitive electronic devices and semiconductor equipment.
The S203-Z8NA features 3 protected poles plus a neutral pole, making it suitable for three-phase systems with neutral.
Yes. The ABB S203-Z8NA is designed for secure installation on standard DIN rails used in electrical distribution and control panels.
Yes. It is compatible with ABB auxiliary contacts, shunt trips, undervoltage releases and other System pro M compact accessories.
ABB System pro M compact miniature circuit breakers are trusted by electrical engineers, machine builders and panel manufacturers for dependable circuit protection, high product quality and long-term reliability.
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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...