ABB S203P-Z1NA System pro M compact miniature circuit breaker featuring a 3P+N configuration, 1 A rated current, Z tripping characteristic and 25 kA ultimate breaking capacity for sensitive industrial and commercial electrical circuits.
The ABB S203P-Z1NA is a premium 3P+N miniature circuit breaker (MCB) from the ABB System pro M compact S200P series, engineered to provide reliable overload and short circuit protection for sensitive electrical circuits. Designed for industrial, commercial and OEM installations, it delivers dependable performance where precision circuit protection is essential.
Featuring a Z tripping characteristic and a 1 A rated current, the S203P-Z1NA is specifically suited to protecting highly sensitive electronic equipment, control circuits and semiconductor devices. Its advanced current-limiting technology reduces the energy released during fault conditions, helping to minimise damage to connected equipment and electrical infrastructure.
With a 3P+N configuration and a 25 kA ultimate breaking capacity, this miniature circuit breaker combines compact DIN rail mounting with high-performance protection for demanding three-phase electrical installations. It is fully compatible with ABB's extensive range of modular accessories, allowing flexible panel design and future expansion.
The ABB S203P-Z1NA combines delayed thermal overload protection with rapid electromagnetic short circuit protection to safeguard sensitive electrical equipment. The Z characteristic provides very fast operation at relatively low fault currents, making it particularly suitable for protecting electronic devices and semiconductor-based equipment.
Designed for industrial automation, control systems and commercial electrical installations, the S203P-Z1NA offers reliable performance, compact installation and compatibility with ABB modular accessories, making it an excellent choice for professional panel builders and electrical engineers.
| Current | 1 A |
|---|---|
| Phase | Three Phase |
| Manufacturer | ABB |
| Series | System pro M compact S200P |
| Model | S203P-Z1NA |
| Product ID | 2CDS283103R0218 |
| Product type | Miniature Circuit Breaker (MCB) |
| Rated current | 1 A |
| Tripping characteristic | Z |
| Number of poles | 3P+N |
| Rated operational voltage | 400 V AC |
| Rated insulation voltage | 440 V |
| Frequency | 50 / 60 Hz |
| Ultimate short circuit breaking capacity (Icu) | 25 kA |
| Service breaking capacity (Ics) | 12.5 kA |
| Current limiting class | 3 |
| Protection rating | IP20 |
| Mounting type | DIN rail |
| Dimensions (H × W × D) | approx. 88 × 70 × 69 mm |
| Weight | approx. 0.56 kg |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2, UL 1077, CSA 22.2 No. 235 |
The S203P-Z1NA protects sensitive three-phase electrical circuits against overloads and short circuits, particularly where electronic equipment requires fast fault protection.
This miniature circuit breaker has a 1 A rated current.
A Z curve MCB is designed to provide rapid tripping at relatively low fault currents, making it suitable for protecting sensitive electronic devices, control systems and semiconductor equipment.
The S203P-Z1NA is a 3P+N device with three protected poles and a switched neutral.
Yes. The S200P range is compatible with ABB auxiliary contacts, shunt trips, undervoltage releases and other modular accessories.
ABB System pro M compact miniature circuit breakers are trusted by panel builders, machine manufacturers and industrial engineers for dependable circuit protection, high fault performance and long-term reliability in demanding electrical installations.
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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...