ABB S203P-Z10 three-pole 10 A miniature circuit breaker with Z tripping characteristic for sensitive circuit protection in industrial and commercial electrical systems.
The ABB S203P-Z10 is a high performance three-pole miniature circuit breaker (MCB) from the trusted ABB System pro M compact S200P series. Designed for dependable overload and short circuit protection, it is ideal for industrial control panels, commercial distribution boards, OEM machinery and sensitive electrical circuits requiring fast fault response.
Featuring a Z tripping characteristic, the S203P-Z10 is especially suited to applications where rapid magnetic tripping is required for the protection of sensitive equipment. Its thermal and electromechanical trip mechanisms provide reliable overload and short circuit protection, helping to reduce downtime and protect connected electrical systems.
With a 10 A rated current, three-pole configuration and compact DIN rail mounted design, the ABB S203P-Z10 delivers reliable circuit protection in demanding industrial and commercial environments. The S200P range is engineered for high breaking capacity, current limiting performance and compatibility with ABB modular accessories.
Miniature circuit breakers such as the ABB S203P-Z10 protect electrical circuits by automatically disconnecting the supply when an overload or short circuit is detected. This helps protect cables, equipment and control systems from damage caused by excessive current.
The Z curve characteristic provides a fast magnetic response, making this breaker well suited to sensitive circuits, control equipment, electronic devices and applications where low fault current thresholds are important. Its compact format and accessory compatibility make it a practical choice for panel builders, machine builders and electrical engineers.
| Current | 10 A |
|---|---|
| Phase | Three Phase |
| Manufacturer | ABB |
| Series | System pro M compact S200P |
| Model | S203P-Z10 |
| Product type | Miniature circuit breaker (MCB) |
| Rated current | 10 A |
| Number of poles | 3 |
| Tripping characteristic | Z |
| Rated operational voltage | 480Y / 277 V AC |
| Frequency | 50 / 60 Hz |
| Breaking capacity | Up to 25 kA at 230 / 400 V AC |
| Terminal type | Screw terminals |
| Mounting type | DIN rail |
| Protection rating | IP20 terminals, IP40 when installed in an enclosure |
| Dimensions (H × W × D) | approx. 88 × 52.5 × 75.8 mm |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2, UL1077, CSA 22.2 No. 235 |
The S203P-Z10 is used to protect three-phase electrical circuits against overloads and short circuits in industrial, commercial and automation applications.
The Z curve provides fast magnetic tripping and is commonly used for sensitive circuits, control equipment and applications requiring rapid fault disconnection.
The ABB S203P-Z10 has a 10 A rated current.
This miniature circuit breaker has a three-pole configuration.
The S203P-Z10 is designed for DIN rail mounting inside electrical control panels, switchboards and distribution boards.
ABB System pro M compact miniature circuit breakers are trusted by panel builders, OEM manufacturers and electrical engineers worldwide for reliable circuit protection, high quality construction and long service life.
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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...