ABB S203-Z3 three-pole miniature circuit breaker with a 3 A current rating and Z tripping characteristic for protecting sensitive electrical and electronic circuits.
£173.86
The ABB S203-Z3 is a premium three-pole miniature circuit breaker (MCB) from the trusted ABB System pro M Compact S200 series. With a 3 A current rating and a Z tripping characteristic, it is specifically engineered to protect sensitive electrical and electronic circuits where rapid magnetic tripping is required. It provides dependable overload and short circuit protection for industrial automation, control panels, instrumentation and OEM machinery.
Manufactured to ABB's renowned quality standards, the S203-Z3 combines thermal overload protection with fast electromagnetic short circuit protection. Its compact DIN rail mounted design enables straightforward installation within electrical distribution boards and industrial control panels while ensuring reliable long-term performance.
Complying with internationally recognised standards, the ABB S203-Z3 is widely specified by machine builders, panel manufacturers and industrial engineers requiring reliable protection for low-current, high-sensitivity electrical circuits.
The ABB S203-Z3 is designed to disconnect electrical circuits rapidly during overloads and short circuits. Its Z characteristic makes it particularly suitable for PLC systems, instrumentation, electronic control equipment and other applications where fast fault response is essential.
As part of ABB's proven System pro M Compact range, the S203-Z3 delivers excellent reliability, straightforward installation and compatibility with a comprehensive range of auxiliary contacts, shunt trips and signalling accessories.
| Current | 3 A |
|---|---|
| Phase | Single Phase |
| Manufacturer | ABB |
| Series | System pro M Compact S200 |
| Model | S203-Z3 |
| Product ID | 2CDS253001R0318 |
| Product type | Miniature circuit breaker (MCB) |
| Rated current | 3 A |
| Number of poles | 3 |
| Tripping characteristic | Z |
| Rated operational voltage | Up to 440 V AC |
| Frequency | 50 / 60 Hz |
| Breaking capacity | 6 kA |
| Protection rating | IP20 |
| Mounting type | DIN rail |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2, UL 1077 |
| Dimensions (H × W × D) | Approx. 88 × 52.5 × 69 mm |
| Weight | Approx. 0.38 kg |
| HS Code | 85362010 |
| Country of Manufacture | Germany |
The ABB S203-Z3 protects sensitive three-phase electrical circuits against overloads and short circuits in industrial, commercial and OEM applications.
The Z curve provides very fast magnetic tripping, making it suitable for sensitive electronic equipment and low inrush current circuits.
This model is a three-pole (3P) miniature circuit breaker designed for three-phase electrical systems.
The ABB S203-Z3 clips directly onto a standard DIN rail within distribution boards, switchgear and industrial control panels.
The circuit breaker complies with IEC/EN 60898-1, IEC/EN 60947-2 and UL 1077 standards for dependable overcurrent protection.
ABB System pro M Compact miniature circuit breakers are trusted worldwide by electrical engineers, OEM machine builders and panel manufacturers for delivering dependable circuit protection across commercial and industrial applications.
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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...