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2CDS273061R0428 ABB S203M-Z10UC 10 A 3-Pole Type Z 10 kA Miniature Circuit Breaker
ABB S203M-Z10UC is a 10 A three-pole Type Z miniature circuit breaker with 10 kA short-circuit breaking capacity and a 400 V AC / 400 V DC rating for sensitive AC and DC circuit protection.
£278.72
Why Choose the ABB S203M-Z10UC Miniature Circuit Breaker?
The ABB S203M-Z10UC is a high-performance three-pole miniature circuit breaker (MCB) designed to provide reliable overload and short-circuit protection in AC and DC electrical systems. Part of the ABB System pro M compact® S200 M UC series, this universal-current circuit breaker combines flexible AC/DC operation with a high short-circuit breaking capacity for demanding industrial, control and traction-related applications.
With a rated current of 10 A, a Type Z tripping characteristic and three protected poles, the S203M-Z10UC is particularly suited to circuits containing sensitive electrical and electronic equipment. The Z characteristic provides a relatively low instantaneous magnetic trip threshold, helping protect loads where rapid response to overcurrent conditions is important.
The S203M-Z10UC has a rated voltage of 400 V AC / 400 V DC and a 10 kA short-circuit breaking capacity. Its modular DIN-rail format and compatibility with ABB System pro M compact® accessories make it a practical protection solution for industrial distribution boards, automation panels, machinery and AC/DC electrical systems.
Key Advantages
- Universal AC/DC miniature circuit breaker for flexible circuit protection.
- 10 A rated current for industrial, control and auxiliary circuits.
- Three-pole configuration provides simultaneous protection of three conductors.
- Type Z tripping characteristic for sensitive electrical and electronic loads.
- 10 kA short-circuit breaking capacity for robust fault protection.
- 400 V AC / 400 V DC rated voltage supports a broad range of installations.
- Compatible with the established ABB System pro M compact® accessory range.
Key Features
- ABB S200 M UC / System pro M compact® series.
- 10 A rated current.
- 3-pole configuration.
- Z-curve tripping characteristic.
- 10 kA short-circuit breaking capacity.
- 400 V AC / 400 V DC rated voltage.
- Designed for AC and DC applications.
- Complies with IEC/EN 60898 and IEC/EN 60947-2.
- Standard modular DIN-rail mounting.
- IP20 protection rating.
Sensitive AC and DC Circuit Protection
Miniature circuit breakers protect electrical circuits by automatically interrupting current when an overload or short-circuit condition occurs. The ABB S203M-Z10UC combines thermal overload protection with a sensitive Z-characteristic magnetic response, helping protect conductors and connected equipment against damaging overcurrent conditions.
The S200 M UC range is engineered for flexible AC and DC applications and combines high short-circuit breaking performance with modular installation. The Z characteristic makes the S203M-Z10UC particularly useful where sensitive equipment requires a rapid response to high overcurrents, while compatibility with System pro M compact® accessories simplifies integration into industrial electrical systems.
Typical Applications
- Industrial AC and DC control circuits.
- Sensitive electrical and electronic equipment.
- Machinery and automation control panels.
- Industrial electrical distribution systems.
- Power supply and auxiliary circuits.
- Railway and traction-related electrical systems.
- OEM machinery and automation equipment.
Technical Specifications
| Series | S200 M UC / System pro M compact® |
|---|---|
| ABB order code | 2CDS273061R0428 |
| Product type | Miniature circuit breaker (MCB) |
| Rated current | 10 A |
| Number of poles | 3 |
| Number of protected poles | 3 |
| Tripping characteristic | Type Z |
| Rated voltage | 400 V AC / 400 V DC |
| Short-circuit breaking capacity | 10 kA |
| Rated insulation voltage | 440 V |
| Rated impulse withstand voltage | 4 kV |
| Frequency | 50–60 Hz |
| Application | AC/DC circuit protection |
| Standards | IEC/EN 60898, IEC/EN 60947-2 |
| Mounting type | DIN rail |
| Protection rating | IP20 |
| Energy limiting class | 3 |
| Operating temperature | -25 to +55 °C |
| Electrical endurance | 20,000 cycles |
| Power loss | 6.66 W |
| Installation depth | 69 mm |
| Width | 3 modular units |
| Weight | approx. 0.375 kg |
| EAN | 4013614435645 |
Frequently Asked Questions
What is the ABB S203M-Z10UC used for?
The ABB S203M-Z10UC is a three-pole miniature circuit breaker designed to protect AC and DC electrical circuits against overload and short-circuit currents, particularly where a sensitive Type Z tripping characteristic is required.
What is the rated current of the S203M-Z10UC?
The S203M-Z10UC has a rated current of 10 A.
What tripping characteristic does this MCB use?
The S203M-Z10UC uses a Type Z tripping characteristic, providing sensitive magnetic protection for circuits and equipment requiring a relatively low instantaneous trip threshold.
What is the short-circuit breaking capacity?
The ABB S203M-Z10UC provides a 10 kA short-circuit breaking capacity for robust protection against high fault currents.
Can the ABB S203M-Z10UC be used for DC circuits?
Yes. The ABB S200 M UC series is designed for AC and DC applications, and the S203M-Z10UC has a rated voltage of 400 V AC / 400 V DC.
Trusted ABB Circuit Protection
ABB System pro M compact® miniature circuit breakers provide dependable circuit protection for industrial, automation and infrastructure applications, combining robust electrical performance with modular installation and flexible AC/DC operation.
