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ABB S203-Z20 MCB – S200 – 3P – Z – 20A
ABB S203-Z20 three-pole 20 A Z curve miniature circuit breaker from the System pro M Compact S200 range for protecting sensitive electrical and electronic circuits against overloads and short circuits.
£74.95
Why Choose the ABB S203-Z20 Miniature Circuit Breaker?
The ABB S203-Z20 is a premium three-pole miniature circuit breaker (MCB) from the proven ABB System pro M Compact S200 series. Designed to provide dependable protection against overloads and short circuits, it is ideally suited to industrial automation, control panels and sensitive electronic equipment where fast fault protection is required.
Featuring a Z tripping characteristic, the S203-Z20 is specifically engineered for applications requiring rapid magnetic tripping, making it ideal for protecting PLCs, instrumentation, semiconductor devices and other sensitive electronic circuits. Its precision thermal and magnetic tripping mechanisms deliver reliable protection while reducing the risk of damage during fault conditions.
With a 20 A rated current, three protected poles and a 6 kA breaking capacity, the ABB S203-Z20 provides compact, reliable circuit protection for commercial, industrial and OEM electrical installations while remaining fully compatible with ABB System pro M Compact accessories.
Key Advantages
- High quality three-pole miniature circuit breaker.
- 20 A rated current with Z tripping characteristic.
- Fast magnetic tripping for sensitive electronic equipment.
- 6 kA breaking capacity for dependable circuit protection.
- Thermal overload and magnetic short circuit protection.
- Compatible with ABB System pro M Compact accessories.
Key Features
- ABB System pro M Compact S200 series.
- 20 A rated current.
- Z tripping characteristic.
- Three-pole (3P) configuration.
- 6 kA rated short circuit breaking capacity.
- Current limiting construction.
- DIN rail mounting.
- Failsafe bi-directional cylinder-lift screw terminals.
Reliable Protection for Sensitive Electronic Circuits
The ABB S203-Z20 automatically disconnects electrical circuits during overload and short circuit conditions, helping to protect valuable electronic equipment and minimise downtime. Its Z characteristic provides rapid magnetic tripping, making it particularly suitable for sensitive automation and control systems.
Manufactured to recognised international standards, the S203-Z20 delivers dependable long-term performance, excellent electrical endurance and straightforward installation within modern electrical distribution boards and industrial control panels.
Typical Applications
- PLC and automation systems.
- Industrial control panels.
- Instrumentation circuits.
- Semiconductor equipment.
- Electronic control systems.
- Commercial and industrial electrical installations.
Technical Specifications
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| Phase | Three Phase | |
|---|---|---|
| Current | 20 A | |
| Poles | 3-pole | |
| Device Type | MCB | |
| Trip Curve | Z curve | |
| Breaking Capacity | 6 kA | |
| Manufacturer | ABB | |
| Series | System pro M Compact S200 | |
| Model | S203-Z20 | |
| Manufacturer Part Number | 2CDS253001R0488 | |
| Product type | Miniature circuit breaker (MCB) | |
| Rated current | 20 A | |
| Number of poles | 3P | |
| Tripping characteristic | Z | |
| Rated operational voltage | Up to 440 V AC | |
| Rated frequency | 50 / 60 Hz | |
| Rated short circuit breaking capacity | 6 kA | |
| Protection rating | IP20 | |
| Mounting type | DIN rail | |
| Dimensions (H × W × D) | 88 × 52.5 × 69 mm | |
| Weight | Approx. 0.345 kg | |
| HS Code | 85362010 | |
| Country of Manufacture | Germany |
Frequently Asked Questions
What is the ABB S203-Z20 used for?
The ABB S203-Z20 protects three-phase electrical circuits against overloads and short circuits, particularly where sensitive electronic equipment requires rapid fault protection.
What does the Z tripping characteristic mean?
The Z characteristic provides fast magnetic tripping, making it suitable for protecting PLCs, instrumentation and sensitive electronic equipment.
How many poles does this circuit breaker have?
The ABB S203-Z20 is a three-pole (3P) miniature circuit breaker.
What is the rated current?
This miniature circuit breaker has a 20 A rated current.
How is the ABB S203-Z20 installed?
The breaker is designed for installation onto a standard DIN rail inside electrical distribution boards and industrial control panels.
Trusted by Electrical Professionals Worldwide
ABB System pro M Compact miniature circuit breakers are trusted worldwide by panel builders, OEMs and electrical engineers for dependable circuit protection, outstanding reliability and long operational life.
