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ABB S203-Z3NA MCB – S200 – 3P+N – Z – 3A
ABB S203-Z3NA System pro M Compact miniature circuit breaker with 3P+N configuration, 3 A rated current, Z tripping characteristic and 6 kA breaking capacity for sensitive industrial and electronic circuit protection.
£117.52
Why Choose the ABB S203-Z3NA Miniature Circuit Breaker?
The ABB S203-Z3NA is a premium 3P+N miniature circuit breaker (MCB) from the trusted ABB System pro M Compact S200 series, designed to provide reliable overload and short circuit protection for sensitive industrial, commercial and OEM electrical installations. Featuring a Z tripping characteristic, this breaker is specifically engineered for applications requiring extremely fast magnetic tripping, making it ideal for semiconductor devices, PLC systems, instrumentation and other sensitive electronic equipment.
Manufactured using ABB's advanced thermal and electromagnetic trip technology, the S203-Z3NA delivers dependable circuit protection with excellent current limiting performance. Its compact DIN rail mounted design enables straightforward installation within switchboards, control panels and automation systems while remaining fully compatible with ABB's range of S200 accessories.
With a 3 A rated current, 3P+N configuration and a 6 kA breaking capacity, the ABB S203-Z3NA provides dependable protection for three-phase electrical systems requiring a switched neutral, particularly where sensitive electronic equipment requires rapid fault clearance.
Key Advantages
- 3P+N miniature circuit breaker for three-phase systems with switched neutral.
- 3 A rated current for specialised low-current applications.
- Z characteristic trip curve for highly sensitive electronic equipment.
- 6 kA breaking capacity for dependable short circuit protection.
- Compact DIN rail mounting for quick installation.
- Compatible with ABB S200 series accessories for enhanced system flexibility.
Key Features
- ABB System pro M Compact S200 series.
- Model: S203-Z3NA.
- Rated current: 3 A.
- 3P+N pole configuration.
- Z tripping characteristic.
- 6 kA rated short circuit capacity.
- Thermal overload and electromagnetic short circuit protection.
- Current limiting design.
- DIN rail mounting.
Reliable Protection for Sensitive Electronic Systems
The ABB S203-Z3NA automatically disconnects electrical circuits during overload and short circuit conditions, helping protect wiring, electronic equipment and sensitive control systems from damage while maintaining operational reliability.
Its Z characteristic provides a very fast magnetic trip response, making it particularly suitable for semiconductor protection, PLC systems, instrumentation, electronic controls and other applications where low fault currents must be cleared rapidly.
Typical Applications
- PLC and automation systems.
- Electronic control panels.
- Semiconductor protection.
- Instrumentation equipment.
- OEM machinery.
- Industrial control systems.
Technical Specifications
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| Phase | Three Phase | |
|---|---|---|
| Current | 3 A | |
| Poles | 3-pole + N | |
| Device Type | MCB | |
| Trip Curve | Z curve | |
| Breaking Capacity | 6 kA | |
| Manufacturer | ABB | |
| Series | System pro M Compact S200 | |
| Model | S203-Z3NA | |
| Product ID | 2CDS253103R0318 | |
| Product type | Miniature Circuit Breaker (MCB) | |
| Rated current | 3 A | |
| Tripping characteristic | Z | |
| Number of poles | 3P+N | |
| Rated operational voltage | 400 V AC | |
| Maximum operational voltage | 440 V AC | |
| Rated frequency | 50 / 60 Hz | |
| Rated short circuit capacity | 6 kA | |
| Energy limiting class | 3 | |
| Mounting type | DIN rail | |
| Dimensions (H × W × D) | 88 × 70 × 69 mm | |
| Weight | Approx. 0.52 kg | |
| Protection rating | IP20 (IP40 when installed in a suitable enclosure) | |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2, UL 1077 | |
| HS Code | 85362010 | |
| Country of Manufacture | Germany |
Frequently Asked Questions
What is the ABB S203-Z3NA used for?
The ABB S203-Z3NA protects sensitive three-phase electrical circuits with a neutral against overloads and short circuits.
What does the Z trip characteristic mean?
The Z characteristic provides very fast magnetic tripping, making it ideal for protecting semiconductor devices, PLC systems and sensitive electronic equipment.
What is the rated current of this breaker?
This miniature circuit breaker has a 3 A rated current.
How is the S203-Z3NA installed?
The breaker mounts directly onto a standard 35 mm DIN rail inside switchboards, distribution boards and industrial control panels.
Can ABB accessories be fitted?
Yes. The ABB S200 range supports auxiliary contacts, shunt trips, undervoltage releases, signalling devices and other compatible accessories.
Trusted by Electrical Professionals Worldwide
ABB System pro M Compact miniature circuit breakers are trusted by panel builders, automation engineers and industrial electricians for reliable circuit protection, high performance and long operational life.
