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ABB S203M-Z63NA MCB – S200M – 3P+N – Z – 63A
ABB S203M-Z63NA three-pole 63 A Z curve miniature circuit breaker from the System pro M Compact S200M range for industrial and commercial circuit protection.
£135.86
Why Choose the ABB S203M-Z63NA Miniature Circuit Breaker?
The ABB S203M-Z63NA is a high performance three-pole miniature circuit breaker (MCB) from the trusted ABB System pro M Compact S200M series. Designed to provide dependable overload and short circuit protection, it is suitable for industrial, commercial and specialist electrical installations requiring a Z characteristic trip curve for highly sensitive loads.
The S200M range combines excellent protection with compact dimensions, making it ideal for modern distribution boards and control panels. Featuring thermal and magnetic tripping mechanisms, the S203M-Z63NA delivers reliable circuit protection while helping maximise system uptime and equipment safety.
With a 63 A rated current, three protected poles and a 10 kA breaking capacity, this miniature circuit breaker is engineered for demanding applications where precise protection of electronic equipment and specialised circuits is essential.
Key Advantages
- High quality three-pole miniature circuit breaker for industrial installations.
- 63 A rated current for higher load applications.
- Z characteristic provides fast magnetic tripping for sensitive equipment.
- 10 kA breaking capacity for dependable fault protection.
- Thermal and magnetic trip mechanisms for comprehensive circuit protection.
- DIN rail mounting for fast installation within distribution boards and control panels.
Key Features
- ABB System pro M Compact S200M series.
- 63 A current rating.
- Three-pole (3P) configuration.
- Z curve tripping characteristic.
- 10 kA rated breaking capacity.
- Suitable for AC and DC applications.
- DIN rail mounting.
- Compatible with ABB auxiliary and signalling accessories.
Reliable Protection for Critical Electrical Circuits
The ABB S203M-Z63NA protects electrical installations against overloads and short circuits using independent thermal and magnetic tripping mechanisms. Its fast acting Z characteristic makes it particularly suitable for protecting sensitive electronic equipment with low inrush current tolerance.
Designed for industrial and commercial electrical systems, the S200M range offers long mechanical life, high reliability and compatibility with ABB accessories, helping engineers build flexible and dependable control panels and distribution systems.
Typical Applications
- Industrial control panels.
- Automation systems.
- Sensitive electronic equipment.
- PLC and instrumentation circuits.
- Machine building and OEM equipment.
- Commercial electrical distribution boards.
Technical Specifications
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| Phase | Three Phase | |
|---|---|---|
| Poles | 3-pole + N | |
| Current | 63 A | |
| Device Type | MCB | |
| Trip Curve | Z curve | |
| Breaking Capacity | 10 kA | |
| Manufacturer | ABB | |
| Series | System pro M Compact S200M | |
| Model | S203M-Z63NA | |
| Product type | Miniature circuit breaker (MCB) | |
| Rated current | 63 A | |
| Number of poles | 3 | |
| Trip characteristic | Z | |
| Rated operational voltage | Up to 440 V AC | |
| Frequency | 50 / 60 Hz | |
| Breaking capacity | 10 kA | |
| Protection rating | IP20 | |
| Mounting type | DIN rail | |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2 | |
| Dimensions (H × W × D) | approx. 88 × 52.5 × 69 mm | |
| Weight | approx. 0.38 kg | |
| HS Code | 85362010 | |
| Country of Manufacture | Germany |
Frequently Asked Questions
What is the ABB S203M-Z63NA used for?
It provides overload and short circuit protection for three-phase electrical circuits in industrial, commercial and automation applications.
What does the Z trip characteristic mean?
The Z curve provides rapid magnetic tripping at low multiples of rated current, making it suitable for protecting sensitive electronic equipment.
What is the current rating?
The ABB S203M-Z63NA has a rated current of 63 A.
How is this miniature circuit breaker installed?
The device is designed for quick installation onto standard DIN mounting rails within electrical enclosures and distribution boards.
Which standards does this MCB comply with?
It complies with IEC/EN 60898-1 and IEC/EN 60947-2 for reliable circuit protection.
Trusted by Electrical Professionals Worldwide
ABB System pro M Compact miniature circuit breakers are trusted by panel builders, machine manufacturers and electrical contractors for delivering dependable circuit protection across demanding industrial and commercial applications.
