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.
