Why Choose the ABB S203-Z0.5NA Miniature Circuit Breaker?
The ABB S203-Z0.5NA is a premium three-pole plus switched neutral (3P+N) miniature circuit breaker (MCB) from the trusted ABB System pro M Compact S200 series. Designed to provide dependable overload and short circuit protection, it is ideal for industrial control systems, instrumentation circuits and highly sensitive electronic equipment requiring precise fault protection.
Featuring a Z curve tripping characteristic and a 0.5 A rated current, the S203-Z0.5NA is specifically developed for protecting sensitive electronic devices and semiconductor circuits where rapid fault disconnection is essential. Its advanced current limiting technology helps reduce fault energy whilst protecting valuable equipment and improving overall system reliability.
Manufactured to ABB's exacting quality standards, the S203-Z0.5NA offers excellent mechanical durability, dependable switching performance and compatibility with ABB's comprehensive range of System pro M Compact accessories, making it an ideal solution for demanding industrial and commercial electrical installations.
Key Advantages
- Reliable 3P+N miniature circuit breaker for sensitive electrical installations.
- 0.5 A rated current with Z curve tripping characteristic.
- 6 kA breaking capacity for dependable circuit protection.
- Protects against overloads and short circuits.
- Switched neutral provides additional installation flexibility.
- Compatible with ABB auxiliary contacts and signalling accessories.
Key Features
- ABB System pro M Compact S200 series.
- 0.5 A rated current.
- Z characteristic trip curve.
- Three protected poles plus switched neutral (3P+N).
- 6 kA rated short circuit breaking capacity.
- DIN rail mounting.
- Thermal overload and magnetic short circuit protection.
- Failsafe bi-directional cylinder-lift terminals.
Reliable Protection for Sensitive Electronic Equipment
The ABB S203-Z0.5NA combines thermal overload protection with an extremely sensitive magnetic short circuit trip to safeguard delicate electronic circuits. Its Z curve characteristic enables rapid disconnection under low fault currents, making it particularly suitable for semiconductor devices, PLC systems and instrumentation equipment.
The integrated switched neutral enables simultaneous switching of the neutral conductor alongside the three live phases, making this breaker suitable for industrial control panels, automation systems and specialist electrical installations.
Typical Applications
- Industrial control panels.
- PLC and automation systems.
- Instrumentation circuits.
- Semiconductor equipment.
- Electronic control systems.
- Three-phase distribution systems with switched neutral.
