Why Choose the ABB S203-Z16NA Miniature Circuit Breaker?
The ABB S203-Z16NA is a reliable 3-pole plus neutral miniature circuit breaker (MCB) designed to protect electrical circuits against overloads and short circuits. Part of the ABB System pro M compact S200 range, it provides dependable modular protection for residential, commercial and industrial electrical installations.
With a Z tripping characteristic, the S203-Z16NA is designed for circuits requiring fast magnetic tripping at low fault current levels. This makes it suitable for selected sensitive loads, control circuits and specialist electrical systems where rapid disconnection is important.
Rated at 16 A with a 3P+N configuration and 6 kA short-circuit breaking capacity, the ABB S203-Z16NA provides effective protection for three-phase circuits with neutral switching. Its compact DIN rail mounting format enables straightforward installation in distribution boards, switchboards and control panels.
Key Advantages
- 3-pole plus neutral miniature circuit breaker for three-phase and neutral circuits.
- 16 A rated current suitable for control, power and distribution circuits.
- Z curve tripping characteristic for fast response to lower fault currents.
- 6 kA breaking capacity for dependable short-circuit protection.
- Part of the ABB System pro M compact S200 range.
- DIN rail mounting for efficient installation in panels and distribution boards.
Key Features
- ABB S203-Z16NA miniature circuit breaker.
- S200 series modular protection device.
- 3 protected poles plus neutral.
- 16 A rated current.
- Z characteristic trip curve.
- 6 kA rated short-circuit capacity.
- Thermal-magnetic tripping for overload and short-circuit protection.
- Compatible with ABB System pro M compact accessories.
Fast Acting Protection for Three-Phase and Neutral Circuits
Miniature circuit breakers such as the ABB S203-Z16NA automatically disconnect electrical circuits when excessive current is detected. The delayed thermal tripping mechanism provides overload protection, while the electromechanical tripping mechanism responds quickly to short-circuit faults.
The Z curve characteristic provides rapid magnetic tripping at lower fault current levels. This makes the S203-Z16NA suitable for selected sensitive circuits, control systems and specialist equipment where fast disconnection helps protect connected devices and wiring.
Typical Applications
- Three-phase distribution boards with neutral switching.
- Industrial automation and control panels.
- Sensitive electrical load protection.
- Commercial and industrial electrical installations.
- Machine building and OEM electrical assemblies.
- Building services and specialist distribution systems.
