Why Choose the ABB S203M-Z63 Miniature Circuit Breaker?
The ABB S203M-Z63 is a high performance three-pole miniature circuit breaker (MCB) designed to provide dependable overload and short-circuit protection in industrial, commercial and panel building applications. As part of the ABB S200M System pro M compact series, it delivers reliable circuit protection in a compact DIN rail mounted format.
This MCB features a Z tripping characteristic, making it ideal for highly sensitive electrical and electronic circuits where rapid magnetic tripping is required. It is particularly suited to PLC systems, instrumentation, electronic control circuits and automation equipment with low inrush currents. Its current limiting design helps reduce fault energy, protecting connected equipment and wiring from electrical faults.
With a 63 A rated current, three-pole configuration and 10 kA short-circuit breaking capacity, the ABB S203M-Z63 provides dependable protection for three-phase distribution systems, industrial control panels and sensitive automation installations.
Key Advantages
- Compact three-pole miniature circuit breaker for professional installations.
- 63 A rated current for higher current circuit protection.
- Z tripping characteristic for sensitive electronic circuits.
- 10 kA short-circuit breaking capacity for demanding applications.
- Current limiting technology helps minimise fault energy.
- Compatible with ABB System pro M compact accessories.
Key Features
- ABB S200M miniature circuit breaker series.
- 63 A rated current.
- Three-pole (3P) configuration.
- Z characteristic thermal and magnetic tripping curve.
- 10 kA breaking capacity at 230 / 400 V AC.
- DIN rail mounting for fast panel installation.
- Failsafe bi-directional cylinder-lift screw terminals.
- Suitable for AC and DC applications.
Reliable Protection for Sensitive Electrical Systems
The ABB S203M-Z63 automatically disconnects electrical circuits during overload and short-circuit conditions, helping protect wiring, control equipment and connected devices from damage. Its advanced thermal and magnetic tripping mechanisms provide dependable protection while maintaining excellent operational reliability.
The Z characteristic is specifically intended for highly sensitive electronic circuits where fast magnetic tripping is required. This makes the S203M-Z63 particularly suitable for automation equipment, PLCs, instrumentation and precision control systems.
Typical Applications
- PLC and automation control panels.
- Electronic equipment protection.
- Instrumentation and measurement circuits.
- Industrial machinery.
- Control cabinets and switchboards.
- Commercial and industrial electrical distribution.
