Why Choose the ABB S203-Z3 Miniature Circuit Breaker?
The ABB S203-Z3 is a premium three-pole miniature circuit breaker (MCB) from the trusted ABB System pro M Compact S200 series. With a 3 A current rating and a Z tripping characteristic, it is specifically engineered to protect sensitive electrical and electronic circuits where rapid magnetic tripping is required. It provides dependable overload and short circuit protection for industrial automation, control panels, instrumentation and OEM machinery.
Manufactured to ABB's renowned quality standards, the S203-Z3 combines thermal overload protection with fast electromagnetic short circuit protection. Its compact DIN rail mounted design enables straightforward installation within electrical distribution boards and industrial control panels while ensuring reliable long-term performance.
Complying with internationally recognised standards, the ABB S203-Z3 is widely specified by machine builders, panel manufacturers and industrial engineers requiring reliable protection for low-current, high-sensitivity electrical circuits.
Key Advantages
- Three-pole miniature circuit breaker for three-phase installations.
- 3 A rated current for sensitive electrical circuits.
- Z tripping characteristic for rapid fault clearance.
- Reliable overload and short circuit protection.
- Compact DIN rail mounting for fast installation.
- Compatible with ABB System pro M Compact accessories.
Key Features
- ABB System pro M Compact S200 series.
- Model: S203-Z3.
- 3 A rated current.
- Three protected poles (3P).
- Z curve tripping characteristic.
- Thermal and electromagnetic trip mechanisms.
- 6 kA rated breaking capacity to IEC/EN 60898-1.
- DIN rail mounting for distribution boards and control panels.
Reliable Protection for Sensitive Electronic Circuits
The ABB S203-Z3 is designed to disconnect electrical circuits rapidly during overloads and short circuits. Its Z characteristic makes it particularly suitable for PLC systems, instrumentation, electronic control equipment and other applications where fast fault response is essential.
As part of ABB's proven System pro M Compact range, the S203-Z3 delivers excellent reliability, straightforward installation and compatibility with a comprehensive range of auxiliary contacts, shunt trips and signalling accessories.
Typical Applications
- PLC and automation systems.
- Industrial control panels.
- Instrumentation circuits.
- OEM machinery.
- Sensitive electronic equipment.
- Commercial and industrial electrical installations.
