Why Choose the ABB S203M-Z2NA Miniature Circuit Breaker?
The ABB S203M-Z2NA is a precision miniature circuit breaker (MCB) designed to provide reliable overload and short-circuit protection for sensitive low-current electrical circuits. As part of the professional ABB System pro M compact S200M series, it offers dependable current-limiting protection for commercial, industrial and control panel applications.
This miniature circuit breaker features a Z curve tripping characteristic, making it suitable for circuits requiring rapid magnetic tripping and sensitive fault protection. It is commonly used for control circuits, measuring equipment, electronic loads and applications where low fault currents must be disconnected quickly.
With a rated current of 2 A, a 3+NP pole configuration and a breaking capacity of up to 10 kA at 230 / 400 V AC, the S203M-Z2NA is ideal for three-phase low-current protection where neutral switching is required. Its compact DIN rail format enables quick installation inside modular distribution boards and electrical control panels.
Key Advantages
- Reliable ABB miniature circuit breaker for sensitive circuit protection.
- 2 A rated current for low-current electrical circuits.
- Z curve tripping characteristic for fast short-circuit response.
- 3+NP configuration for three-phase systems requiring neutral switching.
- Current-limiting design helps protect cables and connected equipment.
- DIN rail mounting for fast installation in distribution boards and control panels.
Key Features
- ABB System pro M compact S200M series.
- 2 A rated current.
- Z curve tripping characteristic.
- 3+NP pole configuration.
- Up to 10 kA breaking capacity at 230 / 400 V AC.
- Delayed thermal tripping mechanism for overload protection.
- Electromechanical tripping mechanism for short-circuit protection.
- Compact modular design for DIN rail mounting.
Reliable Protection for Sensitive Low-Current Circuits
Miniature circuit breakers such as the ABB S203M-Z2NA automatically disconnect electrical circuits during overload or short-circuit conditions. This helps protect cables, control devices and connected loads while supporting safe and compliant electrical installation design.
The ABB S200M range is engineered for professional applications requiring compact dimensions, dependable operation and high breaking capacity. The Z curve characteristic makes this model particularly suitable for sensitive electrical circuits where rapid short-circuit disconnection is important.
Typical Applications
- Industrial control panels.
- Sensitive electronic circuit protection.
- Measuring and monitoring circuits.
- Low-current three-phase distribution circuits.
- Automation and machine control systems.
- Commercial switchboards and distribution boards.
