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ABB S203-Z10NA MCB – S200 – 3P+N – Z – 10A
ABB S203-Z10NA miniature circuit breaker with 10 A rating, Z trip characteristic and 3 protected poles plus neutral for sensitive industrial and commercial electrical protection.
£100.40
Why Choose the ABB S203-Z10NA Miniature Circuit Breaker?
The ABB S203-Z10NA is a premium 3-pole + neutral miniature circuit breaker (MCB) from the trusted ABB System pro M compact S200 series. Engineered to provide dependable overload and short circuit protection, it is ideal for industrial control panels, automation systems, instrumentation and electronic equipment requiring highly sensitive circuit protection.
Featuring a Z trip characteristic, the S203-Z10NA is specifically designed for circuits with very low inrush currents, making it suitable for protecting PLCs, electronic control systems, semiconductor devices and precision instrumentation. Its current limiting technology helps reduce fault energy, improving equipment protection while maintaining excellent system reliability.
With a 10 A rated current, 3 protected poles plus neutral and a compact DIN rail mounted design, the ABB S203-Z10NA provides straightforward installation and is fully compatible with ABB System pro M compact accessories including auxiliary contacts, shunt trips and undervoltage releases.
Key Advantages
- Reliable 3-pole + neutral miniature circuit breaker.
- 10 A rated current for industrial and commercial applications.
- Z trip characteristic for highly sensitive electronic circuits.
- Thermal and magnetic tripping mechanisms provide dependable protection.
- Current limiting design reduces fault energy.
- DIN rail mounting enables quick installation.
Key Features
- ABB System pro M compact S200 series.
- Model: S203-Z10NA.
- Rated current: 10 A.
- Configuration: 3 protected poles + neutral.
- Z tripping characteristic.
- Thermal overload and magnetic short circuit protection.
- Current limiting technology.
- DIN rail mounting.
- Failsafe bi-directional screw terminals.
- Compatible with ABB auxiliary contacts, shunt trips and undervoltage releases.
Reliable Protection for Sensitive Electrical Circuits
The ABB S203-Z10NA combines thermal overload protection with instantaneous magnetic short circuit protection to safeguard sensitive electrical equipment. The Z tripping characteristic provides rapid operation at relatively low fault currents, making it particularly suitable for electronic control systems, PLCs and semiconductor devices.
As part of ABB's proven System pro M compact range, the S203-Z10NA delivers dependable performance, straightforward installation and long service life across industrial, commercial and OEM electrical installations.
Typical Applications
- PLC and automation systems.
- Electronic control equipment.
- Instrumentation and measurement circuits.
- Industrial control panels.
- Semiconductor protection.
- OEM machinery and specialist electrical installations.
Technical Specifications
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| Phase | Three Phase | |
|---|---|---|
| Current | 10 A | |
| Poles | 3-pole + N | |
| Device Type | MCB | |
| Trip Curve | Z curve | |
| Breaking Capacity | 6 kA | |
| Manufacturer | ABB | |
| Series | System pro M compact S200 | |
| Model | S203-Z10NA | |
| Product type | Miniature circuit breaker | |
| Rated current | 10 A | |
| Tripping characteristic | Z | |
| Poles | 3 protected poles + neutral | |
| Rated operational voltage | Up to 440 V AC | |
| Maximum operating voltage (UL) | 480Y/277 V AC | |
| Rated frequency | 50 / 60 Hz | |
| Breaking capacity | 6 kA | |
| Energy limiting class | 3 | |
| Mounting type | DIN rail | |
| Terminal type | Failsafe bi-directional screw terminals | |
| Protection rating | IP20 (IP40 when installed in an enclosure) | |
| Dimensions (H × W × D) | 88 × 70 × 69 mm | |
| Weight | Approx. 0.52 kg | |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2, UL1077 | |
| HS Code | 85362010 | |
| Country of Manufacture | Germany |
Frequently Asked Questions
What is the ABB S203-Z10NA used for?
The ABB S203-Z10NA provides overload and short circuit protection for sensitive electronic equipment, automation systems and industrial control circuits.
What does the Z trip characteristic mean?
The Z characteristic is designed for circuits with very low inrush currents, providing rapid protection for sensitive electronic devices and semiconductor equipment.
How many poles does this circuit breaker have?
The S203-Z10NA features 3 protected poles plus a neutral pole for use on three-phase systems with a neutral conductor.
Can the breaker be mounted on a DIN rail?
Yes. The ABB S203-Z10NA is designed for installation on standard DIN rails used in control panels and distribution boards.
Is the S203-Z10NA compatible with ABB accessories?
Yes. It is compatible with ABB auxiliary contacts, shunt trips, undervoltage releases and other System pro M compact accessories.
Trusted by Electrical Professionals Worldwide
ABB System pro M compact miniature circuit breakers are trusted by electrical engineers, panel builders and OEM manufacturers for reliable circuit protection, outstanding build quality and long service life.
