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ABB S203-Z4 MCB – S200 – 3P – Z – 4A
ABB S203-Z4 miniature circuit breaker, a 3-pole 4 A Z curve MCB from the System pro M compact S200 range with 6 kA breaking capacity for commercial, industrial and control panel circuit protection.
£95.62
Why Choose the ABB S203-Z4 Miniature Circuit Breaker?
The ABB S203-Z4 is a compact and reliable 3-pole 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 commercial, industrial and control panel installations.
With a Z tripping characteristic, the S203-Z4 is designed for circuits requiring fast magnetic tripping at low fault current levels. This makes it suitable for selected control circuits, sensitive loads and specialist electrical systems where rapid disconnection is important.
Rated at 4 A with a 3-pole configuration and 6 kA short-circuit breaking capacity, the ABB S203-Z4 provides effective protection for three-phase low-current circuits. Its DIN rail mounting design enables straightforward installation in distribution boards, machine panels and electrical enclosures.
Key Advantages
- 3-pole miniature circuit breaker for three-phase circuit protection.
- 4 A rated current suitable for low-current power and control circuits.
- Z curve tripping characteristic for fast response to lower fault currents.
- 6 kA breaking capacity for reliable short-circuit protection.
- Part of the ABB System pro M compact S200 range.
- DIN rail mounting for efficient panel and board installation.
Key Features
- ABB S203-Z4 miniature circuit breaker.
- S200 series modular protection device.
- 3 protected poles.
- 4 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 Low-Current Three-Phase Circuits
Miniature circuit breakers such as the ABB S203-Z4 automatically disconnect a circuit when excessive current is detected. The 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-Z4 suitable for selected sensitive circuits, control systems and specialist equipment where fast disconnection helps protect connected devices and wiring.
Typical Applications
- Three-phase control circuits.
- Industrial automation panels.
- Sensitive electrical load protection.
- Machine building and OEM equipment.
- Commercial and industrial distribution boards.
- Low-current auxiliary and power circuits.
Technical Specifications
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| Phase | Three Phase | |
|---|---|---|
| Current | 4 A | |
| Poles | 3-pole | |
| Device Type | MCB | |
| Trip Curve | Z curve | |
| Breaking Capacity | 6 kA | |
| Manufacturer | ABB | |
| Series | S200 | |
| Model | S203-Z4 | |
| Product ID | 2CDS253001R0338 | |
| EAN | 4016779531023 | |
| Product type | Miniature circuit breaker | |
| Number of poles | 3P | |
| Protected poles | 3 | |
| Rated current | 4 A | |
| Tripping characteristic | Z curve | |
| Rated short-circuit capacity | 6 kA | |
| Rated operational voltage | 400 V AC | |
| Maximum operational voltage | 440 V AC | |
| Rated insulation voltage | 440 V | |
| Rated impulse withstand voltage | 4 kV | |
| Rated frequency | 50 / 60 Hz | |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2, UL 1077 | |
| Mounting type | DIN rail | |
| Terminal type | Screw terminals | |
| Dimensions (H × W × D) | approx. 88 × 52.5 × 69 mm | |
| Weight | approx. 0.38 kg | |
| HS Code | 85362010 | |
| Country of Manufacture | Germany |
Frequently Asked Questions
What is the ABB S203-Z4 used for?
The ABB S203-Z4 is used to protect three-phase electrical circuits against overloads and short circuits in industrial, commercial and control panel applications.
What is the rated current of the ABB S203-Z4?
The S203-Z4 has a rated current of 4 A.
How many poles does the S203-Z4 have?
This miniature circuit breaker has a 3-pole configuration with three protected poles.
What does the Z curve mean on this breaker?
The Z curve tripping characteristic provides fast tripping at lower fault current levels, making it suitable for selected sensitive circuits and control applications.
Where is the ABB S203-Z4 typically installed?
It is typically installed on a DIN rail inside distribution boards, control panels, machine cabinets or industrial electrical enclosures.
Trusted by Electrical Engineers Worldwide
ABB System pro M compact S200 miniature circuit breakers are trusted by electrical contractors, panel builders and engineers for reliable modular circuit protection across commercial and industrial installations.
