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ABB S203-D40 MCB – S200 – 3P – D – 40A
ABB S203-D40 miniature circuit breaker, a 3-pole 40 A D curve MCB from the System pro M compact S200 range with 6 kA breaking capacity for commercial, industrial and control panel circuit protection.
£44.96
Why Choose the ABB S203-D40 Miniature Circuit Breaker?
The ABB S203-D40 is a 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 residential, commercial and industrial electrical installations.
With a D tripping characteristic, the S203-D40 is designed for circuits with high inrush currents, making it suitable for selected motor circuits, transformers, power supplies and inductive loads. Its current-limiting design helps reduce fault energy and supports safe operation in demanding electrical systems.
Rated at 40 A with a 3-pole configuration and 6 kA short-circuit breaking capacity, the ABB S203-D40 provides robust protection for three-phase circuits. Its DIN rail mounting format enables straightforward installation in distribution boards, control panels and industrial electrical enclosures.
Key Advantages
- 3-pole miniature circuit breaker for three-phase circuit protection.
- 40 A rated current suitable for higher-load electrical circuits.
- D curve tripping characteristic for circuits with high inrush 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 installation in panels and distribution boards.
Key Features
- ABB S203-D40 miniature circuit breaker.
- S200 series modular protection device.
- 3 protected poles.
- 40 A rated current.
- D 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.
Reliable Protection for High Inrush Three-Phase Circuits
Miniature circuit breakers such as the ABB S203-D40 automatically disconnect the circuit when excessive current is detected. The delayed thermal tripping mechanism provides overload protection, while the electromechanical tripping mechanism responds rapidly to short-circuit faults.
The D curve characteristic is designed for applications where high temporary inrush currents may occur during normal operation. This makes the S203-D40 a practical choice for selected motor loads, transformers, power supplies and industrial equipment requiring dependable three-phase protection.
Typical Applications
- Three-phase distribution boards.
- Industrial control panels and switchboards.
- Motor circuits with high inrush current.
- Transformer and inductive load protection.
- Machine building and OEM equipment.
- Commercial and industrial low-voltage installations.
Technical Specifications
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| Phase | Three Phase | |
|---|---|---|
| Current | 40 A | |
| Poles | 3-pole | |
| Device Type | MCB | |
| Trip Curve | D curve | |
| Breaking Capacity | 6 kA | |
| Manufacturer | ABB | |
| Series | S200 | |
| Model | S203-D40 | |
| Product ID | 2CDS253001R0401 | |
| EAN | 4016779530965 | |
| Product type | Miniature circuit breaker | |
| Number of poles | 3P | |
| Protected poles | 3 | |
| Rated current | 40 A | |
| Tripping characteristic | D 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 | |
| Frequency | 50 / 60 Hz | |
| Protection rating | IP20 | |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2, UL 1077 | |
| Mounting type | DIN rail | |
| 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-D40 used for?
The ABB S203-D40 is used to protect three-phase electrical circuits against overloads and short circuits in commercial, industrial and control panel applications.
What is the rated current of the ABB S203-D40?
The S203-D40 has a rated current of 40 A.
How many poles does the S203-D40 have?
This miniature circuit breaker has a 3-pole configuration with three protected poles.
What does the D curve mean on this breaker?
The D curve tripping characteristic is designed for circuits with high inrush currents, making it suitable for selected motor, transformer and inductive load applications.
Where is the ABB S203-D40 typically installed?
It is typically installed on a DIN rail inside distribution boards, control panels, switchboards 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 residential, commercial and industrial installations.
