The ABB S203 is a high-performance Miniature Circuit Breaker designed for the protection of low-voltage electrical installations against overloads and short circuits. This MCB is part of the System pro M compact® range, trusted worldwide for residential, commercial, and industrial applications.
Technical Specifications
| Rated Current | 4 A |
| Poles | 3P |
| Breaking Capacity | 6 kA |
| Trip Curve | D Curve |
| Manufacturer | ABB |
| SKU | ABBS203D4 |
| Series | S203 |
Key Features
- Complies with IEC/EN 60898-1 for household and similar installations
- Fast breaking time for superior short-circuit protection
- IP20 finger-safe terminals with captive screws
- Compatible with System pro M compact® auxiliary and signal contacts
- DIN rail mounting (TH35, 35mm)
- Mechanical endurance up to 20,000 operations
Typical Applications
Distribution boards, residential load centers, motor branch protection, lighting circuits, socket outlet circuits, commercial and industrial switchboards
Certifications & Compliance
IEC 60898-1, IEC 60947-2, CE, RoHS, RCM (Australia/NZ). Suitable for AS/NZS 3000 wiring rules installations.
