Why Choose the ABB S201-D25 Miniature Circuit Breaker?
The ABB S201-D25 is a high-quality single-pole miniature circuit breaker (MCB) designed to protect electrical circuits against overloads and short circuits. Part of the established ABB System pro M Compact S200 series, this current-limiting circuit breaker provides dependable protection for residential, commercial and industrial electrical installations.
The S201-D25 incorporates two complementary tripping mechanisms. A delayed thermal mechanism provides overload protection, while an electromechanical mechanism responds rapidly to short-circuit faults. This combination helps protect cables, connected equipment and electrical systems while supporting safe and reliable long-term operation.
With a 25 A rated current, a D curve tripping characteristic and a 6 kA rated breaking capacity according to IEC/EN 60898-1, the ABB S201-D25 is particularly suitable for circuits with high temporary starting currents. Typical loads include motors, transformers, solenoids, power supplies and industrial machinery.
Key Advantages
- Reliable overload and short-circuit protection.
- 25 A rated current for commercial and industrial circuits.
- D curve tripping characteristic suitable for high-inrush loads.
- 6 kA rated short-circuit capacity according to IEC/EN 60898-1.
- Compact single-module design helps conserve distribution board space.
- Compatible with ABB System pro M Compact auxiliary contacts and accessories.
Key Features
- ABB System pro M Compact S200 series.
- 25 A rated current.
- Single-pole (1P) configuration.
- D tripping characteristic.
- 6 kA breaking capacity at 230/400 V AC according to IEC/EN 60898-1.
- Delayed thermal overload tripping mechanism.
- Electromechanical short-circuit tripping mechanism.
- Standard 35 mm DIN rail mounting.
Reliable Protection for High-Inrush Loads
The ABB S201-D25 automatically disconnects an electrical circuit when excessive current is detected. Its thermal tripping mechanism responds to sustained overload conditions, while the electromagnetic mechanism provides rapid protection against short-circuit currents.
The D curve characteristic allows the circuit breaker to tolerate higher temporary starting currents than B or C curve devices. This makes the S201-D25 suitable for correctly designed circuits supplying motors, transformers and electromagnetic equipment that may produce significant inrush current during start-up.
Typical Applications
- Industrial control panels and switchboards.
- Electric motors with high starting currents.
- Transformers and industrial power supplies.
- Solenoids and electromagnetic equipment.
- Commercial and industrial distribution boards.
- OEM machinery and automation systems.
