2CDS272445R0251 ABB S202MT-D25 MCB 10kA 2P Type D 25A

Why Choose the ABB S202MT-D25 Miniature Circuit Breaker?

The ABB S202MT-D25 is a specialised 2-pole miniature circuit breaker (MCB) designed to provide reliable overload and short-circuit protection in demanding railway, traction and industrial electrical systems. As part of the ABB S200MT miniature circuit breaker series, it combines a 25 A rated current with a D tripping characteristic and a high 10 kA rated short-circuit breaking capacity.

Developed for demanding railway and transportation environments, the S202MT-D25 protects cables and conductors against overload and short-circuit conditions. Its D characteristic is particularly suitable for circuits supplying equipment with high starting or inrush currents, including motors, transformers and other inductive loads.

With a rated current of 25 A, a 2-pole configuration and 10 kA breaking capacity, the S202MT-D25 provides robust circuit protection in a compact DIN rail format. ABB order code 2CDS272445R0251 identifies this specific D-characteristic 25 A version within the S200MT traction range.

Key Advantages

• Specialised miniature circuit breaker for railway and traction applications.
• 25 A rated current with a 2-pole configuration.
• D tripping characteristic suited to circuits with high starting and inrush currents.
• 10 kA rated short-circuit breaking capacity for dependable fault protection.
• Both poles are protected for comprehensive circuit protection.
• Robust construction developed for demanding rolling stock and transportation environments.

Key Features

• ABB S200MT miniature circuit breaker series.
• 25 A rated current.
• 2-pole configuration with both poles protected.
• D tripping characteristic.
• 10 kA rated short-circuit breaking capacity according to EN 60898-1 at 230 / 400 V AC.
• 15 kA ultimate short-circuit breaking capacity according to IEC 60947-2 at 230 / 400 V AC.
• 400 V AC rated voltage.
• 440 V rated insulation voltage.
• 4 kV rated impulse withstand voltage.
• Compact DIN rail construction for straightforward panel integration.

Reliable Circuit Protection for Railway and Traction Systems

Miniature circuit breakers such as the ABB S202MT-D25 automatically disconnect an electrical circuit when excessive current occurs because of an overload or short circuit. This helps protect cables, conductors and connected electrical equipment while allowing the circuit breaker to be reset after the electrical fault has been identified and corrected.

The ABB S200MT range is specifically developed for demanding railway applications and combines high short-circuit performance with construction suited to rolling stock environments. The D characteristic accommodates substantial temporary starting currents, making the S202MT-D25 particularly suitable for circuits supplying motors, transformers and other equipment with high inrush currents while maintaining effective overload and short-circuit protection.

Typical Applications

• Railway and rolling stock electrical systems.
• Traction electrical installations.
• Auxiliary and equipment circuits.
• Motor and transformer circuits with high starting currents.
• Industrial control panels and switchgear.
• Transportation and automation electrical systems.