2CDS272445R0081 ABB S202MT-D8 MCB 10kA 2P Type D 8A

Why Choose the ABB S202MT-D8 Miniature Circuit Breaker?

The ABB S202MT-D8 is a robust 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 specialised ABB S200MT miniature circuit breaker series, it combines an 8 A rated current with a D tripping characteristic and a high 10 kA rated short-circuit breaking capacity.

Developed specifically for railway applications, the S202MT-D8 protects cables and conductors against overload and short-circuit conditions. Its D characteristic is particularly suited to circuits supplying equipment with high starting or inrush currents, while the S200MT construction is engineered to meet stringent requirements for fire behaviour, shock and vibration in rolling stock environments.

With a rated current of 8 A, a 2-pole configuration and 10 kA breaking capacity, the S202MT-D8 provides dependable protection for auxiliary, control and equipment circuits. Its compact DIN rail construction enables straightforward panel integration, while ABB order code 2CDS272445R0081 identifies this specific D-characteristic 8 A version.

Key Advantages

• Specialised miniature circuit breaker for railway and traction applications.
• 8 A rated current with a 2-pole configuration.
• D tripping characteristic suited to equipment with high starting and inrush currents.
• 10 kA rated short-circuit breaking capacity for dependable fault protection.
• Designed to protect cables and conductors against overload and short circuit.
• Robust construction developed for demanding rolling stock and transportation environments.

Key Features

• ABB S200MT miniature circuit breaker series.
• 8 A rated current.
• 2-pole configuration.
• D tripping characteristic.
• 10 kA rated short-circuit breaking capacity according to EN 60898-1.
• 15 kA ultimate short-circuit breaking capacity according to IEC 60947-2 at 230 / 400 V AC.
• Designed specifically for demanding railway and traction environments.
• Railway fire protection classification R26 / HL3 according to EN 45545.
• Shock and vibration classification Category 1, Class A/B according to IEC 61373.

Reliable Circuit Protection for Railway and Traction Systems

Miniature circuit breakers such as the ABB S202MT-D8 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 railway applications and combines high short-circuit performance with construction suited to demanding rolling stock environments. The D characteristic accommodates substantial temporary starting currents, making the S202MT-D8 particularly suitable for circuits supplying equipment with high inrush currents while maintaining effective overload and short-circuit protection.

Typical Applications

• Railway and rolling stock electrical systems.
• Traction electrical installations.
• Control and auxiliary circuits.
• Equipment with high starting or inrush currents.
• Industrial control panels and switchgear.
• Transportation and automation electrical systems.