2CDS272447R0404 ABB S202MTR-C40 40A 2-Pole Type C 10kA Miniature Circuit Breaker

Why Choose the ABB S202MTR-C40 Miniature Circuit Breaker?

The ABB S202MTR-C40 is a specialised two-pole miniature circuit breaker (MCB) designed for dependable overload and short-circuit protection in railway, rolling stock and traction electrical systems. Part of the ABB S200 MTR series, this model combines a 40 A rated current, Type C tripping characteristic and 10 kA rated short-circuit capacity.

ABB's S200 MTR range is engineered for the protection and control of circuits against overloads and short circuits, including long cable runs in AC railway systems. The S202MTR-C40 incorporates a special ring-tongue terminal connection, providing a secure wiring arrangement particularly suited to rolling stock installations exposed to demanding mechanical conditions.

The Type C characteristic provides a practical balance between fault protection and tolerance of moderate starting currents, making this breaker suitable for auxiliary distribution, control equipment and other onboard loads. The S202MTR-C40 also combines railway-specific shock, vibration and fire-performance classifications with a compact two-module format for efficient integration into electrical equipment.

Key Advantages

• Purpose-designed miniature circuit breaker for railway and rolling stock applications.
• 40 A rated current with two protected poles.
• Type C tripping characteristic accommodates moderate starting and inrush currents.
• 10 kA rated short-circuit capacity at 230 / 400 V.
• 15 kA ultimate short-circuit breaking capacity at 230 / 400 V according to IEC/EN 60947-2.
• Special ring-tongue connection designed for secure rolling stock wiring.
• Suitable for protection of long cable runs in AC systems.
• Railway-specific shock, vibration and fire-performance classifications.

Key Features

• ABB S200 MTR series miniature circuit breaker.
• 40 A rated current.
• 2-pole configuration with two protected poles.
• Type C tripping characteristic.
• 440 V rated voltage.
• 440 V rated insulation voltage (Ui).
• 4 kV rated impulse withstand voltage (Uimp).
• 50–60 Hz frequency range.
• Energy limiting class 3.
• Overvoltage category III.
• Pollution degree 3.
• IP20 protection rating.
• Special ring-tongue terminal connection.
• Compact two-module construction.
• ABB order code 2CDS272447R0404.

Reliable Protection for Railway and Traction Circuits

The ABB S202MTR-C40 protects electrical conductors and connected equipment against damaging overcurrents caused by overload and short-circuit conditions. Its automatic protective operation disconnects a faulty circuit when current exceeds the permitted operating range, helping protect wiring and downstream equipment within rolling stock electrical systems.

The Type C characteristic allows moderate temporary starting currents while maintaining effective fault protection. Combined with the S200 MTR series' ring-tongue terminals, railway shock and vibration classification and R26 / HL3 fire-performance classification, the S202MTR-C40 is well suited to demanding onboard distribution and auxiliary electrical installations.

Typical Applications

• Railway rolling stock electrical systems.
• Traction auxiliary electrical circuits.
• Train control and equipment cabinets.
• Long cable runs in AC electrical systems.
• Auxiliary power distribution circuits.
• Control and automation equipment.
• Lighting and onboard equipment circuits.
• Railway electrical distribution and protection assemblies.