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2CDS272445R0501 ABB S202MT-D50 MCB 10kA 2P Type D 50A
ABB S202MT-D50 is a 50 A 2-pole D-characteristic miniature circuit breaker with 10 kA rated short-circuit breaking capacity, designed for reliable circuit protection in demanding railway, traction and industrial applications.
£131.95
Why Choose the ABB S202MT-D50 Miniature Circuit Breaker?
The ABB S202MT-D50 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 50 A rated current with a D tripping characteristic and a high 10 kA rated short-circuit breaking capacity.
Developed specifically for rolling stock applications, the S202MT-D50 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, including motors, transformers and other demanding inductive loads.
With a rated current of 50 A, a 2-pole configuration and 10 kA breaking capacity, the S202MT-D50 provides robust circuit protection in a compact DIN rail format. ABB order code 2CDS272445R0501 identifies this specific D-characteristic 50 A version within the S200MT railway and traction range.
Key Advantages
- Specialised miniature circuit breaker for railway and traction applications.
- 50 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 according to EN 60898-1.
- 15 kA ultimate short-circuit breaking capacity according to IEC 60947-2 at 230 / 400 V AC.
- Robust construction developed for demanding rolling stock and transportation environments.
Key Features
- ABB S200MT miniature circuit breaker series.
- 50 A rated current.
- 2-pole configuration with both poles protected.
- D tripping characteristic.
- 10 kA rated short-circuit breaking capacity at 230 / 400 V AC.
- 400 V AC rated voltage.
- 440 V rated insulation voltage.
- 4 kV rated impulse withstand voltage.
- Energy limiting class 3 with IP20 protection.
- Compact two-module DIN rail construction.
Reliable Circuit Protection for Railway and Traction Systems
Miniature circuit breakers such as the ABB S202MT-D50 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 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-D50 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 circuits with high starting currents.
- Transformer and other inductive-load circuits.
- Industrial control panels, switchgear and transportation automation systems.
Technical Specifications
| Series | S200MT |
|---|---|
| ABB order code | 2CDS272445R0501 |
| Product type | Miniature circuit breaker (MCB) |
| Product group | DC / Traction MCB |
| Rated current | 50 A |
| Number of poles | 2 |
| Number of protected poles | 2 |
| Tripping characteristic | D |
| Rated voltage | 400 V AC |
| Frequency | 50–60 Hz |
| Rated breaking capacity Icn at 230 V AC | 10 kA |
| Rated breaking capacity Icn at 400 V AC | 10 kA |
| Rated ultimate short-circuit breaking capacity Icu at 230 V AC | 15 kA |
| Rated ultimate short-circuit breaking capacity Icu at 400 V AC | 15 kA |
| Rated insulation voltage (Ui) | 440 V |
| Rated impulse withstand voltage (Uimp) | 4 kV |
| Energy limiting class | 3 |
| Overvoltage category | III |
| Pollution degree | 3 |
| Power loss | 7.2 W |
| Protection rating | IP20 |
| Standards | IEC/EN 60898-1 and IEC/EN 60947-2 |
| Railway fire protection | R26 / HL3 according to EN 45545 |
| Shock and vibration classification | Category 1, Class A/B according to IEC 61373 |
| Mounting type | DIN rail |
| Width | 2 modular spacings / 35 mm |
| Installation depth | 69 mm |
| Connection capacity, solid conductor | 0.75–35 mm² |
| Connection capacity, stranded conductor | 0.75–25 mm² |
| Operating ambient temperature | -40 to +70 °C |
| Weight | approx. 0.25 kg |
| EAN | 4016779125178 |
Frequently Asked Questions
What is the ABB S202MT-D50 used for?
The ABB S202MT-D50 is a miniature circuit breaker designed to protect cables and electrical circuits against overload and short-circuit currents in demanding railway, traction and industrial applications.
What is the current rating of the S202MT-D50?
The S202MT-D50 has a rated current of 50 A and uses a 2-pole configuration with both poles protected.
What does the D characteristic mean?
The D tripping characteristic is suited to circuits supplying equipment with high starting or inrush currents, such as motors and transformers, allowing substantial temporary current peaks while maintaining overload and short-circuit protection.
What is the breaking capacity of the ABB S202MT-D50?
The S202MT-D50 has a rated short-circuit breaking capacity of 10 kA according to EN 60898-1 at 230 / 400 V AC and an ultimate short-circuit breaking capacity of 15 kA according to IEC 60947-2 at 230 / 400 V AC.
Is the ABB S202MT-D50 suitable for railway applications?
Yes. The S202MT-D50 belongs to ABB's S200MT range developed specifically for railway applications and is designed to meet demanding fire, shock and vibration requirements encountered in rolling stock and transportation environments.
Trusted Circuit Protection from ABB
ABB S200MT miniature circuit breakers provide dependable overload and short-circuit protection for demanding railway and transportation electrical systems, combining high breaking capacity with robust construction developed for rolling stock and traction environments.
