ABB S203MT-C0.5 MCB - S200M - 3P - C - 0.5A

ABB S203MT-C0.5 MCB – S200M – 3P – C – 0.5A

ABB S203MT-C0.5 3-pole 0.5 A miniature circuit breaker with C characteristic tripping curve and 10 kA short circuit capacity for railway, traction and industrial circuit protection.

SKU: S203MT-C0.5Alt SKU: S203MT-C0,5MPN: 2CDS273445R0984
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List Price £154.71 ex VAT
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Manufacturer Lead Time Estimated Delivery 14 weeks
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Why Choose the ABB S203MT-C0.5 Miniature Circuit Breaker?

The ABB S203MT-C0.5 is a high quality 3-pole miniature circuit breaker (MCB) designed to provide reliable overload and short circuit protection in railway, rolling stock and demanding industrial applications. As part of the specialist ABB S200MT miniature circuit breaker series, it is engineered to meet the requirements of traction systems and railway vehicles whilst delivering dependable performance in critical electrical installations.

The circuit breaker combines a delayed thermal tripping mechanism for overload protection with an electromagnetic tripping mechanism for short circuit protection. Its C characteristic tripping curve is ideal for protecting general purpose circuits with moderate inrush currents, making it suitable for control systems, signalling equipment and industrial automation applications.

With a 0.5 A rated current, 3-pole configuration and 10 kA short circuit capacity, the ABB S203MT-C0.5 delivers dependable protection for low current three-phase circuits. Its compact DIN rail mounted design simplifies installation whilst maintaining compatibility with ABB System pro M Compact accessories.

Key Advantages

  • Specialist 3-pole miniature circuit breaker for railway and industrial applications.
  • 0.5 A rated current for low current protection circuits.
  • C characteristic tripping curve suitable for moderate inrush currents.
  • 10 kA short circuit capacity for reliable fault protection.
  • Designed specifically for traction and rolling stock electrical systems.
  • DIN rail mounting for fast installation inside electrical panels.

Key Features

  • ABB S200MT railway miniature circuit breaker series.
  • 0.5 A rated current.
  • 3-pole configuration.
  • C characteristic tripping curve.
  • 10 kA rated short circuit capacity.
  • Thermal overload and electromagnetic short circuit protection.
  • Compatible with ABB System pro M Compact accessories.
  • DIN rail mounting for modular electrical installations.

Reliable Circuit Protection for Railway and Industrial Systems

The ABB S200MT range has been developed specifically for railway and traction applications, providing dependable protection against overloads and short circuits in demanding operating environments. The product range complies with IEC/EN 60898-1 and IEC/EN 60947-2 whilst supporting the use of ABB System pro M Compact accessories for enhanced functionality.

Its C curve characteristic provides a balanced response for general purpose electrical circuits with moderate inrush currents, making the S203MT-C0.5 suitable for signalling equipment, auxiliary systems, industrial control panels and automation equipment where reliable protection is essential.

Typical Applications

  • Railway rolling stock electrical systems.
  • Traction and signalling equipment.
  • Industrial control panels.
  • Automation and control circuits.
  • Auxiliary electrical systems.
  • Low current three-phase distribution circuits.

Technical Specifications

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Current 0.5 A
Phase Three Phase
Poles 3-pole
Device Type MCB
Trip Curve C curve
Breaking Capacity 10 kA
Manufacturer ABB
Series S200MT
Model S203MT-C0.5
Product type Miniature circuit breaker (MCB)
Product ID 2CDS273445R0984
EAN 4016779123884
Rated current 0.5 A
Number of poles 3
Tripping characteristic C
Rated short circuit capacity 10 kA
Rated ultimate short circuit breaking capacity 15 kA
Rated service short circuit breaking capacity 11.2 kA
Rated operational voltage 400 V AC
Rated insulation voltage 440 V
Frequency 50 / 60 Hz
Protection rating IP20
Mounting type DIN rail
Dimensions (H × W × D) 88 × 52.5 × 69 mm
Weight Approx. 0.336 kg
HS Code 85362010
Country of Manufacture Germany

Frequently Asked Questions

What is the ABB S203MT-C0.5 used for?

The S203MT-C0.5 protects low current three-phase electrical circuits against overloads and short circuits in railway, traction and industrial applications.

What current rating does this circuit breaker have?

The ABB S203MT-C0.5 has a 0.5 A rated current.

What does the C tripping characteristic mean?

The C curve is suitable for circuits with moderate inrush currents, making it appropriate for general industrial and control applications.

How many poles does the S203MT-C0.5 have?

This model features a 3-pole configuration for protecting three-phase electrical circuits.

Is the S203MT-C0.5 suitable for railway applications?

Yes. The S200MT range has been developed specifically for railway and traction applications and is widely used in rolling stock electrical systems.

Trusted by Railway and Industrial Engineers Worldwide

ABB S200MT miniature circuit breakers are trusted by railway engineers, OEMs and industrial panel builders for dependable circuit protection, compact installation and long-term reliability in demanding electrical systems.