2CDS273061R0164 ABB S203M-C16UC MCB 10 kA 3P Type C 16 A

Why Choose the ABB S203M-C16UC Miniature Circuit Breaker?

The ABB S203M-C16UC is a high-performance three-pole universal-current miniature circuit breaker (MCB) designed for reliable overload and short-circuit protection in AC and DC electrical systems. As part of the ABB System pro M compact® S200 M UC series, it combines a 16 A rated current, Type C tripping characteristic and 10 kA short-circuit breaking capacity for demanding industrial, control, automation and DC applications.

Designed for flexible AC and DC circuit protection, the S203M-C16UC uses thermal-magnetic operation to protect conductors and connected equipment against sustained overloads and short circuits. Its Type C characteristic accommodates moderate starting and inrush currents while maintaining effective fault protection, making it suitable for industrial control circuits, auxiliary systems and general electrical distribution.

With a rated current of 16 A, three protected poles and a 10 kA breaking capacity at 400 V, the S203M-C16UC provides versatile protection for three-pole electrical circuits. It is designed for AC and DC use, with a rated operational voltage of 400 V AC and up to 440 V DC, while its compact three-module format enables straightforward installation in electrical distribution boards and control panels.

Key Advantages

• Versatile miniature circuit breaker for AC and DC applications.
• 16 A rated current suitable for industrial, control and distribution circuits.
• Three-pole configuration with all three poles protected.
• Type C tripping characteristic suitable for circuits with moderate starting and inrush currents.
• 10 kA short-circuit breaking capacity at 400 V for robust fault protection.
• Rated for 400 V AC and up to 440 V DC applications.
• Compatible with ABB System pro M compact® accessories for flexible system integration.

Key Features

• ABB S200 M UC universal-current MCB series.
• 16 A rated current.
• 3-pole configuration with 3 protected poles.
• Type C tripping characteristic.
• 10 kA Icn breaking capacity at 230 / 400 V AC.
• 25 kA Icu at 230 V and 10 kA Icu at 400 V.
• 400 V AC / up to 440 V DC operational voltage.
• 440 V rated insulation voltage.
• 4 kV rated impulse withstand voltage.
• IP20 protection rating.
• -25 °C to +55 °C operating temperature range.
• Compatible with the ABB System pro M compact® accessory range.

Reliable Protection for AC and DC Circuits

Miniature circuit breakers such as the ABB S203M-C16UC protect electrical cables, conductors and connected equipment against excessive current caused by overloads and short circuits. The thermal release responds to sustained overload conditions, while the magnetic release provides rapid interruption when high fault currents occur.

The ABB S200 M UC series extends the established System pro M compact® range with circuit breakers engineered for flexible AC and DC applications. High short-circuit performance, broad standards compliance and compatibility with System pro M compact® accessories make the S203M-C16UC a versatile choice for industrial engineering, automation, distribution and specialist DC electrical systems.

Typical Applications

• Industrial AC and DC distribution systems.
• Control and automation panels.
• DC auxiliary and control circuits.
• Railway and transport electrical equipment.
• Machinery and production equipment.
• Electrical distribution boards and switchgear assemblies.