Why Choose the ABB S203MC16-1 Miniature Circuit Breaker?
The ABB S203MC16-1, also identified as S203M-C16, is a high-performance three-pole miniature circuit breaker (MCB) designed to protect electrical circuits against overloads and short circuits. As part of the ABB System pro M compact S200M series, it provides reliable circuit protection for residential, commercial and industrial electrical installations.
This miniature circuit breaker uses a delayed thermal tripping mechanism to protect against sustained overloads and an electromechanical tripping mechanism for rapid short-circuit interruption. Its C-curve tripping characteristic is suitable for general distribution circuits and equipment with moderate starting currents, including lighting systems, control equipment, small motors and building-services installations.
With a rated current of 16 A, a three-pole configuration and a rated short-circuit capacity of 10 kA at 230/400 V AC, the S203MC16-1 provides dependable protection for three-phase circuits. Its compact modular format allows straightforward installation on a standard 35 mm DIN rail inside distribution boards, switchboards and industrial control panels.
Key Advantages
- Reliable overload and short-circuit protection for three-phase circuits.
- 16 A rated current for commercial and industrial electrical loads.
- C-curve tripping characteristic suitable for moderate inrush currents.
- 10 kA short-circuit breaking capacity at 230/400 V AC.
- Current-limiting operation helps reduce fault energy and equipment damage.
- Compact DIN rail design simplifies installation and panel integration.
Key Features
- ABB System pro M compact S200M series.
- Three-pole miniature circuit breaker.
- 16 A rated current.
- C tripping characteristic.
- 10 kA rated short-circuit capacity.
- Thermal overload and electromechanical short-circuit protection.
- Current-limiting design for enhanced circuit protection.
- Clear red ON and green OFF contact-position indication.
- Compatible with ABB bottom-mounted auxiliary contacts.
- Standard 35 mm DIN rail mounting.
Reliable Protection for Three-Phase Electrical Circuits
The ABB S203MC16-1 automatically disconnects the electrical supply when an overload or short circuit is detected. Its thermal mechanism responds to prolonged excess current, while the electromechanical mechanism provides rapid interruption during severe fault conditions.
The C-curve characteristic allows the breaker to tolerate moderate temporary current surges without unnecessary tripping. This makes it suitable for general power distribution, lighting, control systems, HVAC equipment and small motors commonly used in commercial and industrial installations.
Typical Applications
- Three-phase commercial distribution circuits.
- Industrial control panels and switchboards.
- Lighting and general power circuits.
- HVAC and building-services equipment.
- Small motors, pumps and fans.
- OEM machinery and automation systems.
