Why Choose the ABB S203MC25-1 Miniature Circuit Breaker?
The ABB S203MC25-1, also identified as S203M-C25, is a premium three-pole miniature circuit breaker (MCB) designed to provide dependable protection against overloads and short circuits. As part of the trusted ABB System pro M compact S200M series, it delivers reliable protection for residential, commercial and industrial electrical installations.
The circuit breaker features a delayed thermal tripping mechanism for overload protection and an electromechanical tripping mechanism for rapid short-circuit interruption. Its C tripping characteristic makes it ideal for protecting lighting circuits, distribution boards, HVAC equipment, control panels and other electrical loads with moderate inrush currents.
With a rated current of 25 A, a three-pole configuration and a rated short-circuit capacity of 10 kA at 230/400 V AC, the S203MC25-1 offers dependable protection for three-phase electrical systems. Its compact DIN rail mounted design enables straightforward installation inside switchboards, distribution panels and industrial control cabinets.
Key Advantages
- Reliable overload and short-circuit protection for three-phase circuits.
- 25 A rated current suitable for commercial and industrial installations.
- C-curve tripping characteristic for moderate inrush current applications.
- 10 kA rated short-circuit breaking capacity.
- Current-limiting construction helps reduce fault energy.
- Compact DIN rail mounting simplifies installation and maintenance.
Key Features
- ABB System pro M compact S200M series.
- Three-pole miniature circuit breaker.
- 25 A rated current.
- C tripping characteristic.
- 10 kA rated short-circuit capacity (Icn).
- 15 kA rated ultimate breaking capacity (Icu) at 400 V AC.
- Thermal overload and electromechanical short-circuit protection.
- Current-limiting design for improved system safety.
- Compatible with ABB bottom-mounted auxiliary contacts.
- 35 mm DIN rail mounting.
Reliable Circuit Protection for Commercial and Industrial Applications
The ABB S203MC25-1 automatically disconnects electrical circuits whenever overload or short-circuit conditions occur, helping protect wiring, electrical equipment and personnel. Its current-limiting construction minimises fault energy and helps reduce potential damage to connected systems.
Its C-curve characteristic makes it particularly suitable for general-purpose electrical distribution, lighting installations, HVAC equipment, control panels and machinery with moderate transient starting currents.
Typical Applications
- Commercial electrical distribution boards.
- Industrial switchboards.
- Control panels and automation systems.
- HVAC equipment.
- Lighting and socket circuits.
- OEM machinery and manufacturing equipment.
