Why Choose the ABB S204C63 Miniature Circuit Breaker?
The ABB S204C63, also identified as S204-C63, is a high-performance four-pole miniature circuit breaker (MCB) designed to protect cables and electrical circuits against overloads and short circuits. Part of the established ABB System pro M compact S200 series, it is suitable for residential, commercial and industrial electrical installations.
The circuit breaker combines a delayed thermal tripping mechanism for overload protection with an electromechanical tripping mechanism for rapid short-circuit interruption. Its C-curve tripping characteristic is suitable for circuits with moderate inrush currents, including lighting systems, HVAC equipment, distribution boards, control panels and general-purpose machinery.
With a rated current of 63 A, a four-pole configuration and a rated short-circuit capacity of 6 kA at 400 V AC, the S204C63 provides dependable protection for three-phase systems requiring simultaneous switching of four conductors. Its compact four-module design allows straightforward installation on a standard 35 mm DIN rail.
Key Advantages
- Reliable overload and short-circuit protection for four-pole electrical circuits.
- 63 A rated current for higher-load commercial and industrial applications.
- C-curve tripping characteristic suitable for moderate inrush currents.
- 6 kA rated short-circuit capacity at 400 V AC.
- Current-limiting operation helps reduce fault energy and equipment damage.
- Compact DIN rail format simplifies installation and panel integration.
Key Features
- ABB System pro M compact S200 series.
- Four-pole miniature circuit breaker.
- 63 A rated current.
- C tripping characteristic.
- 6 kA rated short-circuit capacity.
- 10 kA ultimate breaking capacity at 400 V AC.
- Thermal overload and electromechanical short-circuit protection.
- Red ON and green OFF contact-position indication.
- Failsafe bidirectional cylinder-lift screw terminals.
- Compatible with ABB bottom-mounted auxiliary contacts.
- Standard 35 mm DIN rail mounting.
Reliable Protection for Four-Pole Electrical Installations
The ABB S204C63 automatically disconnects the electrical supply when an overload or short circuit is detected. Its thermal mechanism responds to sustained excess current, while the electromechanical mechanism provides rapid interruption during severe fault conditions.
The C-curve characteristic permits moderate temporary current surges without unnecessary tripping. This makes the breaker well suited to three-phase distribution systems, HVAC installations, lighting circuits, control equipment and machinery with predictable starting currents.
Typical Applications
- Three-phase distribution boards requiring four-pole switching.
- Commercial electrical installations.
- Industrial switchboards and control panels.
- HVAC and building-services equipment.
- Lighting and general power distribution.
- OEM machinery and automation systems.
