Description

The S203-C16 miniature circuit breaker from ABB’s System pro M compact S200 range delivers dependable protection for three-phase circuits in residential, commercial, and industrial environments. Designed with dual tripping mechanisms — a thermal trip for overloads and an electromechanical trip for short-circuits — it ensures accurate and reliable fault interruption. The Type C characteristic curve makes it ideal for circuits with moderate inrush currents such as lighting, small motors, and HVAC systems. Compact and modular, the 3-pole S203-C16 ensures full phase isolation and space-efficient installation on DIN rails. For improved system performance and integration, it can be incorporated within our industrial panel fabrication solutions.

Key Specifications – Miniature Circuit Breaker S203-C16

• Model: S203-C16

• Rated Current: 16 A

• Tripping Characteristic: Type C

• Rated Voltage: 230/400 V AC

• Breaking Capacity: 6 kA

• Poles: 3P (Three-Pole)

• Tripping Mechanisms:

  • Thermal: Overload protection

  • Electromechanical: Short-circuit protection

• Standards Compliance: IEC/EN 60898-1, IEC/EN 60947-2, UL1077

• Mounting: DIN-rail modular system

• Configurations: 1P, 1P+N, 2P, 3P, 3P+N, 4P

• Operating Temperature: -25°C to +55°C

Highlights

• Dual tripping design for accurate fault protection

• Three-pole configuration ensures complete circuit isolation

• Type C curve suitable for circuits with medium inrush currents

• Compact, current-limiting design improves system safety

• Compatible with ABB auxiliary and signaling accessories

Typical Uses

• Three-phase industrial and commercial distribution systems

• Lighting, HVAC, and motor control circuits

• Sub-distribution and automation panels

• Equipment and process line protection

Installation & Support

The S203-C16 is built for quick, tool-free DIN-rail installation and reliable operation.

• Supports auxiliary and signaling contact modules

• Supplied with installation and wiring documentation

• Backed by ABB’s technical support and global service network