Description

The S203-C63 miniature circuit breaker from ABB’s System pro M compact S200 series offers robust and dependable three-phase circuit protection. With its dual tripping mechanisms—a delayed thermal trip for overload protection and an electromechanical trip for short-circuit faults—it ensures fast and reliable fault interruption. Featuring a Type C tripping curve, this MCB is ideal for applications with moderate inrush currents such as HVAC, lighting, or motor systems. The 3-pole modular configuration provides complete phase isolation and fits easily onto standard DIN rails. Optional bottom-fitting auxiliary contacts help save up to 50% space, making it a versatile solution for modern electrical systems. For fully integrated setups, it can be combined with our industrial panel fabrication solutions.

Key Specifications – Miniature Circuit Breaker S203-C63

• Model: S203-C63

• Rated Current: 63 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 mechanism ensures precise fault protection

• Type C curve suitable for circuits with moderate inrush currents

• Compact 3-pole design provides complete phase isolation

• Modular, current-limiting design optimizes panel space

• Compatible with auxiliary and signaling contact modules

Typical Uses

• Industrial and commercial distribution panels

• HVAC, lighting, and small machinery protection

• Automation and control systems

• Sub-distribution and heavy-load circuits

Installation & Support

The S203-C63 is designed for quick and easy DIN-rail installation.

• Supports auxiliary and signaling accessories

• Delivered with complete wiring and installation documentation

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