ABB 1SDA051208R1 Molded Case Circuit Breaker

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1. Product Overview

The ABB 1SDA051208R1 Molded Case Circuit Breaker (MCCB) is part of the ABB S200 series, designed for overload, short-circuit, and undervoltage protection in low-voltage distribution systems. It features high reliability, long service life, and overload protection, suitable for industrial, commercial, and residential power protection and distribution systems.

2. Technical Specifications (Typical)

• Model: 1SDA051208R1

• Type: Molded Case Circuit Breaker (MCCB)

• Rated Current: 100 A

• Poles: 3P

• Rated Short-Circuit Breaking Capacity: 25 kA (IEC 60947-2)

• Rated Operational Voltage: AC 415 V / DC 250 V

• Trip Characteristic: B, C, D type selectable (standard C-type)

• Mechanical Life: ≥10,000 operations

• Electrical Life: ≥4,000 operations

• Mounting: Panel or DIN rail mounting

• Optional Accessories: Auxiliary contacts, alarm contacts, remote operation modules

• Operating Temperature: -25 °C to +60 °C

• Protection Class: IP20

3. Advantages & Features

• Reliable overload and short-circuit protection: Ensures circuit and equipment safety.

• Multi-pole design: Suitable for three-phase distribution and complex loads.

• Long service life: Extended mechanical and electrical life reduces maintenance cost.

• Modular design: Supports auxiliary contacts, remote operation, and alarm modules for functional expansion.

• Quick installation: Standardized design facilitates installation in control cabinets and distribution boards.

4. Typical Applications

• Low-voltage distribution in industrial plants

• Power distribution in commercial buildings and offices

• Residential and public building power protection

• Motor, pump, and fan circuit protection

• Power supply protection for automation equipment

• Data center and critical load protection

5. Installation & Operation Notes

1. Rated current matching: Select breaker rated current above load operating current.

2. Trip characteristic selection: Choose B/C/D type according to load characteristics.

3. Correct wiring: Ensure proper connection of power supply and load; avoid loose connections or short circuits.

4. Environmental conditions: Avoid humidity, dust, and corrosive gases; maintain proper ventilation.

5. Periodic inspection: Check breaker operation and wiring regularly to ensure long-term reliability.