ABB 1SDA051269R1 Molded Case Circuit Breaker

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Product Overview

ABB 1SDA051269R1 Molded Case Circuit Breaker (MCCB)
The ABB 1SDA051269R1 is a high-performance MCCB designed for overload and short-circuit protection in industrial, commercial, and building electrical systems. It features adjustable trip characteristics to protect circuits and equipment from overcurrent damage. The MCCB has a modular design for easy installation and can be combined with auxiliary contacts, alarm modules, and shunt trips for intelligent power distribution management.

Technical Specifications

• Model: 1SDA051269R1

• Product Type: Molded Case Circuit Breaker (MCCB)

• Rated Operational Current (In): 100 A

• Rated Insulation Voltage (Ui): 800 V AC

• Rated Operational Voltage (Ue): 690 V AC

• Poles: 3P

• Breaking Capacity (Icu / Ics): 25 kA / 20 kA

• Trip Characteristic: Thermal-magnetic (adjustable)

• Auxiliary Contacts: Optional NO/NC

• Mounting Method: Panel or DIN rail mounting

• Protection Class: IP20

• Standards: IEC 60947-2

Advantages and Features

1. High-Reliability Protection
   Provides overload, short-circuit, and underload protection to ensure circuit and equipment safety.

2. Adjustable Trip Design
   Thermal-magnetic trip can be set according to load characteristics, enhancing system adaptability.

3. Modular Expansion
   Can be combined with auxiliary contacts, alarm modules, and shunt trips for remote monitoring and alarm functionality.

4. Easy Installation and Maintenance
   Standard mounting method allows easy field installation and replacement.

5. Industrial-Grade Quality
   High breaking capacity suitable for complex industrial environments, extending service life.

Typical Applications

• Industrial plant low-voltage distribution systems

• Commercial and building electrical systems

• Machinery and automation equipment protection

• Power and energy management systems

• HVAC systems and motor protection

• Distribution and control panel protection

Installation & Usage Notes

1. Ensure rated current and breaking capacity match the load before installation.

2. Verify proper wiring to avoid misconnection or loose contacts.

3. Avoid installation in high humidity, dusty, or corrosive environments.

4. Regularly inspect breaker operation and contact condition to ensure reliable protection.

5. Disconnect system power before maintenance or replacement.