ABB 1SDA050923R1 Molded Case Circuit Breaker

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1. Product Overview

The ABB 1SDA050923R1 Molded Case Circuit Breaker is a high-reliability low-voltage protection device used for overload, short-circuit, and undervoltage protection. This circuit breaker features a modular design, capable of quickly disconnecting fault currents to protect electrical equipment and circuits. It supports both manual and optional motorized operation. 1SDA050923R1 is widely used in industrial, commercial, and building power systems to ensure stable operation.

2. Technical Specifications

• Model: 1SDA050923R1

• Product Type: Molded Case Circuit Breaker

• Rated Current: 20 A

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

• Poles: 3P (Three-Pole)

• Breaking Capacity: 10 kA

• Tripping Characteristic: B / C / D type selectable (depending on model)

• Mounting: Panel mount / DIN rail optional

• Operation: Manual switching / Motorized operation optional

• Operating Temperature: –25 ℃ to +70 ℃

• Degree of Protection: IP20 (when installed in cabinet)

• Standards: CE / IEC 60947-2 / UL

3. Advantages and Features

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

2. High Breaking Capacity
   Rated short-circuit breaking capacity up to 10 kA, suitable for high-load industrial environments.

3. Modular Design
   Supports multi-pole combinations and expansions, facilitating system integration and maintenance.

4. Flexible Operation
   Manual switching is convenient, with optional motorized operation for remote control.

5. Durable Construction
   Industrial-grade design resists vibration and temperature variations, suitable for complex power environments.

4. Applications

• Low-voltage distribution in industrial plants

• Commercial building power distribution

• Automation production line protection

• Motor and critical equipment power supply protection

• Low-voltage systems in water treatment, power, and chemical industries

5. Installation and Usage Notes

1. Ensure the breaker’s rated current, voltage, and number of poles match the system before installation.

2. Perform wiring and installation with power disconnected to ensure safety.

3. Avoid installation in humid, corrosive, or high-temperature environments; provide protection if necessary.

4. Regularly inspect breaker status, terminal connections, and operation mechanisms to ensure long-term reliable operation.

5. Do not modify or disassemble the breaker to avoid affecting its protection functions.