ABB 1SDA050954R1 Circuit Breaker

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1. Product Overview

The ABB 1SDA050954R1 Circuit Breaker is a low-voltage protective device used in ABB distribution systems. It protects circuits from overloads, short circuits, and other electrical faults. When abnormal currents occur, the breaker quickly disconnects the power, safeguarding electrical equipment and personnel. The 1SDA050954R1 is suitable for industrial, commercial, and building low-voltage systems and can be combined with auxiliary contacts, switch disconnectors, and contactors for complete circuit protection and control solutions.

2. Technical Specifications

• Model: 1SDA050954R1

• Product Type: Low-voltage Circuit Breaker

• Rated Current: 32 A

• Rated Voltage: AC 400 V / DC 250 V

• Poles: 3

• Breaking Capacity: 6 kA (AC)

• Operation: Handle operation with ON/OFF indication

• Auxiliary Contacts: Optional for status feedback

• Mechanical Life: ≥ 10,000 operations

• Electrical Life: ≥ 4,000 operations (rated load)

• Mounting: Panel mount / DIN rail mount

• Degree of Protection: IP20

• Operating Temperature: –25 ℃ to +60 ℃

• Standards: IEC 60947-2 / CE

3. Advantages and Features

1. Efficient Circuit Protection
   Quickly disconnects overload and short-circuit currents to protect equipment and wiring.

2. Easy Operation
   Handle operation with clear ON/OFF indication for convenient field use.

3. Modular Design
   Can be combined with auxiliary contacts, contactors, and switch disconnectors for versatile control solutions.

4. Industrial-grade Reliability
   High mechanical and electrical life suitable for frequent industrial operation.

5. Flexible Installation
   Panel or DIN rail mounting allows easy integration into distribution systems.

4. Applications

• Industrial motor and production equipment protection

• Building low-voltage distribution systems

• Distribution panels and switchboards

• Factory automation control systems

• Power system maintenance and safety isolation

5. Installation and Usage Notes

1. Verify rated current, voltage, and breaking capacity compatibility before installation.

2. Perform wiring and installation with power disconnected for safety.

3. Correctly connect input and output terminals to ensure reliable contact.

4. Periodically inspect breaker, handle, and auxiliary contacts to ensure long-term reliable operation.

5. Avoid direct use in high humidity, dusty, or corrosive environments; provide protective enclosures if necessary.