ABB PR122/P-LI circuit breaker

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1. Product Overview

The ABB PR122/P-LI Circuit Breaker is a miniature circuit breaker designed for low-voltage distribution systems. It provides automatic disconnection for overload and short-circuit protection, safeguarding circuits and equipment from damage due to fault currents. The modular design allows easy installation, making it suitable for residential, commercial, and industrial electrical distribution systems.

2. Technical Specifications

• Model: PR122/P-LI

• Product Type: Miniature Circuit Breaker

• Rated Current: 2 A ～ 63 A (depending on model)

• Poles: Single-pole / Double-pole / Triple-pole

• Rated Operating Voltage: 230/400 V AC

• Breaking Capacity: 6 kA

• Tripping Characteristics: B, C, D curves selectable

• Mounting Method: DIN rail

• Protection Class: IP20

• Operating Temperature: ‑25 ℃ to +40 ℃

• Certifications: IEC 60898-1, CE, UL

3. Advantages and Features

1. Reliable Protection
   Accurate overload and short-circuit protection ensures circuit and equipment safety.

2. Multiple Tripping Curves
   B, C, D curves allow adaptation to various types of loads.

3. Modular Design
   Compact and lightweight, suitable for quick installation in distribution boxes and DIN rails.

4. Enhanced Safety
   IP20 protection reduces risk of accidental contact and electric shock.

5. Easy Operation
   Indicator window displays ON/OFF status for easy monitoring.

6. International Standards Compliance
   Meets IEC/UL standards for safety and reliability.

4. Typical Applications

• Residential and commercial building distribution

• Industrial low-voltage equipment protection

• Power branch circuit protection

• Automation control cabinets and distribution boxes

• Motor and lighting circuit protection

• OEM electrical equipment protection

5. Installation and Usage Notes

1. Verify the rated current and voltage match the circuit before installation.

2. Power off before wiring to avoid electric shock and equipment damage.

3. Avoid direct use in humid, corrosive, or high-temperature environments.

4. Regularly inspect the breaker status and operation to ensure reliability.

5. Ensure conductor cross-section complies with rated current when wiring distribution systems.