ACB LT Panel

An ACB LT Panel is a control and protection panel equipped with an Air Circuit Breaker (ACB) for managing low-voltage electrical circuits. It is commonly used in industrial, commercial, and residential applications to protect electrical equipment from overload, short-circuit, and fault currents. The ACB is designed to protect circuits with currents typically up to 6300 A or more.

Key Features of ACB LT Panels

1. Air Circuit Breaker (ACB)

• Primary Protection Device – Protects circuits from faults and overloads.
• Adjustable Settings – Allows customization of overload, short-circuit and under-voltage protection.
• Manual or Automatic Operation – Can be manually operated or automatically triggered by faults.

2. Busbars & Terminals

• High-capacity busbars to conduct large currents.
• Terminal blocks for easy wiring and disconnection.

3. Meters & Indicators

• Ammeters & Voltmeters – Monitor current and voltage in the circuit.
• Energy Meters – Track power consumption.
• Fault Indicators – Display fault conditions such as overload or short circuit.
• Phase Sequence Indicators – Ensure correct phase rotation.

4. Protection Features

• Overload Protection – Prevents the circuit from being damaged by excessive current.
• Short-Circuit Protection – Interrupts the circuit in the event of a short circuit.

Components of an ACB LT Panel

1. Air Circuit Breaker (ACB)

• Main device for circuit protection. Can be either fixed or draw-out type.
• Adjustable trip settings for precise fault detection.

2. Control & Monitoring Devices

• Microprocessor-based trip units for advanced protection and settings.
• Digital/Analog meters to monitor electrical parameters. Control switchgear for circuit operations like opening and closing.

3. Auxiliary Components

• CTs (Current Transformers) – Used for measuring high currents in the panel.
• VTs (Voltage Transformers) – Used for voltage measurement.
• Indication lamps to show operational status and fault indicators.