ABB 826A008B-1

1. Product Overview

ABB 826A008B-1 is a DC contactor control board product manufactured by ABB, belonging to the GAF series or multi-wave control PCBA products. Based on ABB's mature AF contactor technology, this product is specifically designed for DC current on-off applications.

2. Product Parameters

According to the searched data of related models (GAF series):

Parameter Item	Specification
Rated Operating Voltage	Up to 1000V DC (IEC Standard)
Rated Current	Up to 2050A (depending on specific model)
Control Coil Voltage	24-60V DC / 100-250V AC/DC
Main Contacts	1NO (Normally Open)
Auxiliary Contacts	1NO + 1NC
Pole Number	1P
Certification Standards	IEC, cULus, UL508

3. Product Features

• Powerful Performance - Rated voltage up to 1000V DC and rated current up to 2050A.
• Flexible Application - Wide coil operating voltage range, covering various application scenarios.
• Energy Efficiency - Adopting electronic coil technology, the holding power consumption efficiency is 5-10 times that of traditional ones.
• Stability and Reliability - Insensitive to voltage drop, able to maintain pull-in even if the voltage drops by 55% or a 20ms voltage dip occurs.
• Quiet Operation - The coil works in a DC environment with low operating noise.
• Easy Installation - The overall dimension is consistent with AF contactors of the same specification, with strong versatility.
• Built-in Surge Suppression - Provides additional circuit protection functions.

4. Structure and Composition

The product adopts the following structural design:

• PCBA Control Board - Integrates control circuits and supports multi-wave control technology.
• Electromagnet Core System - The moving iron core cooperates with the static iron core to achieve reliable pull-in.
• Contact System - Adopts transverse magnetic field arc extinguishing technology to improve breaking capacity.
• Modular Design - Assembled with fewer parts, facilitating customization and maintenance.
• Electronic Coil Technology - Reduces power consumption and improves response speed.

5. Application Fields

This contactor is widely used in the following industries:

• Photovoltaic Solar Energy Systems
• Urban Rail/Metro DC Power Supply Systems
• Electric Vehicle Charging Piles
• Energy Storage Battery Packs
• Uninterruptible Power Supply (UPS)
• Communication Industry
• Other DC Power Distribution Systems

6. Installation and Maintenance

6.1 Installation Points

• Installation Ambient Temperature: Must comply with ABB low-voltage electrical equipment environmental requirements.
• Installation Altitude: The impact of altitude on electrical strength must be considered.
• Terminal Blocks: Pay attention to the wiring marks to ensure correct connection.
• Fixing Method: Adopt standard mounting holes for easy fixing.

6.2 Maintenance

• Regularly clean the contact surface to avoid oil stains or oxidation.
• Check the working status of the coil to ensure the voltage is within the allowable range.
• Observe the contact wear and replace if necessary.
• The system has a self-diagnostic function, facilitating status monitoring and maintenance.

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