Description
ABB EHDB280 – 21 – 11
The ABB EHDB280 – 21 – 11 is a high – performance contactor designed for a variety of industrial applications.
Product Description
This contactor, the ABB EHDB280 – 21 – 11, is primarily used for switching and controlling electrical circuits in industrial automation systems. It has a rated operational current of 280 A at 690 V and 40 °C, making it suitable for handling high – power loads1. The ABB EHDB280 – 21 – 11 features a robust construction that ensures reliable performance even in harsh industrial environments. It can efficiently control the flow of electricity, enabling precise operation of connected equipment. With its high – quality materials and advanced manufacturing process, the ABB EHDB280 – 21 – 11 offers excellent electrical conductivity and low contact resistance, which helps to reduce energy losses and heat generation.
Product Parameters
- Rated control circuit voltage (UC): 50 Hz, 230 – 240 V1.
- Rated operational current AC – 1 (IE): 280 A at 690 V and 40 °C1.
- Number of poles: 31.
- Number of main contacts NO: 2; Number of main contacts NC: 11.
- Number of auxiliary contacts NO: 1; Number of auxiliary contacts NC: 11.
- Terminal type: Main circuit – bars1.
Advantages and Characteristics
The ABB EHDB280 – 21 – 11 is known for its high reliability. It has been designed and tested to meet strict international standards, ensuring stable operation over a long service life. For example, in a manufacturing plant where the contactor is used to control the power supply of production equipment, it has shown a low failure rate even after continuous operation for several years. This contactor also offers easy integration into existing automation systems. Its modular design allows for straightforward installation and connection with other components, reducing installation time and costs. Additionally, the ABB EHDB280 – 21 – 11 is energy – efficient. Its low contact resistance helps to minimize power losses, contributing to reduced energy consumption and lower operating costs.
Application Fields and Application Cases
The ABB EHDB280 – 21 – 11 is widely used in various industries, including manufacturing, energy, and automation control. In a manufacturing factory, it can be used to control the motors of production lines, ensuring the smooth operation of the equipment. In an energy – generation plant, it can be applied to switch and control the power distribution circuits. For example, in a solar power plant, the ABB EHDB280 – 21 – 11 is used to connect and disconnect the solar panels from the power grid according to the power generation conditions. This helps to optimize the power output and ensure the stable operation of the power grid.
Competitor Comparison
Compared to similar products in the market, the ABB EHDB280 – 21 – 11 stands out for its higher reliability and better energy – saving performance. It has a more robust construction and better – quality materials, which enable it to withstand harsher operating conditions. Its advanced design also results in lower contact resistance and higher electrical conductivity, leading to more efficient energy utilization.
Selection Suggestions
When selecting the ABB EHDB280 – 21 – 11, consider the compatibility with your existing equipment and systems. Make sure that the voltage, current, and interface types match your requirements. Also, take into account the installation environment. If the environment is dusty or humid, you may need to choose appropriate protective measures. In terms of budget, although the ABB EHDB280 – 21 – 11 may have a relatively higher initial cost, its long – term reliability and energy – saving features can bring significant cost savings in the long run.
Precautions
During installation, make sure to follow the installation instructions carefully. Ensure that the terminals are connected firmly to avoid loose connections, which could cause overheating and other problems. Regularly check the contactor for signs of wear and tear, such as pitting or discoloration of the contacts. Clean the contactor regularly to remove dust and dirt. When replacing the contactor, make sure to turn off the power supply to avoid electrical shock.
Shanxi Runsheng Import & Export Co., Ltd. is your reliable partner. We provide the sales and technical support of ABB EHDB280 – 21 – 11 and other automation spare parts. Please visit our website www.sxrsrobot.com or contact us, and we will be happy to serve you.
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