E320DU-320 ABB

Description

Product name  : E320DU-320  ABB Controller module

Product details:

The ABB E320DU-320 is an electronic overload relay designed for reliable and fast protection of motors in the event of overload or phase failure. It is a self-supplied device, meaning it does not require an external power supply. This particular model has a wide current setting range of 100…320 A.  

It is part of the E200DU and E320DU series of electronic overload relays from ABB. These relays are known for their wide setting range, wide temperature range, high safety standards, and stable, precise trip curves throughout their lifecycle.   

The E320DU-320 provides three-pole protection and includes one normally closed (NC) and one normally open (NO) auxiliary contact.   

Product Parameters

Here are some key specifications for the ABB E320DU-320 electronic overload relay:

• Type: Electronic Overload Relay  
• Current Setting Range: 100…320 A
• Rated Operational Current (Ie): 320 A (AC-3)
• Number of Poles: 3  
• Auxiliary Contacts: 1 NC + 1 NO
• Rated Insulation Voltage (Ui): 690 V
• Rated Impulse Withstand Voltage (Uimp): 6 kV (Main Circuit & Auxiliary Circuit)
• Rated Frequency (fr): 50/60 Hz (Main Circuit), DC/50/60 Hz (Auxiliary Circuit)
• Conventional Free-air Thermal Current (Ith): 6 A (Auxiliary Circuit NC & NO)
• Rated Operational Current AC-15 (Ie):
  • (240V) NC 3 A / NO 3 A
  • (400V) NC 1.1 A / NO 1.1 A
  • (500V) NC 0.7 A / NO 0.7 A
• Rated Operational Current DC-13 (Ie):
  • (24V) NC 1.5 A / NO 1.5 A
  • (60V) NC 0.55 A / NO 0.5 A
  • (125V) NC 0.55 A / NO 0.4 A
  • (250V) NC 0.27 A / NO 0.2 A
• Degree of Protection: IP20 (Housing), IP00 (Main Circuit Terminals)
• Pollution Degree: 3
• Ambient Temperature: -25 … +70 °C (operating)
• Product Net Width: 105.0 mm
• Product Net Height: 187.6 mm
• Product Net Depth: 121.5 mm
• Product Net Weight: 1.430 kg

Product Advantages

The ABB E320DU-320 electronic overload relay offers several advantages:

• Wide Setting Range: The 100…320 A setting range provides flexibility for protecting various motor sizes.
• Electronic Protection: Offers more precise and reliable overload and phase failure protection compared to thermal overload relays.
• Self-Supplied: No need for an external power supply simplifies wiring and installation.
• Wide Temperature Range: Operates reliably in a broad temperature range from -25 °C to +70 °C.
• High Safety Standard: Designed and manufactured to meet high safety standards.
• Stable and Precise Trip Curve: Ensures consistent and accurate tripping characteristics throughout the relay’s lifespan.
• Auxiliary Contacts: Integrated NC and NO auxiliary contacts provide signaling capabilities for control circuits.
• Compact Design: Relatively compact dimensions for easy integration into control panels.

Precautions

When installing and using the ABB E320DU-320 electronic overload relay, observe the following precautions:

• Installation by Qualified Personnel: Installation, commissioning, and maintenance should only be performed by qualified electrical personnel.
• Follow Wiring Diagrams: Adhere strictly to the wiring diagrams provided in the product documentation.
• Proper Current Setting: Ensure the overload relay’s current setting is correctly adjusted according to the motor’s full load current.
• Secure Connections: Ensure all electrical connections are tight and secure to prevent overheating and malfunctions.
• Environmental Conditions: Operate the relay within its specified temperature and humidity ranges. Avoid exposure to excessive dust, moisture, and corrosive substances.
• Inspection and Maintenance: Regularly inspect the relay for any signs of damage or wear. Perform maintenance as recommended in the product documentation.
• Isolation Before Maintenance: Always isolate the power supply before performing any maintenance or troubleshooting on the relay or the connected motor.
• Use Appropriate Protective Equipment: Wear appropriate personal protective equipment (PPE) during installation and maintenance.
• Avoid Modifications: Do not attempt to modify the relay as this may affect its performance and safety.

Product Applications

The ABB E320DU-320 electronic overload relay is typically used for the protection of three-phase AC motors in various industrial and commercial applications, including:

• Motor Control Centers (MCCs): Providing overload and phase failure protection for individual motor starters.  
• Pumps: Protecting motors driving water pumps, oil pumps, and other fluid transfer systems.
• Fans and Blowers: Ensuring the reliable operation and protection of ventilation and air handling equipment.
• Compressors: Safeguarding motors in air compressors and refrigeration units.
• Conveyor Systems: Protecting motors driving material handling conveyors.
• HVAC Systems: Providing motor protection for heating, ventilation, and air conditioning equipment.
• General Industrial Machinery: Protecting motors used in a wide range of industrial processes.

Advantages: Foxboro, OVATION, TRICONEX, Allen-Bradley, ABB, Motorola, Siemens Moore, Ge Fanuc, Woodward, Bently Nevada and other major import brands!

We have the same series of models in stock.  If you don’t find the model you need, please contact us and we will provide you with an official quotation！

Colour：new Warranty: 12 months
Lead Time：3-day working day Country of origin: Sweden
Price: Please contact us Product weight：0.515kg
Shipping Port: Xiamen, China
Payment: Bank of Chicago, Bank of Singapore
Express cooperation: fedex, DHL, UPS and your express account
Service: Professional Sales provides 24 hours /7 days online service

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