Authorized ABB Distributor (Low Voltage Drives)
ABB - Low Voltage Drives ABB-44520 - Braking Resistor, 8.32 OHMS, 9920 WATTS, GCE18 Enclosure, 28W x 10D x 10H in, 45 lbs

ABB Low Voltage Drives ABB-44520 Braking Resistor, 8.32 OHMS, 9920 WATTS, GCE18 Enclosure, 28W x 10D x 10H in, 45 lbs

Alternate Item Number: 3AUA0000015253

UPC: 662348000793

Documents & Media
Technical DrawingSpecification Sheet

Contact for Pricing

Call +1 (262) 252-1600 (toll-free 877-268-3700) or email [email protected] for pricing and availability.

Overview

The ABB Braking Resistor, SKU ABB-44520, is engineered for effective energy dissipation in industrial motor braking applications. This unit features a resistance of 8.32 OHMS and a substantial power rating of 9920 WATTS, crucial for managing regenerative energy during motor deceleration. Its primary function is to absorb excess electrical energy, preventing damaging voltage spikes that can compromise variable frequency drive (VFD) systems and connected equipment. The resistor is housed within a GCE18 enclosure, providing IP54 protection against dust and moisture ingress, ensuring reliable operation in challenging industrial settings. Physical dimensions are 28 inches wide by 10 inches deep by 10 inches high, with a weight of 45 pounds. Manufactured in the USA by ABB - Low Voltage Drives, a recognized leader in power solutions, this braking resistor is built for durability and performance. It is an essential component for applications requiring precise motor control and enhanced system safety, such as in conveyor systems, pump controls, and CNC machinery, where effective management of braking energy is paramount for operational integrity and equipment longevity.
  • 8.32 OHMS resistance for effective energy dissipation
  • 9920 WATTS power rating for high-demand applications
  • GCE18 enclosure with IP54 protection against dust and moisture
  • Durable construction, 28"W x 10"D x 10"H, 45 lbs
  • Manufactured in the USA by ABB - Low Voltage Drives
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Frequently Asked Questions

What is the purpose of a braking resistor with variable frequency drives?

Braking resistors dissipate regenerated power to prevent bus voltage from exceeding the drive's rated limit, increasing braking torque for faster, controlled braking.

What is the purpose of braking choppers (modules)?

Braking modules monitor the drive's DC bus and activate external braking resistors to manage regenerated power and prevent over-voltage trips.

What wire type should be used when connecting directly to resistors in Type ED enclosures?

If installing without optional terminal connections, always use 200ºC rated silicone or Teflon wire when attaching directly to resistors.

What is the function of the thermal switch in Type GCE and ED enclosures?

The normally closed thermal switch detects resistor temperature overloads and is used to alert or shut down the system if the temperature becomes too high.

What is the conduit knockout size for Type GCE enclosures?

The Type GCE enclosures have removable 1/2 inch conduit knockouts for routing standard 90ºC rated wire.

What is the purpose of the aluminum case in Type CR resistors?

The aluminum case is corrosion-resistant and helps dissipate heat from the resistor element, allowing for efficient cooling.

How are Powerohm Type CR resistors constructed?

They feature a nickel-chromium wire helically wound inside a ceramic fixture, placed in a corrosion-resistant aluminum case with high-temperature wire leads.

What is the typical duty cycle for the listed braking resistors?

The duty cycles listed include 3sec on/27sec off, 10sec on/50sec off, 30sec on/180sec off, and 60sec on/180sec off.

What is the maximum continuous current rating for terminal connections in Type ED enclosures?

Type ED enclosures supply terminal connections up to 400 amps continuous.

What are the voltage ratings for ACS250 drives?

ACS250 drives are available for single-phase 100-120V and 200-240V applications, and three-phase 200-240V and 380-480V applications.