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VACON0020-3L-0038-4 Danfoss

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The VACON0020-3L-0038-4 is part of the VACON 20 Low Voltage Drives series by Danfoss, featuring a nominal input current of 41.7 Amps and an overload current of 57 Amps. This drive supports a 3-phase input, has a motor power rating of 18.5 kW, and uses an IP21/Nema 1 enclosure. It measures 414 mm in height, 165 mm in width, 202 mm in depth, and weighs 11 kilograms.

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Product Description:

The VACON0020-3L-0038-4 is a three-phase variable frequency drive designed by Danfoss for the VACON 20 Low Voltage Drives series. It serves as the interface between the supply network and an AC motor, modulating voltage and frequency so that plant controllers can optimize flow, pressure, or positioning without mechanical throttling. Typical applications include conveyor lines, centrifugal pumps, and fan arrays where tight speed regulation improves efficiency and reduces component wear.

The drive supports a nominal input current of 41.7 A on a three-phase supply and delivers a continuous output of 38 A to the motor terminals. Its short-term overload capability reaches 57 A, providing headroom for acceleration or load surges before current-limiting functions intervene. The inverter supports an 18.5 kW motor, while the output frequency can reach 320 Hz for compatible high-speed equipment. A 40 A time-delay fuse protects the input bus, and braking energy can be dissipated through an external resistor with a minimum resistance of 17 Ω. Both the mains and motor connections use 3 × 10 + 10 mm² copper conductors, providing suitable cable capacity for the drive’s current range. These connections should be routed with adequate separation from control wiring to reduce electrical interference during operation.

Forced ventilation moves 75 m³/h of cooling air through the heat sink, and the enclosure carries an IP21 / NEMA 1 classification suited to clean indoor panels. The chassis stands 414 mm tall, spans 165 mm in width, and measures 202 mm in depth, allowing vertical installation in a suitably sized control cabinet. Adequate clearance around the ventilation path helps maintain consistent airflow across the internal power components. The shipping mass is 11 kg, which supports manageable handling while providing the thermal mass expected of a drive in this power class.

Continuous Current
38 A
Cooling Air
75 m3/h
Depth
202 mm
Enclosure Class
IP21 / Nema 1
Fuse Size
40 A
Height
414 mm
Input Phase
3~
Mains Cable
3*10+10 mm2 Cu
Max Output Freq
320 Hz
Min Brake Resistance
17 Ohm
Motor Cable
3*10+10 mm2 Cu
Motor Power
18.5 kW
Nominal Input Current
41.7 A
Overload Current
57 A
Weight
11 kg
Width
165 mm

Frequently Asked Questions about VACON0020-3L-0038-4:

Q: What is the continuous current capability of the VACON0020-3L-0038-4 drive?

A: The VACON0020-3L-0038-4 has a continuous current rating of 38 A, providing reliable performance for standard motor loads.

Q: What is the maximum output frequency of the VACON0020-3L-0038-4?

A: This model supports a maximum output frequency of 320 Hz, allowing versatile speed control for AC motors.

Q: What type of enclosure protection does the VACON0020-3L-0038-4 offer?

A: The VACON0020-3L-0038-4 is built with an IP21 / Nema 1 enclosure class, suitable for indoor environments that require limited protection against dust and dripping water.

Q: What motor power does the VACON0020-3L-0038-4 support?

A: The nominal motor power supported by this drive is 18.5 kW, making it compatible with medium-sized industrial motors.

Q: What is the minimum brake resistance recommended for the VACON0020-3L-0038-4 drive?

A: The VACON0020-3L-0038-4 requires a minimum brake resistance of 17 Ohm for proper braking operation.


Internal Product Review

  • ‘‘The VACON0020-3L-0038-4 is a Danfoss VACON 20 low voltage drive with 18.5 kW motor power and 38 A continuous current. An IP21 / NEMA 1 enclosure and 3-phase input make this unit well suited for dependable integration in enclosed industrial panels. Strong overload handling up to 57 A is a standout advantage, and 320 Hz maximum output frequency supports flexible motor control.’’

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