VLT® Soft Start Controller MCD 100

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A compact and cost-effective soft starter

An extremely cost-effective and compact soft starter that provides basic soft start and stop functionality and easy DIN rail mounting.

The ‘fit and forget’ semiconductor design simplifies installation and reduces required panel space, and selection can be made on the basis of the motor power. Timed voltage ramp up and down are possible. Ramp time can be individually and accurately adjusted with rotary switches from 0.4–10 seconds, and starting torque can be adjusted from 0–85% of the direct on-line torque.

Supply voltages and power range 

  • 3 x 208-600 V...0.1-11 kW (25 A)
  • 24-480 V AC or DC

Features and benefits

Panel space can be saved due to the compact size

Selection is simple and stock is kept to a minimum thanks to universal control voltage

Commissioning time and space are saved as a result of easy DIN rail mounting for sizes up to 30 kW

Reliable operation is ensured due to robust semiconductor design and an almost unlimited number of starts per hour without derating

No external cooling or oversizing is necessary thanks to the maximum ambient temperature of 50°C without derating


Type Name Language Valid for Updated Download File type
Brochure - AD Danfoss Drives Product Overview English Multiple 20 Mar, 2019 1.7 MB PDF
Brochure - AD Danfoss Drives Product Overview English United States 01 Nov, 2019 1.5 MB PDF
Brochure - AD DrivePro® Life Cycle Services English Multiple 28 Dec, 2018 2.5 MB PDF
Brochure - AD Ecodesign - meet requirements English Multiple 01 Jun, 2020 1.1 MB PDF
Brochure - AD Ecodesign flyer English Multiple 01 Nov, 2019 406.7 KB PDF
Brochure - AD Energy efficiency - 3 questions English Multiple 10 May, 2016 253.6 KB PDF
Brochure - AD Motor technology - free choice English Multiple 10 May, 2016 877.6 KB PDF
Design guide - AJ VLT® Soft Starter MCD 100 English Multiple 18 Nov, 2011 1.8 MB PDF
Brochure - AD VLT® Soft Starter Selection Guide English Multiple 29 Jun, 2016 1.0 MB PDF

Related applications

Scroll compressors or reciprocating compressors in air-conditioning units, conveyors, pumps, fans and mixers.

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    Variable speed control of a chiller allows you to provide constant pressure regulation while matching the capacity to the actual need based on measurements in the system. Speed control is beneficial when a compressor runs for long periods at partial load. Reduce operational costs by running applications at a lower speed which reduces energy consumption. And reduce installation costs by optimizing the system and the compressor itself.

  • Drives for pumps
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    Enhance your system performance, extend your equipment life, and protect against leakages, by optimizing pump operations using Danfoss AC drives.

Contact us

For further information or to get a quote for this soft starter please contact us