Danfoss is a Danish manufacturer with over 50 years of expertise in electric drive control. The Danfoss soft starter lineup comprises two main families: MCD 200 (basic class, 18–200 A) and MCD 500 (advanced class with built-in bypass contactor, 21–1600 A). The catalog includes 180 models rated from 7.5 to 800 kW for 200–690 V supply. Danfoss soft starters are used for soft starting pumps, fans, compressors, conveyors, and other heavy-start mechanisms.

How to Choose a Danfoss Soft Starter

Model selection depends on the motor rated current, load profile, and communication interface requirements. MCD 201/202 is a cost-effective solution for standard applications: ventilation, pumps without frequent starts. MCD 500 is designed for heavy-duty conditions: crushers, mills, belt conveyors requiring torque control, built-in bypass, and locked rotor protection.

Model	Series	Current, A	Power	Application
MCD5-0021B-T5	MCD 500	21	7.5 kW	Pumps, fans
MCD5-0084B-T5	MCD 500	84	37 kW	Compressors, conveyors
MCD5-0195B-T5	MCD 500	195	90 kW	Crushers, mills
MCD5-0595C-T5	MCD 500	595	300 kW	Large pumping stations
MCD5-1600C-T5	MCD 500	1600	800 kW	Heavy industrial drives

The MCD 500 series features a built-in bypass contactor that shunts the thyristors after ramp-up, reducing heat dissipation by 90%. For general-purpose motor soft starting, the MCD 200 series with basic protection is sufficient.

Soft Starter Manufacturers

Our soft starter catalog features leading global manufacturers:

Danfoss — 180 models, MCD 200 and MCD 500 series (Denmark)
Schneider Electric — Altistart series (France)

Danfoss Soft Starters by Specifications

Selection by key parameters:

By current: from 18 A (MCD 201, 7.5 kW) to 1600 A (MCD 500, 800 kW)
By voltage: 200–440 V (T4/T5) or 200–690 V (T6/T7)
By series: MCD 201 (basic), MCD 202 (extended protection), MCD 500 (bypass + communications)
By application: pumps, motors, compressors, conveyors

Warranty & Support

Manufacturer warranty for Danfoss soft starters is 24 months. We provide technical consultation, commissioning, and maintenance services. Delivery across Ukraine: Kyiv, Kharkiv, Odesa, Dnipro, Lviv, and other cities. Bank transfer payment with VAT available for corporate customers.

Frequently Asked Questions

What is the difference between Danfoss MCD 200 and MCD 500?

MCD 200 (MCD 201/202) is the basic series for standard applications: ventilation, pumps, 7.5–110 kW range, up to 200 A. MCD 500 is the advanced series with built-in bypass contactor, adaptive torque control, Modbus/Profibus/Ethernet interfaces, up to 800 kW (1600 A). MCD 500 is optimal for heavy-duty starts with frequent cycling.

What motors are compatible with Danfoss soft starters?

Danfoss soft starters are designed for three-phase asynchronous motors rated from 7.5 to 800 kW. Supply voltage: 200–440 V (T4/T5 variants) or 200–690 V (T6/T7). Typical applications: pumps, fans, compressors, conveyors, crushers, mixers.

Do Danfoss soft starters have a built-in bypass contactor?

Yes, the MCD 500 series features a built-in bypass contactor. After ramp-up completion, thyristors are bypassed by a mechanical contactor, reducing heat dissipation by 90% and improving reliability. For MCD 201/202 series, an external bypass contactor can be installed.

How to select a Danfoss soft starter by motor power?

Selection is based on motor rated current, not power. Determine the current from the motor nameplate, consider the overload class (standard AC-53a or heavy-duty AC-53b), and choose a model with the nearest higher rating. For frequent starts (more than 10 per hour), increase the rating by one step.

What warranty is available for Danfoss soft starters?

Manufacturer warranty is 24 months from delivery date. We provide technical support, commissioning, and maintenance services across Ukraine. Danfoss soft starter service life is 15–20 years under proper operating conditions and recommended temperature range.