Danfoss VLT Soft Starter MCD 500 MCD50131BT5G2X

Why Choose the Danfoss 175G5508 Soft Starter?

The Danfoss 175G5508 is an advanced VLT® Soft Starter MCD 500 designed to provide smooth, controlled starting and stopping of three-phase induction motors in demanding industrial applications. Identified by the type code MCD5-0131B-T5-G2X-00-CV1, this digital soft starter combines precise motor control, comprehensive protection and an integrated bypass contactor in a robust panel-mounted unit.

Using Adaptive Acceleration Control, the MCD 500 automatically selects an appropriate acceleration or deceleration profile for the connected application. This helps reduce electrical inrush current, minimise mechanical shock and protect motors, couplings, belts, pumps and other driven equipment from unnecessary stress.

With a rated operational current of 131 A, a three-phase 200-525 V AC mains supply and a 24 V AC/DC control supply, the Danfoss 175G5508 is suitable for pumps, compressors, conveyors, fans, crushers and process machinery. Its internally bypassed design reduces heat dissipation and power losses after the motor reaches operating speed.

Key Advantages

• Advanced digital soft starter for industrial three-phase motors.
• 131 A AC-53b current rating for demanding motor applications.
• Three-phase 200-525 V AC mains voltage range.
• Integrated bypass contactor reduces heat and operating losses.
• Adaptive Acceleration Control optimises motor starting and stopping profiles.
• Comprehensive motor, supply, current and thermal protection functions.

Key Features

• Danfoss VLT® Soft Starter MCD 500 series.
• 131 A rated operational current.
• AC-53b 3-30:570 utilisation rating.
• Three-phase 200-525 V AC mains supply.
• 24 V AC/DC control voltage.
• Internally bypassed configuration.
• Adaptive Acceleration Control for controlled starting and stopping.
• Graphical control panel with programmable operating parameters.
• Motor thermal model and thermistor input.
• Optional industrial communication modules.

Controlled Motor Starting for Industrial Machinery

A soft starter controls the voltage supplied to an electric motor during acceleration and deceleration. This limits starting current and torque peaks compared with direct-on-line starting, helping to reduce voltage disturbances, mechanical wear and stress throughout the driven system.

The Danfoss MCD 500 uses motor-current feedback and intelligent control algorithms to regulate the motor ramp profile. Its built-in protection functions monitor conditions including phase loss, current imbalance, undercurrent, motor overload, excessive start time, mains frequency and heat-sink temperature.

Typical Applications

• Industrial pumps and pumping stations.
• Conveyors and material handling systems.
• Compressors and refrigeration machinery.
• Fans, blowers and ventilation equipment.
• Crushers, mills and processing machinery.
• Water and wastewater treatment systems.
• Manufacturing and process automation equipment.