Product Overview

Danfoss 080G0057 MCX20B is a programmable electronic controller developed for complex refrigeration, air-conditioning and HVAC/R applications. It provides 20 digital outputs and supports control programs involving compressors, fans, pumps, valves, alarms and other field devices.

This order number is a 24 V version with LCD display and communication support for CANbus and Modbus. The MCX20B is a discontinued legacy controller, but it remains valuable for maintenance and replacement of existing machines that were originally designed around the MCX platform.

Main Features

• Exact Danfoss order number: 080G0057
• Legacy MCX20B programmable controller
• 20 digital or relay outputs
• 24 VAC/DC power supply
• CANbus and Modbus communication
• Integrated LCD operator display
• Real-time clock functionality
• DIN-rail installation
• Designed for programmable refrigeration and HVAC/R equipment
• High maintenance and replacement value for installed systems

Technical Specifications

Compatible System and Applications

The MCX20B is suitable for legacy refrigeration and HVAC/R equipment using custom MCX application software. Typical installations may include chillers, compressor systems, air-handling equipment, heat pumps, industrial refrigeration packages and OEM control panels.

Compatibility depends on more than the controller family. The replacement must match the supply voltage, communication interface, I/O configuration, connector arrangement, firmware and machine-specific application program.

Maintenance and Replacement Notes

Danfoss 080G0057 has been discontinued. It should primarily be treated as a maintenance and replacement product for an existing MCX20B installation. Do not replace it only according to the MCX20B family name.

Before ordering, confirm order number 080G0057, nameplate information, supply voltage, display configuration, communication network, connector set and installed application software. Migration to an MCX20B2 controller may require program conversion, wiring checks and commissioning work.

Related Models

Related models include MCX20B2, MCX15B, MCX15B2, MCX152V and MCX061V. Other MCX20B order numbers may use different power supplies, packaging formats, communication arrangements or display configurations.

Inquiry and Supply Notes

Please send the original nameplate photograph, machine application and required condition when requesting a quotation. Availability may include unused old stock or replacement-market units. Hardware condition, software inclusion, connector availability and delivery time must be confirmed separately.