137N7831 Danfoss 0.75kW Three Phase iC7-Automation Variable Speed Drive
Danfoss 137N7831 iC7-Automation frequency converter, an air-cooled three-phase 380-500 V AC industrial drive with 2.4 A rated current, IP20 protection, Modbus TCP connectivity and integrated STO safety.
Why Choose the Danfoss 137N7831 iC7-Automation Frequency Converter?
The Danfoss 137N7831 is a compact and efficient iC7-Automation frequency converter designed for precise AC motor control in industrial automation, machinery and process applications. As part of the advanced Danfoss iC7-Automation drive series, it provides dependable motor speed and torque control with flexible connectivity for modern industrial systems.
This frequency converter is engineered for three-phase industrial power supplies and is ideal for cabinet-based installations where space-saving design and reliable performance are essential. Its air-cooled construction, IP20 / Open Type enclosure and FA02b frame make it suitable for control panels, machine cabinets and OEM automation equipment.
With a three-phase 380–500 V AC supply and a rated current of 2.4 A, the Danfoss 137N7831 is suitable for small industrial motors used in conveyors, pumps, fans, handling systems and production machinery. The drive includes standard I/O, Modbus TCP communication, Ethernet port support and integrated Safe Torque Off functionality for secure automation integration.
Key Advantages
Compact Danfoss iC7-Automation frequency converter for industrial motor control.
2.4 A rated current for small automation drive applications.
Three-phase 380–500 V AC input suitable for industrial power networks.
Air-cooled design for efficient cabinet-based operation.
IP20 / Open Type enclosure for control panel installation.
Integrated Safe Torque Off (STO) safety functionality.
Modbus TCP enabled for industrial network communication.
Key Features
Danfoss iC7-Automation drive series.
Part number 137N7831.
Catalogue number 7FC-AUFA3N05-02A4E20F3-000126581.
Three-phase 380–500 V AC supply.
2.4 A rated current.
Air-cooled frequency converter.
IP20 / Open Type protection.
FA02b frame size.
2.8 OPX20 control panel.
Standard I/O including digital inputs, digital input/output channels, analogue inputs, analogue output and relay outputs.
Modbus TCP OS7MT fieldbus protocol enabled.
Ethernet port support.
Integrated STO functional safety.
Reliable Motor Control for Compact Automation Systems
Frequency converters such as the Danfoss 137N7831 control AC motor speed by adjusting output voltage and frequency. This helps improve process accuracy, reduce energy use and lower mechanical stress on motors, gearboxes, belts and driven machinery.
The iC7-Automation platform is designed for flexible integration into modern industrial systems. With standard I/O, embedded safety and Modbus TCP connectivity, the 137N7831 provides a dependable solution for machine builders, system integrators and maintenance engineers working with compact motor control applications.
Typical Applications
Small industrial conveyors and material handling systems.
4 × digital input, 2 × digital input/output, 2 × analogue input, 1 × analogue output, 2 × relay output
Fieldbus protocol
Modbus TCP OS7MT
Additional communication
Ethernet port, no protocol
Functional safety
Safe Torque Off (STO), not upgradable
EMC Filter
Industrial
Frequently Asked Questions
What is the Danfoss 137N7831 used for?
The Danfoss 137N7831 is used to control the speed and torque of AC motors in industrial automation, machinery and process control applications.
What voltage does the Danfoss 137N7831 require?
The drive is designed for a three-phase 380–500 V AC supply.
What is the rated current of this drive?
The Danfoss 137N7831 has a rated current of approximately 2.4 A.
Which communication protocol is enabled?
This model includes Modbus TCP OS7MT fieldbus communication and Ethernet port support for industrial automation integration.
Does the drive include safety functionality?
Yes. The unit includes integrated Safe Torque Off (STO) functional safety.
Trusted by Industrial Automation Engineers
Danfoss iC7-Automation frequency converters are used by machine builders, system integrators and maintenance teams to deliver reliable motor control, efficient operation and flexible connectivity in industrial environments.
Our service agreements are built to support long term procurement relationships. By working closely with engineering teams and procurement departments, we help streamline purchasing processes while ensuring consistent access to critical components and sourcing support when it matters most.
Priority sourcing and supply support
Flexible payment terms for qualifying organisations
Support for engineering, maintenance, and operations
500 +
Stock lines ready to ship
1,000 +
Same day dispatches
3500 +
Customers supported
28
Trusted Manfacturers
● frequently asked questions
Common questions about our products and support
At Led Controls Ltd we help engineers source the right automation and control gear with confidence. below are quick answers to what we are asked most often.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...