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137H3681 Danfoss 7.5kW Three Phase iC7-Automation Variable Speed Drive
Danfoss 137H3681 iC7-Automation frequency converter with 16 A output, 380–500 V AC supply, modular architecture and STO safety for industrial automation applications.
£1,848.75
Why Choose the Danfoss 137H3681 iC7-Automation Frequency Converter?
The Danfoss 137H3681 is a high-performance iC7-Automation frequency converter engineered for demanding industrial automation environments requiring precise motor control, high reliability and advanced system integration. As part of Danfoss’ next-generation drive platform, it delivers intelligent control, scalable architecture and robust performance for modern industrial applications.
Designed for efficiency and flexibility, the iC7-Automation series combines advanced vector motor control with modular communication options and integrated safety functions. The 137H3681 ensures stable torque, smooth acceleration and optimised energy usage across a wide range of load conditions.
With a rated output current of 16 A and a three-phase 380–500 V AC supply, this model is suitable for small to medium industrial motors used in conveyors, pumps, fans, compressors and general automation machinery.
Key Advantages
- Advanced iC7-Automation platform for precise motor control.
- 16 A output current suitable for medium-duty industrial applications.
- 380–500 V AC supply range for broad industrial compatibility.
- Integrated Safe Torque Off (STO) safety function.
- High energy efficiency through optimised motor control algorithms.
- Modular design enabling flexible automation integration.
- Industrial IoT-ready architecture for smart manufacturing systems.
- Compact IP20 cabinet-mounted construction.
Key Features
- Danfoss iC7-Automation series.
- Model: 137H3681.
- 16 A rated output current.
- 380–500 V AC input voltage.
- High-performance vector motor control.
- Integrated STO safety functionality (SIL3-capable architecture).
- Modular fieldbus communication options (PROFINET / Ethernet depending on configuration).
- Optimised thermal management system.
- High power density compact design.
- Suitable for continuous industrial duty operation.
Reliable Motor Control for Industrial Applications
The iC7-Automation platform is designed to deliver highly accurate and stable motor performance under dynamic load conditions. It ensures smooth acceleration, consistent torque control and high operational efficiency even in demanding industrial environments.
Its modular architecture supports scalable communication and system expansion, making it suitable for integration into modern automation systems and Industry 4.0 environments.
Typical Applications
- Industrial conveyor systems.
- Pumps and fluid handling systems.
- HVAC and ventilation systems.
- Compressors and process machinery.
- Packaging and production equipment.
- General industrial automation systems.
Technical Specifications
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| Power | 7.5 kW | |
|---|---|---|
| Current | 16 A | |
| Phase | Three Phase | |
| IP Rating | IP20 | |
| EMC Filter | Commercial | |
| Series | iC7-Automation | |
| Product type | Frequency converter | |
| Rated current | 16 A | |
| Input voltage | 380–500 V AC | |
| Input phases | 3-phase | |
| Frequency | 50 / 60 Hz | |
| Output frequency | 0–590 Hz | |
| Protection rating | IP20 (cabinet mounted) | |
| Cooling | Forced air cooling | |
| Frame size | FA03a | |
| Safety | Safe Torque Off (STO) | |
| Approx. weight | 5.2 kg |
Frequently Asked Questions
What is the Danfoss 137H3681 used for?
It is used for precise speed and torque control of AC motors in industrial automation systems.
Does it support communication protocols?
Yes, it supports modular fieldbus options including PROFINET and Ethernet depending on configuration.
Is STO safety included?
Yes, Safe Torque Off (STO) functionality is integrated for safe motor operation.
What type of motors is it compatible with?
It is compatible with standard industrial AC induction motors used in automation and process systems.
Where is it installed?
It is designed for installation inside electrical control cabinets with IP20 protection requirements.
Trusted by Automation Engineers Worldwide
Danfoss iC7-Automation drives deliver intelligent, efficient and reliable motor control for modern industrial automation and process systems.
