Danfoss 137H3685 iC7-Automation frequency converter with 31A output current, 380–500V AC supply, modular design and STO safety for industrial automation applications.
£3,048.00
The Danfoss 137H3685 is a high-performance iC7-Automation frequency converter designed for advanced industrial motor control applications requiring precision, efficiency and robust system integration. Built on Danfoss’ latest-generation drive platform, it delivers intelligent control and reliable performance across demanding automation environments.
As part of the modular iC7 series, this drive combines advanced vector control, flexible communication architecture and integrated safety functionality. The 137H3685 ensures smooth torque delivery, precise speed regulation and optimised energy efficiency even under dynamic and variable load conditions.
With a rated output current of 31 A and a three-phase 380–500 V AC supply, this model is suitable for medium to higher-power industrial motors used in conveyors, pumps, compressors, fans and general automation machinery.
The iC7-Automation platform is designed to deliver precise and stable motor performance across a wide range of industrial processes. It ensures smooth acceleration, consistent torque delivery and high energy efficiency even under fluctuating load conditions.
Its modular design enables seamless integration into modern automation architectures, supporting scalable communication, diagnostics and predictive maintenance capabilities for Industry 4.0 environments.
| Power | 15 kW |
|---|---|
| Current | 31 A |
| Phase | Three Phase |
| IP Rating | IP20 |
| Series | iC7-Automation |
| Product type | Frequency converter |
| Rated current | 31 A |
| Input voltage | 380–500 V AC |
| Input phases | 3-phase |
| Frequency | 50 / 60 Hz |
| Output frequency | up to 590 Hz |
| Protection rating | IP20 (cabinet installation) |
| Cooling | Forced air cooling |
| Frame size | FA05a |
| Safety | Safe Torque Off (STO) |
| Approx. weight | 14.2 kg |
| EMC Filter | None |
It is used for precise speed and torque control of AC motors in industrial automation systems.
Yes, it supports modular fieldbus options such as PROFINET RT depending on configuration.
Yes, it includes integrated Safe Torque Off (STO) functionality for safe motor operation.
It is compatible with standard industrial AC induction and permanent magnet motors.
It is designed for installation inside electrical control cabinets with IP20 protection requirements.
Danfoss iC7-Automation drives deliver intelligent, efficient and reliable motor control for modern industrial automation systems.
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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...