Danfoss 137G3878 iC7-Automation frequency converter, 4.0 kW variable frequency drive with 380-500 V AC three-phase input, Modbus TCP communication, Ethernet connectivity and integrated STO safety functionality.
£1,300.80
The Danfoss 137G3878 is a compact and intelligent iC7-Automation frequency converter designed for demanding industrial automation and machine control applications. As part of the advanced Danfoss iC7-Automation drive platform, it delivers precise motor control, integrated safety functionality and modern Ethernet-based connectivity for seamless integration into industrial networks. Designed for machine builders and OEM manufacturers, the drive combines high efficiency, flexibility and reliability in a space-saving package.
The iC7-Automation series has been developed to support Industry 4.0 requirements with intelligent control architecture, advanced communication options and integrated security features. Its modular design enables efficient commissioning and future-proof system expansion while helping improve machine performance and energy efficiency.
With a rated motor power of 4.0 kW, a three-phase 380-500 V AC supply and a nominal output current of 9.2 A, the Danfoss 137G3878 is ideally suited for conveyors, pumps, fans, compressors and industrial production machinery. Its compact IP20 cabinet-mounted design simplifies installation while maximising available panel space.
The Danfoss iC7-Automation platform combines intelligent motor control, integrated networking and scalable functionality to support modern industrial automation strategies. Advanced processing power and flexible communication capabilities enable improved machine productivity, reduced downtime and simplified system integration.
With integrated Modbus TCP communication, Ethernet connectivity and comprehensive I/O functionality, the 137G3878 can be easily deployed in standalone machines or complex automated production systems. Its compact footprint and efficient cooling design make it particularly suitable for space-constrained control panels.
| Power | 4 kW |
|---|---|
| Current | 9.2 A |
| Phase | Three Phase |
| IP Rating | IP20 |
| Series | iC7-Automation |
| Part number | 137G3878 |
| Model code | IC7-60FA3N05-09A2E20F3 |
| Product type | Frequency converter / variable frequency drive |
| Rated motor power | 4.0 kW (5.5 HP) |
| Rated current | 9.2 A |
| Input voltage | 380-500 V AC |
| Input phases | 3-phase |
| Input frequency | 50 / 60 Hz |
| Protection rating | IP20 Open Type |
| EMC category | C3 |
| Additional networking | Ethernet port |
| Functional safety | STO (Safe Torque Off), not upgradable |
| Digital inputs | 4 DI + 2 configurable DI/O |
| Analogue inputs | 2 AI |
| Analogue outputs | 1 AO |
| Relay outputs | 2 RO |
| Mounting type | Cabinet / panel mounting |
| Frame size | FA02a |
| Net weight | Approx. 4.47 kg |
| Gross weight | Approx. 5.65 kg |
| EMC Filter | Industrial |
The Danfoss 137G3878 is a variable frequency drive designed to provide precise speed and torque control for three-phase AC motors used in industrial automation applications.
The drive is rated for motors up to 4.0 kW (5.5 HP).
The drive includes Modbus TCP OS7MT communication together with Ethernet connectivity for industrial networking.
Yes. The drive includes integrated Safe Torque Off (STO) functionality as standard.
The unit operates from a three-phase 380-500 V AC supply.
Danfoss iC7-Automation drives are trusted worldwide for delivering intelligent motor control, advanced connectivity, integrated safety and reliable operation across demanding industrial automation environments.
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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...