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137G3878 Danfoss 4.0kW Three Phase iC7-Automation Variable Speed Drive
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.
£1,219.50
Why Choose the Danfoss 137G3878 iC7-Automation Frequency Converter?
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.
Key Advantages
- Advanced industrial frequency converter for automation systems.
- 4.0 kW motor power rating for demanding applications.
- Three-phase 380-500 V AC input supply.
- Integrated Safe Torque Off (STO) functionality.
- Built-in Modbus TCP communication.
- Ethernet connectivity for industrial networking.
- Integrated brake chopper as standard.
- Compact high-power-density design saves panel space.
Key Features
- Danfoss iC7-Automation frequency converter series.
- 4.0 kW rated motor power.
- 9.2 A continuous output current.
- 380-500 V AC three-phase input voltage.
- IP20 open type enclosure.
- Integrated brake chopper.
- Modbus TCP OS7MT communication.
- Ethernet port connectivity.
- Safe Torque Off (STO) safety functionality.
- Control Panel 2.8 OPX20 included.
- MicroSD card reader and real-time clock.
- EMC Category C3 compliance.
Engineered for High-Performance Automation
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.
Typical Applications
- Industrial conveyors and material handling systems.
- Packaging and production machinery.
- Pumps and pumping systems.
- Fans and ventilation equipment.
- Compressors and HVAC installations.
- Process control applications.
- Automated manufacturing lines.
- OEM machine-building projects.
Technical Specifications
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| Power | 4 kW | |
|---|---|---|
| Current | 9.2 A | |
| Phase | Three Phase | |
| IP Rating | IP20 | |
| EMC Filter | Industrial | |
| 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 |
Frequently Asked Questions
What is the Danfoss 137G3878 used for?
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.
What motor power can this drive control?
The drive is rated for motors up to 4.0 kW (5.5 HP).
Which communication protocol is included?
The drive includes Modbus TCP OS7MT communication together with Ethernet connectivity for industrial networking.
Does the drive include safety functionality?
Yes. The drive includes integrated Safe Torque Off (STO) functionality as standard.
What supply voltage does the drive require?
The unit operates from a three-phase 380-500 V AC supply.
Trusted by Automation Engineers Worldwide
Danfoss iC7-Automation drives are trusted worldwide for delivering intelligent motor control, advanced connectivity, integrated safety and reliable operation across demanding industrial automation environments.
