Main features & Overview


GFX4 is a four independent loop controller, designed to manage electrical power. GFX4 is a compact unit bounding different technological elements like:

  •     controller
  •     solid state relay
  •     current transformers
  •     fuses-holders (option)

The final result is a cost saving in terms of space and cabling.

GFX4 consisting of:

  • power management unit
  • analog and digital inputs
  • analog and digital outputs
  • standard digital communication
  • integrated solid state relays
  • fuses-holder (option)

Geflex controls autonomously the four loop controllers, furnishing a complete diagnostics like the loaded current, the control of the zones, the alarms state.

A specific step by step software tool has been develop in order to assist the product configuration based on the different applications.

Communication with the outside is of primary importance.

Geflex dialogs with the operator terminals according to the most popular protocols: from the simple and efficient Modbus to, by a second optional fieldbus communication, the by-now indispensable Profibus DP, CANopen, DeviceNet, Modbus RTU, Ethernet Modbus TCP.

The product’s furnished with a standard configuration, simple and quickly to modify. The assignment of different functions to the outputs is very simple.




Ideal for control of mono-bi-tri-phase 30, 60, 80 kW resistive loads

Unit consisting of: 

  • Controller
  • 30, 60, 80kW solid state relay
  • Current transformers (one or four)
  • Fuses-holder (option)
  • 4 universal main inputs
  • 4 heat/cool independent PID
  • 4 main output internally wired to the SSR
  • 4 auxiliary analog inputs (option)
  • 4 configurable output (option): relay / logic / TRIAC / continuous
  • 2 configurable relay alarm output
  • 2 digital inputs
  • Standard digital communication: Modbus RTU
  • Optional Fieldbus communication: Profibus DP, CANopen, DeviceNet, Modbus RTU, Ethernet Modbus TCP
  • DIN rail or panel mounting


30/60Kw with Fuses
30/60Kw without Fuses
80Kw without Fuses
Gefran product range brochure
Power control
GFX4 datasheet
Catalog Read Me
GF_eXpress ReadMe
GF_eXpress UserGuide
HW - Installation and Operation Manual
SW - Programming and Configuration
Modbus Memory Map - GFX4, GFXTHERMO4
Catalog ver. 2.71.0
GF_eXpress ver 2.1.29


UL Certifications - UL - GFX4
SCCR 100KA – GFX4, GFX4-IR and GFW
Profinet Certification - GFX4, GFXThermo4

2D/3D Files

File 2d


File 3d


All files