The award-winning i550 protec frequency inverter uses the same tried-and-tested technology used in our control cabinet inverters. It only differs in terms of a higher degree of housing protection and an adapted design. If there is not enough space in the control cabinet or the inverter has to be mounted close to the motor in various machine modules, then this versatile and reliable device is the right solution. Thanks to the extension box, a disconnect switch and operating elements can be used.

The requirements of the Ecodesign Directive, Standard EN 50598-2, are met.

Application areas: Conveyor drives, traveling drives, winding drives, hoist drives, extruders, packaging machines, pumps, fans, ...


  • Decentralized drive with IO-Link interface V1.1
  • Integrated diagnostic interface (micro USB) for service purposes
  • Versions with or without repair switch, with keypad or WLAN module for easy commissioning
  • Optionally available with "Safe Torque Off (STO)" with SIL 3 (EN IEC 62061/EN IEC 61508) and Performance Level e (EN ISO 13849-1)

Technical data and features

Technical data

0.37 ... 75 kW


1 AC 120 V
1 AC 230 V
3 AC 230 V
3 AC 400 V
3 AC 480 V
3 AC 600 V
5x digital input
1x digital output
2x analog input
1x analog output
1x NO/NC relay
DC bus
Motor temperature monitoring
Micro USB


Modbus RTU
Modbus TCP

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