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Module protection to fight PID-effect and TCO-corrosion

Float Controller CI 30 handles up to 2.500kWp DC power and therefore it is the perfect solution for central inverter installations and plants with large string inverters.

Operation mode: Day or night mode / Adjustable thresholds


  • Fast recovery of PID affected modules due to 30mA output current
  • Immediate PID/TCO protection
  • Easy installation/retrofitting
  • Increase of plus potential up to 1000V

Float Controller CI30 Installation

Float Controller CI30 Installation

Technical Data

General Information

Application range

Central Inverter / String Inverter

Operation mode / Operating range

Day or night mode / Adjustable thresholds

MPPT / device


Max. DC Power

2500 kWp

Rise in potential (to ground)

≤ 1000 VDC

Minimum insulation resistance of PV plant

30 kΩ



Outdoor / indoor



Colour scheme

Blue / structur


Wall mounted

Dimensions & Weight

Housing (width/height/depth)

330/200/120 mm


Approx. 3,16 kg

Input parameters

Supply voltage

24 VDC

Power input

max. 40 W


6,3 A

Measurement PV -

MC4 Plug

Measurement PV +

MC4 socket

Output parameters

PV+ Pull up

MC4 socket

Rated output voltage

≤ 1000 VDC

Rated output current

≤ 30 mA

Outputvoltage *** (0-10 V / AO)

PV - PV +

Outputvoltage of the Float Controllers

Outputcurrent of the Float Controllers

Safety class & Environmental conditions

Safety class according to EN 60529

IP 65

Permissible ambient temperatures

-20 °C to +50 °C

Rel. ambient humidity, non-condensing

Up to 90 %

Altitude above sea level

Max. 2.000 m


FC Power Source

FC Power Source

Outdoor power supply
supports up to 3 Float Controller SI or 1 Float Controller CI

Multi Connector 8

Multi Connector 8

 Enables intelligent usage of Float Controller for Multi MPPT inverter

FC Compact Station

Preconfigured and pre wired all-in-one-solution

  • Float Controller CI30 Installation
  • Technical data
  • Accessories
  • Downloads