600V Ground Fault Protection Device GFPD Morningstar


600V Ground Fault Protection Device for MPPT Solar Charge Controller


600V Ground Fault Protection Device GFPD-600V Morningstar

The 600V Ground Fault Protection Device™ (GFPD) prevents current from following any unintended paths during a ground fault. Other ground fault detection/interruption products break the bond to the grounded conductor. When this occurs, not only is the earth bond compromised, but the battery and DC loads can also be left ungrounded and floating. For a negatively grounded system this means that the negative side of the battery and loads can float to negative Voc in relation to ground and the positive side can float to (negative Voc Vbat). Morningstar’s GFPD better isolates the array from the battery and loads, while maintaining the bond to ground. Compatible with:

  • TriStar MPPT 600V
  • TriStar MPPT
  • ProStar MPPT

Key features and benefits

  • Disconnects both the positive and negative conductor and completely isolates PV source circuits
  • Trips at 300mA compared to 1A for alternative solutions
  • Provides design flexibility to accommodate large and small array
  • Uses high quality breaker solutions rather than fuses which are problematic
    to replace at remote sites
  • Works like a traditional AC GFI
  • Maintains the integrity of earth bond for battery and loads
  • Does not require an extra warning label at the battery per U.S. National
    Electric Code requirements
  • Makes it easier to locate and troubleshoot ground faults
  • Powered via the PV system’s battery
  • Equipped with both visual and audible alarms
  • Built to support both single controller and multiple controller systems
  • When the earth bond is not broken, Morningstar’s GFPD will only shut off
    affected controllers
  • All loads will continue to operate safely with the battery remaining bonded to
  • Multiple controllers and GFPDs can be added on an as-needed basis

Additional information

Maximum Solar Voltage (Voc)

600 volts

Maximum Solar Current (Isc)


Nominal Battery Voltage

12, 24, 36 or 48 Vdc

Supply Voltage Range

10-72 Vdc

Self Consumption


Ground Fault Threshold Current

300 mA /- 10%

Number of Poles


Trip Method


Output Trip Signal


Operating Temperature Range

'-40 C to 60C

Manufacturer Warranty

5 Years

CE and RoHS compliant


UL1741 and CSA C22.2 No. 107.1-01 Listed


UL-1077 Listed


FCC Class B Part 15 Compliant


U.S. National Electrical Code (NEC) 690.5 Compliant for use as a GFPD device


Manufactured in a Certified ISO 9001 Facility