Should I go with the Mate3 or Mate3s?

Mate3 and Mate3s communications devices for Outback Power
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Posts: 52
Joined: Wed Jan 09, 2019 3:40 pm
My RE system: 12 volt system
26 lead acid batteries, 6V, each rated at 210 amp hours
12 solar panels (Mitsubishi 125 Watt)
Outback VFX2812 inverter and two FLEXmax 60 inverters
Trimetric 2030A battery monitor
Original Outback Mate
DC generator using propane
AC generator using dual fuel

Should I go with the Mate3 or Mate3s?

Post by pioneerMan »

I was sent the following from tech support at Outback:

"The MATE3s has a set of advanced parameters known as “Grid Interface Protection” settings. These provide the inverter(s) in the system with the utility specified conditions for staying connected to the grid in different conditions. There is additional information If you scroll to the bottom of the page at the link here: ... connection."

I read through the webpage they suggested, and most of it was over my head. Bottom line, why is California forcing these regulations on the whole nation? Should I even care since I'm completely off-grid and will never be using grid-tie hardware?

What has been your experience with using the Mate3s? If you had to do it over again, and you are completely off-grid, would you have just stuck with the Mate3?

Thank you.
Forum Czar
Posts: 669
Joined: Mon Jul 24, 2017 8:40 am
My RE system: 8330 watts in three strings, Flexmax 60 x 3, Radian 8048A, GSLC load center, Mate 3S, Hub 10.3, FN-DC and 900 Amp, 48V Trojan T105-RE battery bank.

Re: Should I go with the Mate3 or Mate3s?

Post by pss »

Mate 3S unless your inverter does not support it.
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My RE system: Flexpower Two: (2) FXR3048A, (2) FM80, MATE3s, FlexNetDC
SimpliPhi 48-3.8 (6 @ 48v)
Outback IBR3 battery enclosure
Suniva 330 watt panels (12 - 6 strings of 2 in series)
Hyundai 355 watt panels (6 - 3 strings of 2 in series)
Honda EU7000is gas fuel generator

Re: Should I go with the Mate3 or Mate3s?

Post by raysun »

The Mate3 is discontinued.

The Mate3s has lots of advanced features I don't use off-grid. It has more robust ethernet hardware that I do use off-grid. It will be the most supported of the two in the years to come.
Mike Curran
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Posts: 2123
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My RE system: Outback - Garage roof:
- 8 (2x4) Evergreen 180's into one FM80 (2007/2020 - replaced MX60)
- 6 (2×3) ALEO S79-300's into one FM80 (2017)
- 2 grid-tied VFXR3524A-01's series stacked, replaced GVFX's (2020)
- 12 Surrette/Rolls 2V x 1766Ah (2007)
- Hub10.3, Mate3s, FNDC, RTS. Tigo ES maximizers on each PV module.

Westinghouse Solar - Barn roof: (2012)
- 30 (2x15) 235W panels with Enphase M215 microinverters, grid-tied

Outback Skybox - Barn roof: (2019)
- 14 Talesun 275W in series (DC array input to SB inverter/charger)
- 3 SimpliPhi 3.8 batteries, 48V, 225Ah total
- AC coupled input from 14 Talesun 275W, Enphase M215 microinverters

All self-designed and self-installed
Location: Chagrin Falls, Ohio

Re: Should I go with the Mate3 or Mate3s?

Post by Mike Curran »

I had a Mate3 for my grid-tied, garage roof system and it worked fine for me for a couple of years. When it failed under warranty OB sent me a Mate3s to replace it. Can't say I really noticed a dIfference, besides the fact that it worked.

Having said that, I'd go with the latest, greatest if I were you.
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