Solar Lattice

Solis S5-GC(75-125)K-US

ID: prod:solis-s5-gc-us
IRI: https://solarlattice.org/kb/prod/solis-s5-gc-us
Status: active
Also known as: S5-GC, Solis S5, S5 Series, S5-GC75K-US, S5-GC80K-US, S5-GC90K-US, S5-GC100K-US, S5 Series Grid Inverter
Category: Inverters
Make: solis
Product level: family

The Solis S5 Series is a three-phase grid-tied string inverter family for the US market, covering the S5-GC75K-US, S5-GC80K-US, S5-GC90K-US and S5-GC100K-US models. The S5-GC75K-US connects to a 480 V three-phase grid with PE and has a rated output current of 90.2 A, while the S5-GC100K-US is rated at 108.3 A. On the S5-GC75K-US, maximum input current is listed as 8x32 A. Maximum efficiency is 98.7% for the 75K model and 98.8% for the 100K model, and the 75K model has a CEC efficiency of 98.3%. Current distortion is below 3% at rated output power. RS485 is the standard communication link, and Wi-Fi or cellular can be added as options; the unit has an LCD display.

<!-- review notes

sentence 1: support check: partial - Models listed, but three-phase, string inverter and US market are only implied by names/3/PE, not explicitly stated.
sentence 1: review: partial - The passage names the S5 Series Grid Inverter and the four models, but 'three-phase', 'string' and 'US market' are not stated (the US market is only hinted at by the -US suffix). -->

Claims

`manufactured_by`

c1 drafted · lead Solis

Solis Manual S5 (75-100)K US V2,3(20230623) sec=h1 h=3e00c077410c

`uses_protocol`

c2 drafted · lead RS-485

Standard communication connection on all models

Solis Manual S5 (75-100)K US V2,3(20230623) tbl=16.r35 h=a24bedbf8940
Solis Manual S5 (75-100)K US V2,3(20230623) tbl=19.r35 h=0c1dbcc42ab3
Solis Manual S5 (75-100)K US V2,3(20230623) tbl=17.r36 h=1e607db0967f
Solis Manual S5 (75-100)K US V2,3(20230623) tbl=18.r36 h=1e607db0967f

c3 drafted · lead Wi-Fi

Optional communication connection

Solis Manual S5 (75-100)K US V2,3(20230623) tbl=16.r35 h=a24bedbf8940
Solis Manual S5 (75-100)K US V2,3(20230623) tbl=19.r35 h=0c1dbcc42ab3
Solis Manual S5 (75-100)K US V2,3(20230623) tbl=17.r36 h=1e607db0967f
Solis Manual S5 (75-100)K US V2,3(20230623) tbl=18.r36 h=1e607db0967f

c4 drafted · lead Cellular data

Optional communication connection

Solis Manual S5 (75-100)K US V2,3(20230623) tbl=16.r35 h=a24bedbf8940
Solis Manual S5 (75-100)K US V2,3(20230623) tbl=19.r35 h=0c1dbcc42ab3
Solis Manual S5 (75-100)K US V2,3(20230623) tbl=17.r36 h=1e607db0967f
Solis Manual S5 (75-100)K US V2,3(20230623) tbl=18.r36 h=1e607db0967f

`efficiency`

c5 drafted · lead nominal 98.7 PERCENT

Conditions: Maximum efficiency, S5-GC75K-US

Solis Manual S5 (75-100)K US V2,3(20230623) tbl=16.r17 h=9699a08efe38

review note: possible conflict with c6 (same source; check the conditions); possible conflict with c7 (same source; check the conditions)

c6 drafted · lead nominal 98.8 PERCENT

Conditions: Maximum efficiency, S5-GC100K-US

Solis Manual S5 (75-100)K US V2,3(20230623) tbl=19.r17 h=446ae11f775b

review note: possible conflict with c5 (same source; check the conditions); possible conflict with c7 (same source; check the conditions)

c7 drafted · lead nominal 98.3 PERCENT

Conditions: CEC efficiency, S5-GC75K-US

Solis Manual S5 (75-100)K US V2,3(20230623) tbl=16.r18 h=ba8e370b74b4

review note: possible conflict with c5 (same source; check the conditions); possible conflict with c6 (same source; check the conditions)

`rated_output_current`

c8 verified · fact nominal 90.2 A

Conditions: Rated output current, S5-GC75K-US

Solis Manual S5 (75-100)K US V2,3(20230623) tbl=16.r13 h=6c3250a08603

verified by: review-workflowverified on: 2026-10-24review note: possible conflict with c9 (same source; check the conditions)

c9 verified · fact nominal 108.3 A

Conditions: Rated output current, S5-GC100K-US

Solis Manual S5 (75-100)K US V2,3(20230623) tbl=19.r13 h=f212e99a964f

verified by: review-workflowverified on: 2026-10-24review note: possible conflict with c8 (same source; check the conditions)

`max_input_current`

c10 verified · fact nominal 32 A

Conditions: Per input, printed as 8x32, S5-GC75K-US

Solis Manual S5 (75-100)K US V2,3(20230623) tbl=16.r6 h=f670065548d8

verified by: review-workflowverified on: 2026-10-24

`nominal_voltage`

c11 drafted · lead nominal 480 V

Conditions: Rated grid voltage, three-phase plus PE (3/PE~480), S5-GC75K-US

Solis Manual S5 (75-100)K US V2,3(20230623) tbl=16.r12 h=ec6bd7465e8b

Referenced by

Solis S5-GC ARC-FAULT applies_to c12
Solis S5-GC GRID-INTF applies_to c8
Solis S5-GC INI-FAULT applies_to c9
Solis S5-GC NO-GRID applies_to c10
Solis S5-GC OV-BUS applies_to c8
Solis S5-GC OV-DC applies_to c7
Solis S5-GC OV-G-F applies_to c7
Solis S5-GC OV-G-V applies_to c7
Solis S5-GC OV-TEM applies_to c12
Solis S5-GC PV ISO-PRO 01/02 applies_to c13
Solis S5-GC Reve-DC applies_to c8
Solis S5-GC UN-BUS applies_to c9
Solis S5-GC UN-G-V applies_to c8

Data