6.5 × 8.9 × 1.2 in

MicroinverterAptos Solar

Aptos Solar MAC-800

Name: Aptos Solar MAC-800
Brand: Aptos Solar

Microinverter. 4 models, 382 W–766 W AC at 208 V / 240 V.

UL 1741 SBCEC listed · Aug 22, 2022Rapid shutdown

Model

Rated AC power766 W
CEC weighted efficiency96.5%
Max DC input60 V
Warranty25 years

Models & power ratings

CEC Grid Support Inverter List (Oct 7, 2026) · NLR SAM inverter library · 4 models

Model	Nominal AC	Grid voltage	CEC continuous	Rated AC (SAM)	CEC weighted eff.	DC test window	CEC listed	UL 1741 SB
MAC-400	382 W	208 V	387 W	387 W	96.5%	38–48 V	Nov 1, 2023	SB
MAC-400	382 W	240 V	383 W	383 W	96.5%	34–48 V	Aug 22, 2022	SB
MAC-800	766 W	208 V	767 W	767 W	96.5%	34–48 V	May 1, 2023	SB
MAC-800	766 W	240 V	767 W	767 W	96.5%	34–48 V	Aug 22, 2022	SB

DC input (PV side)

Aptos Solar datasheet · CEC Grid Support Inverter List (Oct 7, 2026) · NLR SAM inverter library

Max DC input voltage60 V
MPPT operating range16–60 V
CEC test DC voltages (min / nom / max)34 / 42 / 48 V
Start-up voltage22 V
Max input current15 A
DC input at rated output (CEC test)795 W

AC output (grid side)

Aptos Solar datasheet · CEC Grid Support Inverter List (Oct 7, 2026)

Rated AC power766 W
Max apparent power800 VA
CEC-measured continuous output767 W
Grid voltage208 V / 240 V
Phase208 V (1-phase of 3-phase service), split-phase 120/240 V
Max continuous output current3.19 A
Max units per 20 A branch5

Efficiency

CEC Grid Support Inverter List (Oct 7, 2026) · Aptos Solar datasheet · NLR SAM inverter library

CEC weighted efficiency96.5%
Peak efficiency96.7%
Night-time standby (tare)0.11 W
Power to start converting1.4 W

CEC weighted efficiency is measured by an accredited lab at six power levels and three DC voltages — the number to compare between inverters.

Grid & smart-inverter certification

CEC Grid Support Inverter List (Oct 7, 2026) · Aptos Solar datasheet

UL 1741 SB (3rd ed.)Yes — CSA Group, certificate Mar 17, 2023
UL 1741 SA (SA8–SA13)2 of 4 models — CSA Group
Firmware tested (SA)V01.01.00
Volt-VAr with reactive power priority (SA13)2 of 4 models
Freq-Watt / Volt-Watt (SA14–15)2 of 4 models
Disable permit service / limit active power (SA17–18)2 of 4 models
CSIP (IEEE 2030.5) conformanceVia gateway during testing (Y*)
Monitor key data & scheduling (Rule 21 Phase 3)Yes (attested Nov 1, 2023)
CEC listedAug 22, 2022
Last CEC updateMay 1, 2023
Standards listed on the datasheetUL 1741 SA, UL 1741 SB, UL 1741, IEEE 1547, FCC Part 15, CA Rule 21

UL 1741 SB is required for new interconnections in California (Rule 21) since 2026.

Safety & protection

Aptos Solar datasheet

Rapid shutdown (NEC 690.12)Yes (NEC 690.12, datasheet)

Size, weight & environment

Aptos Solar datasheet

Dimensions (W × H × D)6.5 × 8.9 × 1.2 in
Weight3.9 lb (1.8 kg)
Enclosure ratingIP67
CoolingNatural convection (no fans)
Operating temperature−40 to +65 °C

Warranty

Aptos Solar datasheet

Standard warranty25 years

Panel compatibility & string sizing

Aptos Solar datasheet · NLR PVWatts v8 · CEC PV Module List · Cali-Graf calculation

CityColdest air, °CHottest cell, °C

MAC-800: max DC 60 V · MPPT 16–60 V (datasheet)

Most-permitted panels in Southern California

Panel	Power	Voc cold / Vmp hot	Check	DC/AC	Installed together
Qcells Q.PEAK DUO BLK ML-G10.C+ 410	410 W	48.1 / 30.6 V	✓ Within range	0.53	—
Qcells Q.PEAK DUO BLK ML-G10+ 410	410 W	48.1 / 30.6 V	✓ Within range	0.53	—
LONGi LR5-54HABB-400M	400 W	39.3 / 25.3 V	✓ Within range	0.52	—
JA Solar JAM54S31-405/MR	405 W	39.4 / 25.5 V	✓ Within range	0.53	—
Hyundai Solutions HiN-T440NF(BK)	440 W	40.9 / 27 V	✓ Within range	0.57	—
Silfab Solar SIL-440QD	440 W	41.1 / 28 V	✓ Within range	0.57	—
Qcells Q.TRON BLK M-G2+ 430	430 W	41.3 / 28 V	✓ Within range	0.56	—
Qcells Q.TRON BLK M-G2.H+ 430	430 W	41.3 / 28 V	✓ Within range	0.56	—
REC Group REC460AA Pure-RX	460 W	68.8 / 47.1 V	✗ Cold Voc above max input	0.6	—
Elin (Sirius PV) ELNSM54M-HC-410	410 W	39.3 / 25.3 V	✓ Within range	0.53	—
Qcells Q.TRON BLK M-G2.C+ 430	430 W	41.3 / 28 V	✓ Within range	0.56	—
Tesla TSP-420	420 W	43.4 / 27.7 V	✓ Within range	0.55	—

Voltage check only, from CEC panel data and NLR weather for the city. Final design must follow the inverter manual and NEC 690.7.

Compare with similar 766 W inverters

CEC Grid Support Inverter List (Oct 7, 2026) · building permits

Inverter	Power	CEC weighted eff.	DC test window	UL 1741 SB	Latest CEC	SoCal permits
Aptos Solar MAC	382 W–766 W	96.5%	34–48 V	Yes	2023	0
Enphase Energy IQ8 Series	240 W–633 W	97.5%	25–95 V	44 of 45	2025	1,104
Hoymiles HM-xxxNT	295 W–1.44 kW	96.5%	29–48 V	11 of 12	2023	3
Power Center Dxxx-M2	696 W–696 W	96.5%	33–48 V	Yes	2022	2
FOXESS M1-1000-NA	1 kW–1 kW	95.5%	35–50 V	Yes	2026	—

Same type and grid voltage, power range covering this model; same fields from the same sources.

About Aptos Solar

CEC Grid Support Inverter List (Oct 7, 2026)

ManufacturerAptos Solar
Listed in CEC asAptos Solar Technology LLC
Websiteaptossolar.com
Models on CEC lists175

Other series

MAC-xxxR

Documents

manufacturer documents

PDF
Built for Safety
Datasheet · Aptos Solar Technology · Feb 2025
PDF
Built for Safety
Datasheet · Aptos Solar Technology · Jun 2026
PDF
Built for Safety
Datasheet · Aptos Solar Technology · Jun 2026
PDF
Built for Safety
Datasheet · Aptos Solar Technology · Feb 2025

Questions & answers

How efficient is the Aptos Solar MAC?

The California Energy Commission lists a weighted efficiency of 96.5% for Aptos Solar MAC models, measured at six power levels and three DC voltages. The datasheet states a peak efficiency of 96.7%.

What sizes does the Aptos Solar MAC come in?

The CEC list includes 4 models from 382 W to 766 W AC: MAC-400, MAC-400, MAC-800, MAC-800.

Is the Aptos Solar MAC certified to UL 1741 SB?

Yes — the CEC Grid Support Inverter List shows UL 1741 SB for all models.

What is the MAC-800’s DC input voltage range?

Max DC input voltage is 60 V per the datasheet. MPPT operating range 16–60 V. CEC tested it at 34–48 V DC.

What warranty does it have?

25 years standard (manufacturer datasheet).

Sources

California Energy Commission — Grid Support Inverter List (solar and battery inverters), data as of Oct 7, 2026. Manufacturer-reported, confirmed by CEC against certificates and test reports.
Aptos Solar — datasheet Built for Safety.
Aptos Solar — datasheet Built for Safety.
Aptos Solar — datasheet Built for Safety.
Aptos Solar — document library on the manufacturer’s website (links above).
NLR (formerly NREL) — System Advisor Model CEC inverter library (version 2026.7.3).
NLR (formerly NREL) — PVWatts v8, NSRDB PSM v3 typical-year weather for Los Angeles, Palmdale, Riverside, Santa Clarita, Chula Vista, Huntington Beach.
California Energy Commission — PV Module List (module electrical data for the compatibility check).
Building permits — Southern California permit portals. Equipment matched from permit descriptions.
Cali-Graf calculations — formulas and inputs are shown next to each calculated value (efficiency from area, temperature-corrected voltages, string sizing, energy estimates).