Cali-Graf in Southern California

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MicroinverterPower Center

Power Center D400-M1A-240A

Microinverter. 2 models, 350 W–400 W AC at 240 V.

UL 1741 SBCEC listed · Feb 3, 2025

Model

Rated AC power400 W
CEC weighted efficiency96.5%

Models & power ratings

CEC Grid Support Inverter List (Oct 7, 2026) · NLR SAM inverter library · 2 models

Model	Nominal AC	Grid voltage	CEC continuous	Rated AC (SAM)	CEC weighted eff.	DC test window	CEC listed	UL 1741 SB
D350-M1A-240A	350 W	240 V	346 W	346 W	96.5%	22–55 V	Feb 3, 2025	SB
D400-M1A-240A	400 W	240 V	398 W	398 W	96.5%	22–55 V	Feb 3, 2025	SB

DC input (PV side)

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

CEC test DC voltages (min / nom / max)22 / 35 / 55 V
DC input at rated output (CEC test)413 W

Efficiency

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

CEC weighted efficiency96.5%
Night-time standby (tare)0.3 W
Power to start converting2.3 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)

UL 1741 SB (3rd ed.)Yes — Intertek, certificate Nov 14, 2024
UL 1741 SA (SA8–SA13)Yes — Intertek
Firmware tested (SA)4200
Volt-VAr with reactive power priority (SA13)Yes
Freq-Watt / Volt-Watt (SA14–15)Yes
Disable permit service / limit active power (SA17–18)Yes
CSIP (IEEE 2030.5) conformanceVia gateway during testing (Y*)
Monitor key data & scheduling (Rule 21 Phase 3)Yes (attested Feb 3, 2025)
CEC listedFeb 3, 2025

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

Panel compatibility & string sizing

NLR SAM inverter library · NLR PVWatts v8 · CEC PV Module List · Cali-Graf calculation

CityColdest air, °CHottest cell, °C

D400-M1A-240A: max DC 55 V · MPPT 22–55 V (CEC test window)

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	1.03	—
Qcells Q.PEAK DUO BLK ML-G10+ 410	410 W	48.1 / 30.6 V	✓ Within range	1.03	—
LONGi LR5-54HABB-400M	400 W	39.3 / 25.3 V	✓ Within range	1.01	—
JA Solar JAM54S31-405/MR	405 W	39.4 / 25.5 V	✓ Within range	1.02	—
Hyundai Solutions HiN-T440NF(BK)	440 W	40.9 / 27 V	✓ Within range	1.11	—
Silfab Solar SIL-440QD	440 W	41.1 / 28 V	✓ Within range	1.11	—
Qcells Q.TRON BLK M-G2+ 430	430 W	41.3 / 28 V	✓ Within range	1.08	—
Qcells Q.TRON BLK M-G2.H+ 430	430 W	41.3 / 28 V	✓ Within range	1.08	—
REC Group REC460AA Pure-RX	460 W	68.8 / 47.1 V	✗ Cold Voc above max input	1.16	—
Elin (Sirius PV) ELNSM54M-HC-410	410 W	39.3 / 25.3 V	✓ Within range	1.03	—
Qcells Q.TRON BLK M-G2.C+ 430	430 W	41.3 / 28 V	✓ Within range	1.08	—
Tesla TSP-420	420 W	43.4 / 27.7 V	✓ Within range	1.06	—

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 400 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
Power Center Dxxx-M1A-240A	350 W–400 W	96.5%	22–55 V	Yes	2025	0
Enphase Energy IQ8 Series	240 W–633 W	97.5%	25–95 V	44 of 45	2025	1,104
Enphase Energy IQ7 Series	190 W–384 W	97.5%	22–64 V	114 of 119	2022	471
Hoymiles HM-xxxNT	295 W–1.44 kW	96.5%	29–48 V	11 of 12	2023	3
Enphase Energy IQ9 Series	405 W–440 W	97.5%	28–45 V	Yes	2026	—

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

About Power Center

CEC Grid Support Inverter List (Oct 7, 2026)

ManufacturerPower Center
Listed in CEC asPower Center
Websiteduracellpowercenter.com
Models on CEC lists49

Other series

Dxxx-M2 · 2 permitsDxxx-M1A-208ADxxx-M2A-208ADxxx-M2A-240ADxxx-M1Dxxxx-M4

Questions & answers

How efficient is the Power Center Dxxx-M1A-240A?

The California Energy Commission lists a weighted efficiency of 96.5% for Power Center Dxxx-M1A-240A models, measured at six power levels and three DC voltages.

What sizes does the Power Center Dxxx-M1A-240A come in?

The CEC list includes 2 models from 350 W to 400 W AC: D350-M1A-240A, D400-M1A-240A.

Is the Power Center Dxxx-M1A-240A certified to UL 1741 SB?

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

What is the D400-M1A-240A’s DC input voltage range?

CEC tested it at 22–55 V DC.

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.
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).