Illustration · 132 half-cut cells

Solar panelCanadian Solar

Canadian Solar CS3N-395MS {Blk}

Name: Canadian Solar CS3N-395MS {Blk}
Brand: Canadian Solar

132 half-cut cells, PERC. Power classes 375–430 W in the CEC list; datasheet covers 400–425 W.

CEC listed · Feb 22, 2021UL 61730PVEL Top Performer 2023PERCInstalled in 46 SoCal permits

Power class

Power (STC)395 Wtolerance +10 / −0 W
Efficiency≈20.1%calculated from area
%/°C Pmax−0.34CEC test: −0.342
Degradation / yr0.55%after year 1 (warranty)

Power classes

CEC PV Module List (Oct 7, 2026) · Cali-Graf calculation · Canadian Solar datasheet · 20 models

Model	Pmax	Voc, V	Isc, A	Vmp, V	Imp, A	Efficiency	PTC	CEC listed
CS3N-375MS {Blk}	375 W	43.50	11.20	36.20	10.36	≈19.0%	350 W	Dec 21, 2021
CS3N-375MS {Wht}	375 W	43.50	11.20	36.20	10.36	≈19.0%	350 W	Jul 1, 2021
CS3N-380MS {Blk}	380 W	43.70	11.26	36.40	10.44	≈19.3%	355 W	Dec 21, 2021
CS3N-380MS {Wht}	380 W	43.70	11.26	36.40	10.44	≈19.3%	355 W	Jul 1, 2021
CS3N-385MS {Blk}	385 W	43.90	11.32	36.60	10.52	≈19.5%	360 W	Dec 21, 2021
CS3N-385MS {Wht}	385 W	43.90	11.32	36.60	10.52	≈19.5%	360 W	Apr 1, 2021
CS3N-390MS {Blk}	390 W	44.10	11.38	36.80	10.60	≈19.8%	364 W	Dec 21, 2021
CS3N-390MS {Wht}	390 W	44.10	11.38	36.80	10.60	≈19.8%	364 W	Apr 1, 2021
CS3N-395MS {Blk}	395 W	44.30	11.44	37.00	10.68	≈20.1%	369 W	Dec 21, 2021
CS3N-395MS {Wht}	395 W	44.30	11.44	37.00	10.68	≈20.1%	369 W	Apr 1, 2021
CS3N-400MS {Blk}	400 W	44.50	11.50	37.20	10.76	≥19.7%	374 W	Dec 21, 2021
CS3N-400MS {Wht}	400 W	44.50	11.50	37.20	10.76	≥19.7%	374 W	Feb 22, 2021
CS3N-405MS {Blk}	405 W	44.70	11.56	37.40	10.83	≥19.9%	379 W	Dec 21, 2021
CS3N-405MS {Wht}	405 W	44.70	11.56	37.40	10.83	≥19.9%	379 W	Feb 22, 2021
CS3N-410MS {Blk}	410 W	44.90	11.62	37.60	10.92	≥20.2%	384 W	Dec 21, 2021
CS3N-410MS {Wht}	410 W	44.90	11.62	37.60	10.92	≥20.2%	383 W	Feb 22, 2021
CS3N-415MS	415 W	45.10	11.68	37.80	10.98	≥20.4%	388 W	Feb 22, 2021
CS3N-420MS	420 W	45.30	11.74	38.00	11.06	≥20.7%	393 W	Feb 22, 2021
CS3N-425MS	425 W	45.50	11.80	38.20	11.13	≥20.9%	398 W	Feb 22, 2021
CS3N-430MS	430 W	45.70	11.86	38.40	11.20	≈21.8%	403 W	Jul 1, 2021

≈ efficiency = Pmax ÷ CEC-listed area 1.97 m² for classes outside the datasheet.

CEC note: Formerly listed under Canadian Solar Inc.

Build & dimensions

CEC PV Module List (Oct 7, 2026) · Canadian Solar datasheets

Module area1.97 m² (21.2 ft²)CEC-listed area
Weight49.6 lb (22.5 kg)
Cells132 half-cut cellsPERC
Front glass3.2 mm tempered glass
Back coverBlack backsheet
FrameAnodized aluminium alloy
Junction boxIP68, 3 bypass diodes
Cable / connector4 mm2 (IEC), 12 AWG (UL) · T4 series, MC4 or MC4-EVO2

Heat & cold behaviour

Canadian Solar datasheet · CEC PV Module List (Oct 7, 2026) · Cali-Graf calculation

	Datasheet	CEC listing test
Pmax coefficient γ	−0.34 %/°C	−0.342 %/°C
Voc coefficient β	−0.26 %/°C	−0.309 %/°C
Isc coefficient α	+0.05 %/°C	+0.052 %/°C
Vmp coefficient	≈ −0.39 %/°C	—
Operating cell temperature	NMOT 41 ± 3 °C	NOCT 44.9 °C

Vmp coefficient ≈ γ − α (datasheet); used only for the hot-roof voltage estimate.

At normal operating conditions (NMOT, 800 W/m²) — datasheet

Class	Pmax, W	Voc, V	Isc, A	Vmp, V	Imp, A
400 W	300.0	42.10	9.27	34.90	8.60
400 W	300.0	42.10	9.27	34.90	8.60
405 W	304.0	42.30	9.32	35.10	8.66
405 W	304.0	42.30	9.32	35.10	8.66
410 W	308.0	42.40	9.37	35.20	8.73
410 W	308.0	42.40	9.37	35.20	8.73
415 W	311.0	42.60	9.42	35.40	8.78
420 W	315.0	42.80	9.47	35.60	8.84
425 W	319.0	43.00	9.51	35.80	8.90

Away from lab conditions — CEC listing test points

Class	Pmax at NOCT	Vmp × Imp at NOCT	Pmax at 200 W/m²	Low-light efficiency vs STC
375 W	282.1 W	34.36 V × 8.21 A	73.2 W	98%
375 W	283 W	34.13 V × 8.29 A	73.4 W	98%
380 W	285.9 W	34.55 V × 8.27 A	74.2 W	98%
380 W	286.8 W	34.32 V × 8.36 A	74.4 W	98%
385 W	289.6 W	34.74 V × 8.34 A	75.2 W	98%
385 W	290.5 W	34.51 V × 8.42 A	75.5 W	98%
390 W	293.4 W	34.93 V × 8.4 A	76.2 W	98%
390 W	294.3 W	34.69 V × 8.48 A	76.5 W	98%
395 W	297.3 W	35.12 V × 8.46 A	77.2 W	98%
395 W	298.2 W	34.88 V × 8.55 A	77.5 W	98%
400 W	301.1 W	35.31 V × 8.53 A	78.2 W	98%
400 W	302 W	35.07 V × 8.61 A	78.5 W	98%
405 W	304.7 W	35.5 V × 8.58 A	79.1 W	98%
405 W	305.6 W	35.26 V × 8.67 A	79.4 W	98%
410 W	308.9 W	35.69 V × 8.65 A	80.2 W	98%
410 W	309.8 W	35.45 V × 8.74 A	80.4 W	98%
415 W	313.2 W	35.64 V × 8.79 A	81.4 W	98%
420 W	317.1 W	35.83 V × 8.85 A	82.4 W	98%
425 W	320.8 W	36.01 V × 8.91 A	83.4 W	98%
430 W	324.5 W	36.2 V × 8.96 A	84.2 W	98%

Pmax = Vmp × Imp from the CEC listing; low-light efficiency = Pmax at 200 W/m² ÷ (20% of STC Pmax).

Electrical & strength ratings

Max system voltage1,500 V
Max series fuse20 A
Fire rating (UL 61730)Class C
Module temperature−40 °F to +185 °F−40 °C to +85 °C
Power tolerance+10 / −0 W

Certifications

CEC PV Module List (Oct 7, 2026) · Canadian Solar datasheets

UL 61730IEC 61215IEC 61730IEC 61701IEC 62716MCSFire rating Class C (UL 61730)ISO 14001ISO 45001ISO 9001

UL 61730CEC listing
IEC 61215datasheet
IEC 61730datasheet
IEC 61701datasheet
IEC 62716datasheet
MCSdatasheet
Fire rating Class C (UL 61730)datasheet
ISO 14001factory, datasheet
ISO 45001factory, datasheet
ISO 9001factory, datasheet

Warranty & degradation

Canadian Solar datasheet

Product warranty25 years
Year 1≥ 98%
Then≤ 0.55% / year

Independent reliability testing

Kiwa PVEL Scorecard · RETC PV Module Index

2023

PVEL Top Performer

this series

Tests passed as Top Performer

DH, LID+LETID, MSS, PID, TC

PVEL Scorecards

Canadian Solar named Top Performer, 2020–2026

RETC PV Module Index

Canadian Solar, 2025

PVEL Top Performer tests

Year	Product	Tests
2023	CS3N-xxxMS	DHLID+LETIDMSSPIDTC

Tested bill of materials

PVEL-tested factoryThailand
Cell technology (tested BOM)p-type PERC
Module design (tested BOM)monofacial - glass//backsheet
Power class range tested380-425W

Details describe the tested sample, not every module of the series.

RETC PV Module Index — Canadian Solar

Year	Recognition
2025	Reliability High Achiever

Inverter compatibility & string sizing

Canadian Solar datasheet · Cali-Graf calculation · NLR PVWatts v8 · CEC PV Module List (Oct 7, 2026) · inverter datasheets · NLR SAM inverter library · CEC Grid Support Inverter List (Oct 7, 2026)

CityColdest air, °CHottest cell, °CString inverter

46.9 V

Voc when cold

per panel

29.9 V

Vmp when hot

per panel

Max panels / string

max DC 600 V

Min panels / string

MPPT from 60 V

Defaults come from NLR TMY weather (coldest hour, hottest modeled cell). Code calculations (NEC 690.7) use the ASHRAE extreme annual minimum, which is usually colder — enter it above.

String inverters most named in SoCal permits

Inverter	Max DC input	MPPT	Window source	Panels per string
Tesla 1538000-xx-y	600 V	60–480 V	datasheet	3–12
Solis (Ginlong) S6-EH1P10K-H-US	600 V	80–520 V	datasheet	3–12
Solis (Ginlong) Solis-1P7.6K-4G-US	600 V	100–500 V	datasheet	4–12
Qcells Q.VOLT H7.6SX	498 V	234–498 V	CEC test window	8–10

Microinverters (one per panel)

Microinverter	Recommended module power	Max DC input	MPPT	Voc cold / Vmp hot	Check	DC/AC
Enphase IQ8PLUS-72-2-US	235–440 W	60 V	29–45 V	46.9 / 29.9 V	✓ Within range	1.36
Enphase IQ8X-80-M-US	320–540 W	79.5 V	43–60 V	46.9 / 29.9 V	✗ Not a match: module voltage below MPPT range	1.04
APsystems (Alt Power System) DS3-L	265–570 W	60 V	28–45 V	46.9 / 29.9 V	✓ Within range	0.51
Enphase IQ8M-72-2-US	260–460 W	60 V	30–45 V	46.9 / 29.9 V	⚠ Works; below MPPT at peak heat	1.22
Enphase IQ8A-72-2-US	295–500 W	60 V	32–45 V	46.9 / 29.9 V	⚠ Works; below MPPT at peak heat	1.13

Voltage check against the microinverter datasheets — confirm the pairing on the manufacturer’s module compatibility list. Rows appear only when the panel’s power is inside the microinverter’s recommended module power range.

SolarEdge and other optimizer-based systems size strings by the optimizer rules — use the manufacturer’s designer. Reference inverters: most named in SoCal permits since Oct 2024.

Expected production in Southern California

NLR PVWatts v8 · Cali-Graf calculation

PanelsCity for chartSystem size

City	kWh / kW / yr	kWh / panel / yr	kWh / system / yr	Sun, kWh/m²/day
Los Angeles	1,676	662	11,916	6.08
Palmdale	1,835	725	13,047	6.69
Chula Vista	1,696	670	12,059	6.11
Huntington Beach	1,643	649	11,682	5.89
Riverside	1,696	670	12,059	6.21
Santa Clarita	1,724	681	12,258	6.28

Estimate for comparison, not a quote: shading, roof orientation and local losses change real output. Roof mount, 20° tilt, south, 14% system losses.

Who installs CS3N-xxxMS panels in SoCal

building permits · CSLB License Master

Permits naming this series

Nov 2021 – Jul 2026

Licensed installers

CSLB license on the permit

Jurisdictions so far

LA County (unincorp.) (43), Palmdale (2), Los Angeles (1)

Indigo Solar

Corona · CSLB #1086834

1 installSep 2024Palmdale

Mega Solar Inc

Woodland Hills · CSLB #984972

1 installJul 2022Los Angeles

Myers Electric Company Inc

Colton · CSLB #972274

1 installJul 2026Palmdale

Permits over time

Power class named in permit

395 W

390 W

400 W

420 W

Top ZIP codes

ZIP 917225
ZIP 917455
ZIP 910015
ZIP 917024
ZIP 935434
ZIP 917463
ZIP 907132
ZIP 917442
Other ZIP codes14

Typical system

median 7 kW, 16 panels (n = 38)

Only installer and ZIP level is shown — no homeowner names, street addresses or permit numbers. Permits from LA County (unincorp.) come without a contractor license, so they count toward totals but not toward installers. Counts grow as more permit portals are loaded.

Installed together with

building permits

Microinverters

Enphase IQ8+

Enphase IQ7+

Inverters

SolarEdge SE…H (HD-Wave)

Optimizers

SolarEdge Power Optimizer

Batteries

SolarEdge Home Battery

Tesla Powerwall 3

Number of permits naming both this panel series and the product; 42 of 46 permits list other equipment.

Compare with similar 395 W panels

CEC PV Module List (Oct 7, 2026) · Qcells datasheet · Kiwa PVEL Scorecard · building permits

Panel	Pmax	Efficiency	γ Pmax (CEC)	Voc, V	Isc, A	PVEL (product / brand)	SoCal permits (series)
Canadian Solar CS3N-395MS {Blk}	395 W	≈20.1%	−0.342	44.3	11.44	product 2023	46
Qcells Q.PEAK DUO BLK ML-G10+ 395	395 W	≥20.1%	−0.362	45.27	11.1	product 2022, 2023	221
JA Solar JAM54S31-395/MR	395 W	≈20.8%	−0.329	36.98	13.7	product 2023, 2024	152
REC Group REC395AA Pure	395 W	≈22%	−0.256	48.7	10.2	brand 9× (2016–2025)	66

Same fields from the same sources for every row; ≈ efficiency is calculated from the listed area. Comparable series: other brands, same product group, power range covering this class.

About Canadian Solar

CEC PV Module List (Oct 7, 2026) · Kiwa PVEL Scorecard · RETC PV Module Index · building permits

ManufacturerCanadian Solar
Listed in CEC asCSI Energy Storage Co., Ltd., CSI Solar Co., Ltd., Canadian Solar
Websitecanadiansolar.com
PVEL Top Performer (manufacturer)5 Scorecards (2020–2026)
RETC PV Module Index2025
Current panel series in CEC list38

Other series by SoCal permits

CS6R-xxxMS-HL · 46CS6.1-54TM-xxxH · 9CS1Y-xxxMS · 6CS3W-xxxMS · 6CS3W-xxxMB-AG · 5CS7N-xxxMB-AG · 2

Questions & answers

How efficient is the Canadian Solar CS3N-395MS {Blk}?

Calculated from the panel area (1.97 m²): about 20.1% for the 395 W class. 395 W over 1.97 m² equals about 201 W per square meter.

How much energy does one panel produce in Los Angeles or Palmdale?

PVWatts v8 with typical-year weather gives about 662 kWh per year per 395 W panel in Los Angeles and about 725 kWh in Palmdale (20° roof, facing south, 14% system losses).

How much power does it lose on a hot roof?

With γ = −0.34 %/°C, at a 77 °C cell temperature (hottest modeled hour in Palmdale) output is about 17.6% below the STC rating.

How many panels fit on one string?

With the Tesla 1538000-xx-y (max DC 600 V, MPPT from 60 V, datasheet) in Los Angeles the calculator gives 3–12 panels per string (Voc at 2 °C = 46.9 V, Vmp at 74 °C cell = 29.9 V). Final design must follow the inverter manual and NEC 690.7.

Does it work with Enphase IQ8PLUS-72-2-US microinverters?

Voltage check against the Enphase datasheet: Voc when cold 46.9 V vs max input 60 V; Vmp when hot 29.9 V vs MPPT low 29 V; recommended module power 235–440 W. Confirm on the microinverter maker’s compatibility list.

What does the warranty cover?

25 years on the product (manufacturer datasheet).

Has this panel been reliability-tested?

CS3N-xxxMS was a PVEL Top Performer in 2023 (DH, LID+LETID, MSS, PID, TC).

What fire rating does it have?

UL 61730 fire rating Class C per datasheet.

Sources

California Energy Commission — Solar Equipment Lists, PV Module List, Inverter List (snapshot Oct 7, 2026).
Canadian Solar — manufacturer datasheet “HiKu Mono PERC CS3N-400|405|410|415|420|425MS MORE POWER”.
Canadian Solar — manufacturer datasheet “Preliminary Technical Information Sheet HiKu Mono” (preliminary).
Qcells — manufacturer datasheet “Q.PEAK DUO BLK ML-G10+ ENDURING HIGH PERFORMANCE”.
Kiwa PVEL — PV Module Reliability Scorecard, Top Performer lists 2020–2026.
RETC — PV Module Index report.
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, Chula Vista, Huntington Beach, Riverside, Santa Clarita.
Inverter datasheets — APsystems (Alt Power System), Enphase, Solis (Ginlong), Tesla (manufacturer documents).
Building permits — Los Angeles County Public Works (EPIC-LA, unincorporated areas) (Nov 2021 – May 2025); City of Palmdale (Sep 2024 – Jul 2026); LADBS, City of Los Angeles (Jul 2022). Equipment matched from permit descriptions by model number.
Contractors State License Board — License Master (contractor names and license status), as of Oct 5, 2026.
Cali-Graf calculations — formulas and inputs are shown next to each calculated value (efficiency from area, temperature-corrected voltages, string sizing, energy estimates).