Solar PV Sector

Microinverter-300/400/500-S/SW

Solar PV Sector

Microinverter-300/400/500-S/SW

Overview

PV system generates power during the daytime and is used for self-use. Surplus electricity is connected to the grid to reduce residential electricity bills. PV system does not generate power at night and uses the power from the grid to supply residential loads.

Highlights

Low-voltage operation below 60V, it is safer to apply to roof power stations
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Reliable

Low-voltage operation below 60V, it is safer to apply to roof power stations; Built-in relay, which detects physical disconnection; IP67 degree of protection, adaptable to diverse scenarios
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Simple

Hook type design; Easy expansion, plug-and-play
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Efficient

Module-level MPPT, output power up to 500 VA; 16A max. input current, compatible with major 182/210 modules; 20V start-up voltage, earlier start & later stop; 150% DC oversizing, minimizing the cost of electricity
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Intelligent

Support Sub-1G & WiFi communication; Module-level monitoring; Remote software upgrade, parameter configuration, alarm fault analysis

Technical Parameter

Product ModelM300-S
M300-SW
M400-S
M400-SW
M500-S
M500-SW
Input (DC)
Typical Module Compatibility (W)240 – 450+320 – 600+400 – 670+
Min./Max. MPPT Voltage (V)16 – 6016 – 6016 – 60
Max. Input Voltage (V)656565
Start-up Input Voltage (V)202020
Max. Input Current (A)161616
Max. Short-circuit DC Input Current (A)202020
Output (AC)
Nominal Output Power (VA)300400500
Nominal Output Current (A)1.36 / 1.30 / 1.251.82 / 1.74 / 1.672.27 / 2.17 / 2.08
Nominal Output Voltage (V)220 / 230 / 240220 / 230 / 240220 / 230 / 240
Adjustable Output Voltage Range (V)183 – 276183 – 276183 – 276
Nominal Frequency (Hz)50 / 6050 / 6050 / 60
Adjustable Output 
Frequency Range (Hz)
45 – 55, 55 – 6545 – 55, 55 – 6545 – 55, 55 – 65
Power Factor (default / adjustable)>0.99 / 0.8 leading…0.8 lagging
THDi< 3%
Max. Units Per 10AWG Branch29 / 30 / 3221 / 22 / 2317 / 18 / 19
Max. Units Per 12AWG Branch22 / 23 / 2416 / 17 / 1713 / 13 / 14
Efficiency
Peak Efficiency96.70%96.70%96.70%
Nominal MPPT Efficiency99.80%99.80%99.80%
Night-time Power Loss (mW)<30<30<30
General Data
Operating Ambient Temperature (℃)– 40 to + 65– 40 to + 65– 40 to + 65
Dimensions (W*H*D mm)188*178*25188*178*25188*178*25
Degree of ProtectionIP67IP67IP67
CoolingNatural Cooling – No fans
Weight (kg)1.71.71.7
Features
Communication 1Sub-1G
Built-in WiFi
Sub-1G
Built-in WiFi
Sub-1G
Built-in WiFi
Type of IsolationHigh-frequency 
transformers
Galvanically isolated
Warranty12 years standard
25 years optional
Protection
Input Reverse Connection ProtectionYesYesYes
Output Overcurrent ProtectionYesYesYes
Output Overvoltage ProtectionYesYesYes
Anti-islanding ProtectionYesYesYes
Output Short-circuit ProtectionYesYesYes
1: Sub-1G: M300/400/500-S, Built-in WiFi: M300/400/500-SW

Design and specifications are subject to change without notice.

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