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In the same series:On-Grid InvertersSmall-Capacity Inverter for Solar Panel (300 W – 8 kW)

DEYE SUN-4.2K-G04 Single Phase String Inverter

Deye 4.2 kW Single-Phase String Solar Inverter SUN-4.2K-G04

4.2kW single phase string inverter with 97.5% efficiency and dual MPPT.

Authorised Deye distributor for the Middle East — certificate No. GFKFLFI1.

Deye SUN-4.2K-G04, 4.2 kW, is also searched as deye inverter.

  • Rated AC Output Active Power: 4200 W
  • Max. Efficiency: 97.5 %
  • Number of MPPTs: 2
  • Grid Connection Form: L+N+PE
AED 2,170incl. VAT

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Online datasheetDownload datasheet (PDF)

Deye 4.2 kW Single-Phase String Solar Inverter SUN-4.2K-G04 features

97.5% Efficiency

High energy conversion

Dual MPPT

Two independent trackers

80V Start-up

Low-light performance

Zero Export

Grid export management

Anti-PID

Prevents panel degradation

Multiple Comms

GPRS, WiFi, Bluetooth, 4G, LAN

About the Deye 4.2 kW Single-Phase String Solar Inverter SUN-4.2K-G04

Fan-free and quiet under 35 dB, the Deye SUN-4.2K-G04 is a 4.2 kW single-phase string inverter for a house or small workshop on an L+N+PE supply. Natural convection cooling in an IP65 case means nothing spins, so the unit can hang in a utility room or a stairwell without being heard, and at 8 kg with a 330 x 323 x 190 mm footprint one installer can mount it alone. Rated AC output is 4200 W, or 19.1 A at 220 V, with 4.62 kVA available as apparent power. Two MPP trackers carry one string each, up to 5.46 kW of modules and 550 V, and their 70-500 V window with an 80 V startup voltage brings a short east-facing string online early in the day. Efficiency peaks at 97.5%. RS485, RS232 and Wi-Fi, Bluetooth, 4G or GPRS monitoring are supported, with a stated 5-year warranty. We are an authorised Deye distributor and supply the SUN-4.2K-G04 from our own stock, with technical support before and after the sale.

Specifications last updated 24 January 2026

Deye 4.2 kW Single-Phase String Solar Inverter SUN-4.2K-G04 full specifications

Electrical

AC Output Overcurrent ProtectionYes
AC Output Overvoltage ProtectionYes
AC Output Short-Circuit ProtectionYes
AC Voltage Tolerance (×Un)0.85-1.1
Anti-Islanding ProtectionYes
Anti-PID FunctionOptional
Arc Fault Circuit Interrupter (AFCI)Optional
DC Component MonitoringYes
DC Injection Current (% of In)<0.5
DC Reverse Polarity ProtectionYes
European Efficiency97.0 %
Grid Connection FormL+N+PE
Insulation Impedance DetectionYes
Inverter TopologyNon-Isolated
Max. AC Output Apparent Power4620 VA
Max. AC Output Current21/20.1 A
Max. Efficiency97.5 %
Max. Input Short-Circuit Current19.5+19.5 A
Max. Operating PV Input Current13+13 A
Max. PV Input Power5460 W
Max. PV Input Voltage550 V
Number of MPPTs2
MPPT Efficiency>99 %
MPPT Voltage Range70-500 V
Overvoltage CategoryOVC II(DC), OVC III(AC)
Power Factor Range (Leading to Lagging)0.8-0.8
Rated AC Output Active Power4200 W
Rated AC Output Current19.1/18.3 A
Rated Grid Frequency50/45-55, 60/55-65 Hz
Rated Output Voltage220/230 V
Rated PV Input Voltage360 V
Residual Current DetectionYes
Startup Voltage80 V
Strings per MPPT1+1
Surge Protection LevelTYPE II(DC), TYPE II(AC)
Current Total Harmonic Distortion (THDi)<3 %
Virtual Synchronous Generator (VSG) SupportYes
Warranty (Years)5
Zero Export SupportYes

Mechanical

Cabinet Dimensions330 x 323 x 190 mm
Communication InterfacesRS485, RS232
DC SwitchYes
Monitoring ModesGPRS, Wi-Fi, Bluetooth, 4G, LAN (optional)
String MonitoringOptional
Weight8 kg

Environmental

Derating Start Temperature45 °C
IP RatingIP65
Noise Level<35 dB
Operating Temperature Range-25 to 65 °C
Max. Operating Altitude2000 m
Permissible Ambient Humidity0-100 %
Thermal ProtectionYes
Cooling TypeNatural Cooling

Certifications

  • IEC 61727
  • IEC 62116
  • CEI 0-21
  • EN 50549
  • NRS 097
  • RD 140
  • UNE 217002
  • G99
  • VDE-AR-N 4105
  • IEC 61000-6-1
  • EN 61000-6-1
  • IEC 61000-6-2
  • EN 61000-6-2
  • IEC 61000-6-3
  • EN 61000-6-3
  • IEC 61000-6-4
  • EN 61000-6-4
  • IEC 62109-1
  • EN 62109-1
  • IEC 62109-2
  • EN 62109-2

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