SolarEdge S440 Power Optimizer – 440W Module-Level Power Optimizer for Residential SolarThe SolarEdge S440 is a high-performance S-Series Power Optimizer designed for residential PV systems. It connects to each solar module, turning every panel into a smart, independently optimized unit that maximizes energy production even in shaded, mismatched, or differently oriented conditions.With support for modules up to 440W, the S440 is ideal for modern high-efficiency residential solar panels. It delivers module-level MPPT (Maximum Power Point Tracking), panel-level monitoring, and enhanced safety features — all while maintaining compatibility with SolarEdge single-phase and three-phase inverters.Key Features and Benefits Rated Input Power: 440W (modules with up to 5% tolerance allowed) Maximum Efficiency: 99.5% (weighted efficiency 98.8%) MPPT Operating Range: 8 – 60 Vdc Absolute Max Input Voltage (Voc): 60 Vdc Maximum Short Circuit Current (Isc): 14.5 A – supports most current high-power residential modules Sense Connect Technology – advanced arc-fault detection and automatic shutdown for improved system safety Simplified Wiring – shorter input cables and optimized output cable design (long positive, short negative) reduce clutter on the roof Compact & Lightweight – Dimensions: 129 × 155 × 30 mm | Weight: ~655 g (including cables) 100% Panel-Level Monitoring – Track performance of every single module via the SolarEdge app or monitoring platform Enhanced Safety – Reduces DC voltage to 1V per optimizer in standby or when the inverter is off (SafeDC™)Superior Energy HarvestUnlike traditional string inverters, the SolarEdge S440 mitigates power losses from shading, soiling, manufacturing tolerances, and module mismatch. This results in significantly higher system yield — often 2–25% more energy compared to non-optimized systems.The S440 works seamlessly with SolarEdge Home Hub hybrid inverters (including the USE11400H-USSKBEZ8) and is fully compatible with the SolarEdge ecosystem for easy integration of battery storage and EV charging.Ideal Applications Residential rooftop solar installations Systems with complex roof layouts, multiple orientations, or partial shading New installations or retrofits adding optimizers to existing SolarEdge setupsAvailable Now at Sun Supply PVStock up on the SolarEdge S440 Power Optimizer at competitive pricing. Pair it with SolarEdge inverters, Powerwall-compatible systems, or high-efficiency modules (such as REC Alpha Pure-RX or Hyundai bifacial panels) for a complete, high-performance residential solar solution.Technical SpecificationsSpecificationDetailsModelS440Rated Input DC Power440W (modules with up to 5% tolerance allowed)Maximum Input Power462WMPPT Voltage Range8 – 60 VdcMaximum Input Voltage (Voc)60 VdcMaximum Input Current (Isc)14.5 AMaximum Output Voltage60 VdcMaximum Output Current15 AWeighted Efficiency98.8%Peak Efficiency99.5%Maximum DC String Voltage1,000 VdcSense Connect TechnologyYes – Advanced arc-fault detectionSafeDC™ FeatureYes – Reduces voltage to 1V per optimizerModule-Level MonitoringYes – 100% real-time panel monitoringOperating Temperature Range-40°C to 85°C (-40°F to 185°F)Protection RatingIP68 / NEMA 6PDimensions (W x L x H)129 × 155 × 30 mm (5.1 × 6.1 × 1.2 in)Weight655 g (1.44 lbs)Input Cable Length0.16 m (positive & negative)Output Cable Length1.2 m (positive) / 0.16 m (negative)ConnectorsMC4 compatibleCompatibilitySolarEdge Home Hub Inverters & Single Phase InvertersWarranty25 years
