SolarEdge SE33.3K
Designed for commercial and utility-scale solar installations, this high-performance string inverter delivers exceptional power conversion with 33.3kW nominal capacity. Its advanced engineering achieves remarkable 98.3% maximum efficiency, ensuring minimal energy loss during DC to AC conversion. The robust three-phase output configuration at 277/480V makes it ideal for industrial applications and large commercial projects.
Built to withstand demanding outdoor conditions, the inverter features NEMA 3R protection rating while maintaining a relatively compact profile at 37.5kg. The single MPPT channel design with 480V maximum DC input voltage provides reliable performance for string configurations. SolarEdge's Israeli engineering expertise shines through in the pure sine wave output quality, making this inverter a dependable choice for professional installers seeking proven technology for substantial solar arrays.
Technical Specifications
| Nominal AC Power | 33300 W |
| Maximum AC Power | 33300 W |
| Maximum Efficiency | 98.3 % |
| Maximum DC Input Voltage | 480 V |
| Number of MPPT Channels | 1 |
| AC Output Voltage | 277/480 V |
| Output Wave Type | Pure Sine Wave |
| Weight | 37.5 kg |
| Enclosure Protection Rating | NEMA 3R |
| Inverter Type | String Inverter |
| Number of Phases | 3 |
Frequently asked questions
What size installation is the SolarEdge SE33.3K meant for?
The SolarEdge SE33.3K is a three-phase string inverter rated at 33300 W nominal AC power, with the same 33300 W as its maximum, which puts it in commercial territory: warehouse, school or light industrial roofs of roughly 33 kW and upward once the DC side is oversized. It is not a residential unit.
How many MPPT inputs does the SolarEdge SE33.3K have?
The SolarEdge SE33.3K lists a single MPPT channel together with a maximum DC input voltage of 480 V, which is low for a 33.3 kW inverter. All DC arrives at one tracking input, so every string feeding the SE33.3K must be built alike and share a single operating point across the whole array.
What AC voltage does the SolarEdge SE33.3K connect to?
The SolarEdge SE33.3K has an AC output listed as 277/480 V three-phase: those are the line-to-neutral and line-to-line values of a 480 V wye service, common in North American commercial buildings. A site on a different three-phase voltage would need a transformer, so confirm the service voltage before specifying the SE33.3K.
How efficient is the SolarEdge SE33.3K?
The SolarEdge SE33.3K is rated at 98.3 percent maximum efficiency. On an array matched to its 33300 W that leaves under two percent of the DC energy lost in conversion at the best operating point, and those losses leave the inverter as heat, so a mounting position with free airflow is worth planning.
How much does the SolarEdge SE33.3K weigh to install?
The SolarEdge SE33.3K weighs 37.5 kg, which makes it a two-person lift onto its bracket and rules out lightweight fixings. On commercial roofs the mounting structure and the access route have to be planned for that mass, particularly where the SE33.3K goes on a plant-room wall rather than at ground level.
Is the SolarEdge SE33.3K rated for outdoor installation?
The SolarEdge SE33.3K carries a NEMA 3R enclosure rating, the North American classification for outdoor use against rain, sleet and falling dirt, so mounting it outside is within its stated rating. Its output is a pure sine wave, as grid-tied operation onto a 480 V three-phase supply requires.
Guides that cover this model
Source: www.solaredge.com