SolarEdge SE120K-RW08IBNM4 Synergy inverter with 3 Synergy Units120kW Synergy inverter for 480/277V grids, manager and three units

Overview

This set comprises the SE120K-RW08IBNM4 Synergy Manager and three Synergy Units, forming SolarEdge's 120kW three-phase Synergy inverter. Unlike the 400V models, it is specified for 480/277V grids with a 432–529V line-to-line range, so it suits sites with a 480V connection. It supplies 120,000W at 145A per phase and accepts up to 210kW of PV at STC, 70kW per unit, through SolarEdge commercial power optimisers. Peak efficiency is 98.1%, European weighted efficiency 98%, and each 32kg Synergy Unit keeps running if another stops.

• One Synergy Manager plus two or three Synergy Units
• 50kW to 100kW for 400V grids, SE120K for 480V
• PV array up to 175% of rated AC power
• Synergy Units keep operating if another unit stops
• Pre-commissioning before grid connection with a power bank
• Type II DC and RS485 surge protection integrated

What's in the kit

• 1 × SolarEdge SE120K-RW08IBNM4
• 3 × SolarEdge Synergy Unit

How it works

A Synergy inverter is split into a Synergy Manager, which takes the PV inputs and holds the switches, surge protection and communication, and two or three Synergy Units that perform the DC/AC conversion. The units are linked to the manager with AC, DC and communication cables, and each one operates independently, so the others keep producing if one stops. SolarEdge power optimisers on the modules provide MPPT and keep the string voltage fixed within 680–1000V.

Key features

The SE90K and SE100K use three units for 90kW and 100kW at up to 130.5A and 145A per phase on 400/230V grids; the SE120K is a 120kW version for 480/277V grids, and the two-unit SE50K is listed only for Poland and the UK. Maximum DC power is 175% of AC power, for example 175kW on the SE100K. Peak efficiency is 98.3% (98.1% for the SE120K), with built-in night-time PID mitigation, arc-fault protection and optional rapid shutdown.

Installation and compatibility

Each Synergy Unit weighs 32kg and the manager 18kg, so two people can mount the system on separate brackets using the supplied template; the structure must carry 82kg for two units or 114kg for three. The manager accepts up to 12 strings directly, or up to three arrays through a combiner box, and more than three strings per unit require 25A fuses. AC cables of up to 120mm² aluminium or copper are accepted, and AC overcurrent protection is provided by the installer.

Monitoring and settings

SetApp commissions the inverter through its Wi-Fi access point, and a pre-commissioning mode powered from a power bank checks components and wiring before the grid is connected. Two RS485 ports and Ethernet are built in, with Wi-Fi and cellular optional, and up to 31 inverters can be chained over RS485 in a leader and follower setup. Grid codes listed include CEI 0-21, CEI 0-16, VDE-AR-N 4105, VDE-AR-N 4110, EN 50549-1/-2 and G99.

Questions and answers