GSLC, GS Load Center for Radian Series. Includes inverter bus bars, ground bus bar, 500 Amp DC shunt assembly. The Outback Load Center is designed to work with the Radian series inverter. It comes with inverter bus bars, negative terminal bus bars (TBB), ground TBB, Neutral TBB, PV (positive) TBBs and a shunt. It also has space for AC and DC circuit breakers.