Below are products which have similar functionality to the PS231
A mobile load bank to provide balanced and unbalanced three-phase loads and single-phase loads with variable leading or lagging power factors.
A portable capacitive load bank comprising 12 individual switched load capacitances arranged in 3 banks of 4 for Star or Delta connection.
A portable inductive load bank comprising 12 individual switched load inductances arranged in 3 banks of 4 for Star or Delta connection.