3-Phase Monitor Kit for Light Commercial Models; VAC: 190-600, Weight: 1 lb 8 oz, Verifies the Phase Balance and Out of Balance Shuts Down the Unit, *Out of Balance Refers to the Phasing Being Out of Sequence or Loss of Line Voltage Leg* ***Includes: (1)Phase Monitor, (1)Power Harness 3-6 Ton, (1)Power Harness 7.5-20 Ton, (1)Power Harness 25 Ton, (1)Low Voltage Harness 3-5 Ton, (1)Low Voltage Harness 6 Ton, (1)Low Voltage Harness 7.5-12.5 Ton, (1)Low Voltage Harness 15-20 Ton, (1)Low Voltage Harness 25 Ton