The GUS3 is a surge suppressor unit specifically engineered for use with AC contactors and reversing contactors. It operates on an AC rating of 200-240V and utilizes an internal Varistor+RC circuit to effectively mitigate voltage surges. This unit is designed for compatibility with GC-9 to GC-95 series contactors. It features a rated insulation voltage of 1000V AC and can withstand an impulse voltage of up to 8kV. With an IP20 degree of protection, the GUS3 provides reliable overvoltage protection in industrial control systems.