This high-voltage jack is designed exclusively for use with Cal Test's Long-Reach High Voltage Test Leads, models CT3018 and CT3020. It operates safely up to 5 kV in non-category environments and can withstand transient overvoltages up to 2 kV. Additionally, the jack extends the voltage rating of 4mm sheathed banana jacks to 1,000 V CAT IV. It features an M3 threaded connection hole and is suitable for mounting in both plastic and metal panels using a 14.5 mm hex panel nut.