Amprobe ALC-110 [4930876] Leakage Current Clamp. Prevent unplanned downtime by detecting leakage currents with the Amprobe ALC-110 Leakage Current Clamp. Rated CAT III 600 V to ensure electrical safety, the ALC110 is designed to resist external magnetic fields for highly accurate readings. Features TRMS, a mechanical jaw lock, max readings and hold functions, highest resolution of 0.001 mA (measure up to 60 A), broad frequency range (15 Hz to 1 kHz), selectable filters (low pass, appliance, no filter), selectable limits (0.25 mA, 0.5 mA, 3.5 mA, 10 mA, 12 mA) and a battery-saving design.