Able to be used on every part of industrial installations, Model LT300 carries Cat IV, 300 V rating as defined by IEC 61010-1. Three-phase safe design protects instrument against damage and user against potential injury if attempt is accidentally made to carry out tests on live circuit. Suitable for single-phase and phase-to-phase testing, instrument uses test current of 30 mA and offers choice of 2 loop impedance ranges: 0 to 20 and 0 to 200 ohms, with respective resolution of 0.01 and 0.1 ohm.