Find Exposed Wires with Insulation Tester


Ideal for use in the telecommunications industry, the MIT410-TC/3 helps identify problems that can arise from exposed wire in services ranging from voice and video to data or VoIP. 


This handheld unit, which offers test ranges up to 100 GΩ and test voltages to 500 V, is an enhanced replacement of MIT410-TC/2.  It provides feedback-controlled test voltages limiting over-voltage to 2%, far below the accepted industry standard of +20%, delivering a more accurate test voltage to circuits or components without the risk of over-voltage damage.


The unit can be used for all metallic and resistive fault testing of inside premise wiring to identify shorts, grounds, cross voltage in multi-lines, as well as voltage measurements in both AC and DC to determine proper levels for line and signaling voltages. 


The tester offers a stabilized test voltage to ensure it remains within tolerance to industry/regulatory standards, as well as a single resistance range with significantly faster continuity testing spanning from 0.01 Ω to 1.0 MΩ.  Continuity test currents from 200 mA or 20 mA are available.


The MIT410-TC/3 features a dual digital readout that displays complementary test information simultaneously.  A digital and analog arc display includes both a digital readout and Megger’s patented analog arc to replicate the response of a moving coil display.  The unit provides TRMS measurements for accurate measurements on noisy lines.


This CAT IV 600 V rated instrument offers greater safety when testing at higher voltage levels.  Each tester includes live circuit detection and protection and a fuse warning that detects fuse failure automatically.  The instrument is over-molded for increased protection and sealed to IP54, providing a weatherproof case to decrease the chances of water ingress.


The MIT410-TC/3 comes in a soft canvas carrying case with shoulder strap and rugged snap hook to attach to a tool belt. A bed of nails lead set is included with the instrument. It features a 6 cell battery compartment with separate fuse access.

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