Megger MIT400 Series Industrial Digital/Analog Insulation Tester


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Manufacturer Description

The Megger MIT400 series industrial insulation tester is an insulation resistance meter with built-in voltmeter for measuring insulation resistance, voltage, and continuity in electrical systems. The autoranging digital meter includes true root mean square (TRMS) and direct current (DC) voltage measurement. The dual LCD screen indicates test results either digitally or with an analog arc function to replicate the response of analog meters. The unit has a voltage detection test inhibit feature prevents testing when a circuit has a voltage of greater than 50V. The tester is safety rated to European Standard EN61010-1, Category IV, 600V and is also Ingress Protection 54 (IP54)-rated for protection against dust and splashing water. The Megger MIT400 series is commonly used by cable installers and maintenance workers.


Automatic continuity testing range 0.01 to 100 Ohms (0-50 Ohms on analog range)
Voltage testing range 0 to 600V DC or TRMS
Voltage test inhibit level 50V
Power supply 5 AA alkaline or rechargeable batteries
Weight 590g / 20.73oz.
Safety standard met International Electrotechnical Commission (IEC)/European Standards (EN) 61010-1 Cat IV 600V
Mechanical standard met IP54, for protection from dust and splashing water
Dimensions 220 x 92 x 50mm / 8.66 x 3.63 x 1.97 inches

H is height, the vertical distance from the lowest to highest point; W is width, the horizontal distance from left to right; D is depth, the horizontal distance from front to back.

Electrical test meters report electrical circuit properties, such as voltage, resistance, capacitance, and continuity. Available in handheld or benchtop form, they detect electrical problems in equipment, wiring, and power supplies. A variety of probes, clamps, and leads can be used to connect the meter to a circuit or device. Single-function meters, such as battery testers and voltage testers, measure one property of a circuit, and multimeters measure multiple properties. Electrical test meters display information either in analog form using a needle that moves on a calibrated scale, or in digital form using digits or a graphic representation on an LED screen. Meters have electrical properties that are to be measured and the anticipated range of results, and should have a rating that is higher than the maximum value of the anticipated range. An electrical test meter has multiple settings corresponding to potential ranges of values for the properties it can measure. A manual ranging meter requires the operator to flip through different settings until the correct range is reached. An autoranging meter cycles through range settings automatically until it reaches the correct range.

Megger manufactures equipment for cable fault locating, protective relay testing, telecommunications and data integrity, and power quality testing under multiple brand names, among them Megger, Biddle, States, and AVO. The company, founded in 1889, is headquartered in Dover, England, and meets International Organization for Standardization (ISO) 9001:2008 standards.

What’s in the Box?
  • MIT400-EN Series Telecom and CATV Digital/Analog Insulation Tester
  • (1) Set red/black test leads
  • (5) 1.5V alkaline batteries
  • Instrument case with stand
  • Polypropylene carry case
  • Calibration certificate
  • Instructions

Product Features

Insulation tester for testing insulation resistance, voltage, and continuity in electrical installations Autoranging digital meter with TRMS voltage detection Dual digital display with analog arc function to replicate response of analog meters Voltage detection test inhibit function set at 50V for safety Safety rated to European Standard EN61010-1 Category IV, 600V and IP54 rated for protection against dust and splashing water

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