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MIT400/2 Series

CAT IV Insulation testers

The MIT400 series have been updated with a series of enhancements and additions from years of customer feedback and use.

The MIT400 series represents the industry standard for insulation testing on a wide range of applications and circuits.


Testing the quality of insulation and separation of conductors in cables, shielding and separation to earth of live conductors. Measurement of Polarisation Index and Dielectric Absorption ratio of insulators. Checking the point to point conductor resistance to ensure circuit compliance for protective devices, correct wire routing, voltage drop, system earthing and resistance measurements. Trms, AC & DC Voltage measurement up to 600V (1000V on analogue scale).

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Digital/Analogue Insulation and continuity testers

  • Insulation testing to 1000 MΩ
  • Continuity testing at 200 mA down to 0.01 Ω
  • Live circuit warning (voltage display) and test inhibit
  • Digital/Analogue display
  • Alkaline or rechargeable batteries
  • –10°C to +55ºC operating temperature
  • CATIII 600 V
  • Conforms to EN61557-1

The MIT200 series will find applications in electrical contracting, both on domestic and industrial systems, as well as site maintenance and service departments.

The MIT200 series of insulation and continuity testers are ideal for testing transformers, motors, generators, switchgear, panel building, domestic appliances, power tools etc., as well as fixed electrical wiring systems.

Their small size and light weight make them ideal for those engineers that need to carry them for extended periods.

MIT210EN Details

MIT300 Series

Insulation and Continuity Testers



  •  Extremely easy to use
  •  Tough rubber armoured case
  •  Self contained protective cover
  •  Live circuit warning
  •  Weatherproof to IP54
  •  Intelligent Safety System for protection.

Developed, after extensive customer research, specifically to meet the needs of today’s electrical contractors, the new MIT300 range of insulation and continuity testers from Megger is not only durable and easy to use, but also incorporates a comprehensive set of features designed to ensure operator safety, even under conditions of accidental misuse.

The range includes four models, ensuring an exact match for the needs of every user, all of which offer automatic discharge of the circuit after testing, audible and visual warning if the test probes are applied to a live circuit, and a test inhibit feature which operates automatically under live circuit conditions. The units also conform fully to IEC 61010-1 for use in Category III 600V applications, and provide all of the facilities needed to meet insulation testing requirements relating to the current edition of the IEE Wiring Regulations.

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