Megger MIT320 MIT Series Insulation Resistance Testers

Megger MIT320 is a high-performance insulation and continuity tester from the renowned MIT300 series, specifically designed to meet the demanding needs of today's electrical contractors. Developed through extensive customer research, this instrument combines rugged durability with comprehensive safety features, making it ideal for domestic, commercial, and industrial electrical testing applications.

The MIT320 features a unique dual digital/analog display – large 20mm high characters provide a clear digital readout, while an analog arc gives the feel of a traditional analog instrument with true analog response. This combination allows users to observe trends and rate of change while maintaining precise numerical accuracy.

Key Features

Feature Description

Test Voltages 250 V, 500 V, 1000 V DC

Insulation Range 10 kΩ to 999 MΩ

Continuity Testing 0.01 Ω to 99.9 Ω

Resistance Measurement 10 Ω to 1 MΩ

Voltage Measurement 0 to 600 V AC (50/60 Hz) or DC

Continuity Buzzer Adjustable threshold 1 Ω to 20 Ω, response <20 ms

Test Current 1 mA at minimum pass values of insulation

Short Circuit Current 1.5 mA nominal (insulation); 200-215 mA (continuity)

Advanced Functions

The MIT320 includes enhanced features beyond basic models :

Backlit LCD display for use in poorly lit environments

Illuminated range panel for easy operation in dark conditions

Insulation limit alarm – audible alert when results exceed set thresholds

Adjustable continuity buzzer threshold (1 Ω to 20 Ω)

Switched test probe (SP4F) included for hands-free remote testing

Test result storage – capacity for 1000 results with job numbering (255 locations, 99 distribution boards, 99 circuits, P1/P2/P3 phases)

USB interface for data download to PC using included Download Manager or Megger Powersuite Professional software

Compatible with CertSuite.app for professional reporting