Megger MIT420/2 Industrial Telecom Insulation Tester

  • Insulation testing up to 200 GΩ
  • Variable test voltages from 10–1000V
  • Built-in memory for test result storage
  • AC/DC voltage readings to 600V TRMS
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From £543.75 (ex VAT)

£652.50 (inc VAT)

Earn 543 – 573 points

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FREE Megger Test Lead Set worth £32.95!
  • Insulation testing up to 200 GΩ
  • Variable test voltages from 10–1000V
  • Built-in memory for test result storage
  • AC/DC voltage readings to 600V TRMS
Free Shipping

Spend over £100 on any new goods order and receive automatic free shipping

Rewards

Points make purchases! For every £1 spent, earn back 1p that can be spent on any future new goods purchase

Our Price Promise

We offer a Price Match Promise! Find an equivalent tester for a cheaper price on a competitor site, and we’ll do our best to match it

Express Delivery & Calibration

Express Delivery is currently unavailable for customers wishing to add calibration to their New Goods order. For more information, visit our Delivery Information page. 

From £543.75 (ex VAT)

£652.50 (inc VAT)

Earn 543 – 573 points

In Stock - Express Delivery Available
FREE Megger Test Lead Set worth £32.95!
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Megger MIT420/2 Industrial Telecom Insulation Tester

The Megger MIT420/2 Industrial Telecom Insulation Tester delivers dependable insulation resistance measurements for electrical and telecom engineers. Built for everyday field use, it is both rugged and easy to operate. The upgraded design features a built-in stand and rubber casing to enhance usability and protection on-site.

This model supports a full range of fixed insulation test voltages (50V, 100V, 250V, 500V, 1000V) and allows variable settings from 10V to 1000V. The Megger MIT420/2 is capable of testing insulation resistance up to 200GΩ, with clear PASS/FAIL indications and automatic voltage display during operation. It also performs Polarisation Index (PI) and Dielectric Absorption Ratio (DAR) tests to support condition-based monitoring.

Complete Measurement Capability

The tester provides accurate continuity measurements from 0.01Ω to 1MΩ, with automatic polarity reversal and a lead null function. Frequency measurements range from 15Hz to 400Hz, and the voltage range spans up to 600V AC/DC, including a dedicated mV mode for low signal detection. Capacitance testing is possible from 0.1nF to 10µF, offering added flexibility for diagnosing electrical components.

Built for Professional Use

With built-in memory capable of storing over 1000 test results and Bluetooth data transfer, the Megger MIT420/2 supports efficient record keeping. It features a long battery life of up to 3000 tests per charge using rechargeable NiMH batteries. Rated CAT IV 600V and CAT III 1000V, the tester meets demanding safety standards. Designed for industrial and telecom applications, this instrument supports safe, repeatable testing on-site or in the workshop.

Key Features
  • Performs insulation resistance tests up to 200GΩ
  • Selectable test voltages from 50V to 1000V
  • Variable test voltage adjustment from 10V to 1000V
  • Measures continuity from 0.01Ω to 1MΩ
  • Offers PI and DAR insulation testing modes
  • Built-in memory stores over 1000 test results
  • Integrated Bluetooth for easy data transfer
  • Voltage measurement range up to 600V AC/DC
  • Includes a 15Hz to 400Hz frequency range
  • Measures capacitance from 0.1nF to 10µF
  • Features auto power-down and 60-second timer
  • CAT IV 600V and CAT III 1000V rated for safety
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Megger MIT420/2 Industrial Telecom Insulation Tester

The Megger MIT420/2 Industrial Telecom Insulation Tester delivers dependable insulation resistance measurements for electrical and telecom engineers. Built for everyday field use, it is both rugged and easy to operate. The upgraded design features a built-in stand and rubber casing to enhance usability and protection on-site.

This model supports a full range of fixed insulation test voltages (50V, 100V, 250V, 500V, 1000V) and allows variable settings from 10V to 1000V. The Megger MIT420/2 is capable of testing insulation resistance up to 200GΩ, with clear PASS/FAIL indications and automatic voltage display during operation. It also performs Polarisation Index (PI) and Dielectric Absorption Ratio (DAR) tests to support condition-based monitoring.

Complete Measurement Capability

The tester provides accurate continuity measurements from 0.01Ω to 1MΩ, with automatic polarity reversal and a lead null function. Frequency measurements range from 15Hz to 400Hz, and the voltage range spans up to 600V AC/DC, including a dedicated mV mode for low signal detection. Capacitance testing is possible from 0.1nF to 10µF, offering added flexibility for diagnosing electrical components.

Built for Professional Use

With built-in memory capable of storing over 1000 test results and Bluetooth data transfer, the Megger MIT420/2 supports efficient record keeping. It features a long battery life of up to 3000 tests per charge using rechargeable NiMH batteries. Rated CAT IV 600V and CAT III 1000V, the tester meets demanding safety standards. Designed for industrial and telecom applications, this instrument supports safe, repeatable testing on-site or in the workshop.

Key Features
  • Performs insulation resistance tests up to 200GΩ
  • Selectable test voltages from 50V to 1000V
  • Variable test voltage adjustment from 10V to 1000V
  • Measures continuity from 0.01Ω to 1MΩ
  • Offers PI and DAR insulation testing modes
  • Built-in memory stores over 1000 test results
  • Integrated Bluetooth for easy data transfer
  • Voltage measurement range up to 600V AC/DC
  • Includes a 15Hz to 400Hz frequency range
  • Measures capacitance from 0.1nF to 10µF
  • Features auto power-down and 60-second timer
  • CAT IV 600V and CAT III 1000V rated for safety

 

Technical Specifications
SpecificationDetails
Manufacturer Part Code1006-521
Test Voltage RangeFixed: 50, 100, 250, 500, 1000V; Variable: 10V to 1000V
Maximum Insulation Resistance200GΩ
Insulation Test Accuracy±2% ±2 digits ±0.2% to ±4.0% per GΩ depending on voltage
Continuity Measurement Range0.01Ω to 999kΩ (0–1000kΩ analogue scale)
Continuity Accuracy±3% ±2 digits (0 to 100Ω), ±5% ±2 digits (100 to 500kΩ)
Voltage Measurement RangeAC: 10mV to 600V RMS (15Hz–400Hz), DC: 0 to 600V
Voltage Accuracy±2% ±1 digit (AC), ±2% ±2 digits (DC)
Frequency Measurement Range15Hz to 400Hz
Frequency Accuracy±0.5% ±1 digit (100Hz to 400Hz)
Capacitance Measurement Range1nF to 10μF
Capacitance Accuracy±5% ±2 digits (0.1nF to 1nF unspecified)
Display TypeAnalogue, 1GΩ full scale
Test CurrentInsulation: 1mA max, Continuity: 200mA (0.01Ω to 4Ω range)
Open Circuit Voltage (Continuity)5V ±1V
Leakage Detection10% ±3 digits
Timer Control60-second countdown
PolaritySingle (default) or dual (configurable)
Lead Resistance NullingUp to 9.00Ω
Data Storage>1000 results
Data TransferBluetooth wireless (Class II, up to 10m range)
Battery Life3000 insulation tests (5s ON/55s OFF @ 1000V into 1MΩ)
Power Supply6 x NiMH rechargeable batteries (included)
Dimensions228 x 108 x 63 mm (9.00 x 4.25 x 2.32 in)
Weight600g (1.32 lbs)
Safety RatingCAT IV 600V, CAT III 1000V
ComplianceEN 61557-1, EN 61557-2, EN 61557-4

 

Megger MIT410 vs MIT420 vs MIT430
 MIT410/2MIT420/2MIT430/2
Insulation test voltage
250 V, 500 V and 1kV
50 V and 100 V
Variable from 10 V to 1kV
Insulation resistance to200 GΩ200 GΩ200 GΩ
PI, DAR and timed
Lock on
Continuity
0.01 Ω to 10 MΩ
Auto reverse polarity
Test lead null>10 Ω>10 Ω>10 Ω
Voltage measurement
600V AC/DC
mV AC/DC
Frequency measurement45 – 450Hz45 – 450Hz45 – 450Hz
Capacitance
Capacitance 1nF – 10µF
Additional features
PASS/FAIL LIMIT ALARM
Auto power down
Battery powered
Recharger ready
On-board memory
Bluetooth downloading and software
2-wire silicone lead set
Probe incorporating test button
CAT IV 600V rated
IP54 rated
Free calibration Certificate
Warranty upgradeable to 3 years FREE

 

What’s Included
  • Megger MIT420/2
  • Red/Black Silicone Lead Set with Clips
  • Protective Rubber Boot
  • Manufacturers Calibration Certificate
  • Batteries

QUESTIONS

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