Megger MIT481/2 Telecoms Insulation & Continuity Tester
The Megger MIT481/2 Telecoms Insulation & Continuity Tester is designed for telecommunications, cable TV and electrical testing work. It combines insulation and continuity testing with voltage, capacitance, frequency and current measurement functions in one handheld instrument. Insulation testing reaches 500 V and 100 GΩ, while the instrument can also measure AC and DC voltage up to 600 V TRMS.
A three-terminal design allows A, B and E connections, also described as Tip, Ring and Ground/Earth, to remain connected during testing. The required measurement pair can then be selected from the A-B-E control on the front panel, helping reduce the need to disconnect test leads when checking individual pairs. Alternatively, the Megger MIT481/2 Telecoms Insulation & Continuity Tester can operate as a conventional two-terminal instrument.
For dependable field use, the tester includes live-circuit detection and protection, gated access to the 500 V test setting and a stabilised insulation test voltage. It also provides onboard result storage, automatic continuity testing and an IP54-rated enclosure. The Megger MIT481/2 Telecoms Insulation & Continuity Tester therefore combines a broad set of cable and electrical measurements with controls designed for practical telecoms testing.
Key Benefits
- Connects A, B and E test leads at the same time, reducing the need to reconnect leads when testing individual pairs.
- Front-panel A-B-E selection makes it easier to choose the required Tip, Ring and Ground/Earth measurement pair.
- Automatic continuity testing with fast contact detection supports quicker resistance and continuity checks.
- Stabilised insulation test voltage helps provide controlled test conditions with less than +2% (+2 V) over-voltage.
- Gated access to the 500 V test setting helps prevent accidental selection of the higher insulation test voltage.
- Live-circuit detection and protection helps protect the instrument during accidental contact with live circuits.
- Onboard memory allows test results to be stored in the instrument for later reference.
- IP54 protection supports use in demanding telecommunications and cable-testing environments.
- Two-terminal operation remains available when a conventional test arrangement is preferred.
Common Applications
Megger MIT481/2 Telecoms Insulation & Continuity Tester is suitable for a range of testing, maintenance and inspection tasks, including:
- Telecommunications cable insulation testing
- Cable TV cable testing
- Electrical insulation testing
- Continuity and resistance checks
- Tip, Ring and Ground/Earth pair testing
- AC and DC voltage measurement
- Capacitance measurement on cable circuits
- Frequency measurement from 15 Hz to 400 Hz
- REN telephone count and discharge checks
Why Choose This Model?
The MIT481/2 provides fixed 50 V, 100 V, 250 V and 500 V insulation test settings with onboard storage. Compared with the MIT485/2, it suits users who need the core three-terminal telecoms test functions and stored results without the MIT485/2 Bluetooth/software, variable 10 V to 500 V test voltage and recharge-ready functions.