Megger LT300 EN-FS Loop Tester
The Megger LT300 EN-FS Loop Tester delivers precise high current loop testing for electrical systems operating across varied frequencies and voltages. Designed for simple, two-wire operation, it is ideal for both domestic and industrial use. The clear digital display ensures excellent visibility even in dimly lit areas, aiding accurate interpretation of results.
Versatile Frequency and Voltage Performance
Engineered for flexibility, the Megger LT300 supports a wide frequency range from 16 Hz to 400 Hz and voltage up to 550 V. It automatically detects supply frequency, streamlining the test process. Whether used on single or three-phase systems, the unit adjusts effortlessly to match the electrical conditions.
Built for Reliability and Protection
Housed in a rugged rubber armoured casing, the Megger LT300 withstands challenging environments. It meets IP54 waterproof standards and includes a built-in display cover for added durability. Test results remain stable and repeatable with a fine resolution of 0.01 Ω on the 20 Ω range.
Two versions are available, offering flexibility in test environments: the Megger LT300-EN-FS with fused test leads and the Megger LT300-EN-BS with a BS1363 mains plug. Each unit is supplied with a hard carry case, ensuring it stays protected during transport and storage.
Key Features
- High current loop testing ensures stable results
- Voltage range extends from 0 V to 550 V
- Dual lead options for socket or terminal testing
- Auto-detection of frequency for quick setup
- Works across single and three-phase systems
- CAT IV 300 V safety classification
- IP54 housing protects against dust and water
- Clear LCD screen enhances readability in low light
- Two loop impedance ranges up to 200 Ω
- Complies with EN61557 and IEC61010-1 standards




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