The LT300 combines high current-loop testing over a wide range of frequencies and supply voltages with simple operation. This is a HIGH CURRENT ONLY tester, designed for installations where there are no RCDs installed. A two-wire test performs a fast loop impedance measurement at a test current up to 27A, with a resolution of 0.01ohms. Frequency range and operating voltage are wide, allowing for a diverse range of applications up to and including CATIV 550V phase-to-phase. Testing commences automatically as soon as the instrument is connected to the supply. Repeat testing is provided by the TEST button.

High current loop tester
Simple auto start operation
16Hz to 400Hz frequency range
Up to CATIV 300V phase-to-earth (550V phase-to-phase) applications
Optional two-wire lead set available separately, RS stock no. 537-7282

RS is an authorised Megger distributor. Purchased though RS this product is eligible for the Megger extended 3 Year warranty

durable hard carry case; BS1363 mains socket test lead; 8 x AA alkaline batteries; instructions.

When you need to ensure your electrical systems are in tip-top shape, turn to this loop impedance tester from Megger. It's a versatile piece of kit that measures the resistance of high-current circuits up to 27A with single or three-phase testing, returning results on the 20 and 200Ω ranges. Loose connections or damaged cables are no problem, as the tester identifies faults so you can address potential hazards in a jiffy. Once the supply frequency is established upon connection, the device starts testing automatically to help you fly through your tasks.

• Large digital display for clear readouts
• Safe for use in challenging conditions, thanks to a wide operating temperature range between -10°C and +60°C
• Robust rubber case for protection when not in use
• Compact measurements of 203 (L) x 148 (H) x 78mm (D) make it easy to carry

• Electrical engineering
• Construction sites
• Industrial equipment maintenance

This device is powered by eight AA batteries, which can be either single-use alkaline or NiMH rechargeable cells.