Megger MFT1721 Multifunction Tester

MFT1721 Multifunction Tester

The Megger MFT1721 Multifunction Tester is the ideal instrument for electricians working on low voltage electrical installations, offering a comprehensive range of tests required for BS7671 (18th Edition) certification. As the mid-range model in Megger’s acclaimed 1700 series, the MFT1721 upgrades the capabilities of the basic MFT1711 by adding 100V insulation testing, True RMS voltage measurement, and compatibility with Type B RCDs.

Designed for tough environments, this tester features large, easy-to-use rotary dials that can be operated even while wearing gloves. It utilizes Megger’s patented 2-wire non-trip loop testing technology, which allows for reliable loop impedance readings without tripping RCDs. Additionally, the MFT1721 supports EV charge point testing (requires optional adapter) and leakage current measurement, making it a versatile choice for modern industrial and residential applications. Its rubber over-moulded case ensures protection against dust and water (IP54), providing durability for daily site use.

Megger MFT1721 Key Features:

• Enhanced Loop Testing: Performs 2-wire and 3-wire non-trip loop tests, plus high-current loop testing.

• RCD Versatility: Tests AC, A, S, and Type B RCDs, including 3-phase RCDs.

• Insulation Resistance: Selectable ranges of 100V, 250V, 500V, and 1000V with adjustable buzzer threshold.

• Auto-Start Function: Automatically begins Loop and Continuity tests when probes touch the circuit.

• Dual Display: Shows loop resistance and fault current (PFC/PSCC) simultaneously.

• Safety First: Input protection against accidental connection to live circuits.