UNI-T UT593 Multimeter Multifunction Installation Tester

The UNI-T UT593 Multimeter Multi-function Installation Tester is your ideal companion for all electrical installation, inspection and repair work. This versatile device allows you to measure RCD, loop and line impedance, grounding resistance continuity, insulation resistance, and AC/DC voltage. With its user-friendly interface and robust construction, the UT593 is well suited for both home use and use in the construction industry. Its precise measurement functions and high reliability make it an indispensable tool for electricians and technicians.


  • The UT593 measures insulation resistance at voltages up to 250V, 500V, and 1000V.
  • It can test the grounding resistance in a range from 0.00Ω to 199Ω.
  • Line impedance is accurately measured in the range of 0.01Ω to 2000Ω.
  • The UT593 can also determine the loop impedance in a range from 0.01Ω to 2000Ω.
  • The RCD test can be performed at currents from 10mA to 500mA.
  • A phase sequence test clearly displays the correct phase sequence on the display.
  • The voltage measurement for AC ranges from 0V to 440V.
  • The device has an automatic shutdown and a low battery power display.
  • Data can be saved and easily retrieved as needed.
  • A backlit LCD ensures good readability even in poor lighting conditions.

Application examples:

    • Checking electrical installations in residential buildings and industrial plants.
    • Conducting safety checks and inspections on circuits.
    • Troubleshooting and repairing electrical systems.
    • Regular maintenance of electrical systems to prevent failures.
    • Training and education in the field of electrical engineering.


    Technical data:

    • Manufacturer: UNI-T 
    • Manufacturer SKU: UT593
    • General Properties
      • LCD display: 9999-digit display with analogue bar graph
      • Test of insulation resistances: 250V~1000V DC
      • Ground resistance continuity test: 200mA
      • Loop impedance/Prospective Fault Current (PFC)/Prospective Short Circuit Current (PSC) Test
      • Lock Test: lock test
      • RCD trip time test: RCD trip time and data storage with one button
      • Test modes: Full wave/half wave and countdown (30s) test modes selectable
      • Phase angle option: 0°/180° for detecting the fastest trip time
      • RCD trip current test: Test of the RCD trip current strength
      • Phase sequence and error test: Phase sequence and error measurement
      • Automatic AC/DC voltage test and test
      • Connection test with real-time status display
      • Backlight: White backlight; automatic shut-off
    • Specific tests and measuring ranges
    • Insulation resistance (Ω):
      • Range: 0.05MΩ~1000MΩ
      • Accuracy: ±10%
      • Short circuit current: <2mA
    • Loop impedance (Ω):
      • Range: 0.00Ω~199Ω
      • Test current: >200mA
    • Line impedance (Ω):
      • Range: 0.01Ω~2000Ω
      • Test current: 20A
    • RCD Test:
      • Trip current: 10mA/30mA/100mA/300mA/500mA
      • Operating voltage (frequency): 195V253V (45Hz65Hz)
      • Trip time ranges:
        • ×1/2 *I△n: 0ms~2000ms
        • ×1 *I△n: 0ms~300ms
        • ×1 *I△n: 0ms~500ms (countdown selectable)
        • ×2 *I△n: 0ms~150ms
        • ×2 *I△n: 0ms~200ms (countdown selectable)
        • ×5 *I△n: 0ms~40ms
    • Phase sequence Test:
      • Phase sequence: L1→ L2→ L3 (forward rotation); L1→ L3→ L2 (reverse rotation)
      • Operating voltage (frequency): 100V440V (45Hz65Hz)
    • AC voltage range (V):
      • Range: 0V~440V
      • Frequency response: 45Hz~60Hz
      • Resolution: 1V
    • Safety
      • CAT III: 300V
      • Certificate: CE
    • Power supply: 1.5V battery R6 AA x 6
    • Dimensions: 370 x 145mm x 315mm
    • Weight: 3.5kg

    Scope of delivery:

    • 1x UNI-T UT593 Multimeter
    • 1x Accessories (1.5V batteries,crocodile clips, measurement heads, measurement cables, measurement probe, carry bag)
    • 1x User manual English
    • 1x Transport case

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    UNI-T UT593 Multimeter Multifunction Installation Tester

    • Brand: UNI-T
    • Product Code: 423683
    • Availability: In Stock
    • CHF439.00

    • Ex Tax: CHF406.11

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    Tags: UT593, Multimeter, Multifunction, Installation tester, Tester, Insulation resistance, Earth resistance, Loop impedance, Line impedance, RCD, Test, Phase sequence test, AC Voltage, Electrician's tool, Construction industry, Electrical installation, Safety check, Troubleshooting, Maintenance, Electrical engineering, UNI-T.