UT505B Handheld Insulation Resistance Tester 1000V True RMS

UT505B Handheld Insulation Resistance Tester by Uni-T

$549.99 + GST

Everyday Low Trade Price
Free Delivery Within New Zealand
30 Day Hassle Free Returns

UT505B Handheld Insulation Resistance Tester With Multimeter Features


Uni-T manufacturers an extensive range of testing and measurement equipment of the highest quality designed with professionals in mind.

Uni-T’s UT505 series handheld true RMS insulation resistance testers combines many features of a digital multimeter and insulation resistance tester all in one. Aside from the  typical multimeter functions, these meters can also measure insulation resistance, PI, DAR, and automatically calculate resistance ratio to determine the insulation status. They are highly accurate and provide stable readings. It is a popular and well liked product by many electrical engineers.


The UT505 can be used in insulation resistance testing of precision tools, including motors, cables, transformers, switches, electrical appliances, and insulated materials.

Handheld Insulation Resistance Tester Review:

The Uni-T UT505B is a leading handled insulation tester with many great functions and features. It is well designed in a durable case with solid construction.

Handheld Insulation Resistance Tester Features:

  • 6000 display count with analogue bar
  • PI/DAR measurements for auto resistivity calculation
  • Comparison function
  • Lock/timing measurements, 6 sets of timing selectable
  • 99-group data storage
  • Auto discharge to improve safety
  • Step voltage: 50%~120% for each range
  • Data hold
  • Auto power off
  • Backlight
  • Single hand operation through remote controlled probe
  • Live wire testing
  • High voltage output alarm
  • Continuous conductivity measurement
  • Leakage current display
  • Auto fuse check/warning
  • Meets IEC 61557; 61557-1:2007; 61557-2:2007; 61557-4:2007
  • 12 month warranty


Included with the UT505B Handheld Insulation Tester:

Batteries, test leads, test probes, alligator clips, carrying bag, and english manual

Delivery and Returns:

Delivery is by courier from Auckland, delivery times may vary. All Auckland orders are delivered the next business day, other main business centres and standard areas are within two – three business days from payment.
All rural areas are subject to normal rural delivery times.
For more details on delivery please feel free to contact us before ordering. Please contact us for Return Authorisation before returning.

Satisfaction Guarantee:

If you are not completely satisfied with your purchase, simply contact us to return it within 30 days in the original packaging and condition supplied for a full refund.

Warranty Information:

Unless specified all products carry a minimum 12-month manufacturer’s return to base warranty. HVACTOOLS will provide full support for this warranty. All products that are found to be faulty within 30 days of purchase will be replaced with brand new products.


Handheld Insulation Resistance Tester Specifications:

Insulation resistance (Ω) 50V50V/100V/250V/500V/1000V0%~20%
Load current50V (R=50kΩ) 1mA0%~10%
100V (R=100kΩ) 1mA0%~10%
250V (R=250kΩ) 1mA0%~10%
500V (R=500kΩ) 1mA0%~10%
1000V (R=1MΩ) 1mA0%~10%
Short circuit current<2mA
Leakage current (A)10~2000μA±(10%+3)
Low resistance (Ω)0.01Ω~100Ω (about 5V/>200mA/20mA optional)±(1.5%+3)
General resistance (Ω)0.01kΩ~10MΩ±(3%+3)
DC voltage (V)0V~600V±(2%+3)
AC voltage (V)0V~600V±(1.5%+5)
Frequency (Hz)45~1kHz±(0.1%+3)
Capacitance (F)100pF~500μF±(5%+5)
Display count6000
Auto range/True RMS
Step voltage10% steps at 50%~120% of range
DAR60s/15s and 60s/30s
PI/Timing measurement
Auto discharge
Auto fuse check
Analog bar graph
Continuity buzzer
Comparison measurement
Low battery indication
Power1.5V battery (AA) x  6
Display78mm x 59mm
Product colorRed and grey
Product net weight630g
Product size103mm x 225mm x 59mm
Standard accessoriesBatteries, test leads, test probes, alligator clips
Standard individual packingCarrying bag, gift box, English manual