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REED ST-5500 Insulation Tester

Model: ST-5500

REED ST-5500 Insulation Tester

Model: ST-5500

This insulation tester has a double molded plastic housing and features a large easy-to-read dual display with backlight. It will test voltages of 250, 500 or 1000V.

Sorry! This product has been discontinued.

The REED ST-5500 Insulation Tester has been discontinued, it has been replaced by the REED R5600 Insulation Tester

REED ST-5500 Offers

The REED ST-5500 has many features such as 250V, 500V or 1000V test voltage combinations, a large, easy-to-read dual display with backlight and and a durable double molded plastic housing making it stand up to the test of time. With its CAT III 1000V rating, this is the only insulation tester you need in your tool bag.


  • Test voltage combinations: 250V, 500V or 1000V
  • 1mA test current for MΩ range at rated voltage
  • 200mA test current for continuity range
  • Continuity test with beeper
  • Large, easy-to-read dual display with backlight
  • Data hold switch
  • Test button may be locked on for hands-free operation
  • Double molded plastic housing
  • Meets IEC61010-1 Cat. III 1000V

REED ST-5500 Specifications

Test Voltages 250V, 500V, 1000V
Insulation Resistance Range 200MΩ, 2000MΩ
Insulation Resistance Accuracy ±3.5% rdg. ±5 dgt.
Resistance Range 200Ω, 2000Ω
Resistance Accuracy ±1% rdg. ±2 dgt.
Voltage Range 750VAC / 1000VDC
Voltage Accuracy AC: ±1.2% rdg. ±10 dgt.
DC: ±0.8% rdg. ±3 dgt.
Continuity Range Beeps ≤40Ω
Test Current ≤200mA
Power Supply 6 x 1.5V AA batteries
Dimensions 200 x 92 x 50mm
Weight 700g

What's included with the REED ST-5500

  • ST-5500 Insulation Tester
  • Test Leads
  • Battery
  • Plastic Carrying Case

Ideal Applications for the REED ST-5500

  • Electricians
  • Mechanics
Calibration Lab
When you purchase a REED product it comes included with a one year warranty. We back our products.