Product selection guide: Insulation testers

Use our product selection guide to find the insulation tester that fits your needs best.
Fluke 1503 Insulation Resistance Tester
Fluke 1577 Insulation Multimeter Image 01
Fluke 1503 Insulation Resistance MeterFluke 1577 Insulation Multimeter
Insulation test voltages500 V, 1000 V500 V, 1000 V 
Insulation resistance0.01 MΩ to 2 GΩ0.01 MΩ to 600 MΩ 
Auto-discharge of capacitive voltage   
Resistance0.01 MΩ to 20 KΩ0.01 MΩ to 50 MΩ 
Warranty1 year3 years 
Remote probe, test leads, alligator clips   
Rugged, utility hard case   
Auto power off   
AC/DC voltage  
DC millivolts  
AC/DC milliamps