The MI3100S is a compact multifunction tester, ideal for both domestic and industrial installers. Equipped with a wide range of 18th Edition tests, the MI3100S has rechargeable batteries, help screens, pass / fail evaluation on the RCD test and automatic calculation of R1 + R2. The addition of an earth resistance test makes this great value for money.
Metrel MI3100S Test Functions:
50V - 1000V Insulation Test
7mA & 200mA Continuity Tests
Line / Loop Impedance
R1 + R2 Impedance
Non-Trip Earth Loop Test
True RMS Voltage & Frequency
Phase Sequence
RCD Testing (Auto, General, Selective, Type AC, A, F)
Earth Resistance Test (3 wire method)
Along with the general tests, the MI3100S has built-in fuse tables, enabling automatic evaluation of the Line / Loop impedance results. Fast testing of ring circuits is made possible with the Easi-switch (optional extra) and the unit will automatically revers polarity on a continuity test.
Why choose Instrotech for your electrical test equipment?
With over 40 years’ experience supporting UK electricians, technicians and engineers, Instrotech is your trusted partner for quality tools and expert service. When you purchase from us, you benefit from:
Free UK shipping on all orders
Access to our knowledgeable technical support team
Available calibration services to maintain safety compliance
A 90-day money-back guarantee for complete peace of mind
We’re committed to helping you work safely and efficiently with industry-leading products and ongoing support.
