The Metrel MI 3252 MicroOhm 100A is a high-current low resistance ohmmeter designed for UK electricians, HV engineers and commissioning technicians who need precise contact resistance testing on high-current electrical installations. Delivering test currents from 100 mA up to 100 A, it is ideal for verifying breakers, switches, busbars and critical joints where low resistance directly impacts safety and reliability.
Using 4-wire Kelvin testing, the MI 3252 eliminates lead resistance to deliver highly accurate results, making it a trusted tool for substations, industrial plants and power distribution maintenance. Its portable design, battery or mains operation and onboard data storage make it suitable for both site work and workshop testing.
How does the MI 3252 support high-current testing?
High contact resistance can lead to overheating, voltage drops and equipment failure. The MI 3252 applies real-world test currents up to 100 A, allowing engineers to assess components under realistic operating conditions. Bidirectional measurement further improves accuracy by reducing thermal EMF effects, while configurable PASS/FAIL limits provide fast compliance checks during inspections and commissioning.
Order today to enjoy free delivery, expert support and our 90-day satisfaction guarantee. Need advice? Our team is here to assist you.
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.
