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Reliable frequency inverter ideal for controlling motor speeds.
The Mitsubishi Freqrol A500 Inverter, model FR-A520-3.7K, was previously utilized in a university setting, where it became surplus to requirements. Despite this, it remains in good cosmetic condition. This frequency inverter requires integration with a larger system for operation and testing, which we are currently unable to perform. It is an ideal choice for applications needing precise motor speed and torque control.
Lab equipment markets are fragmented. Buyers spend weeks calling distributors, comparing quotes, and verifying supplier reliability. Sellers struggle to reach global research labs.
We built Questpair to fix this. Every supplier on the platform is verified before listing. Every quote you receive comes from a real, vetted seller. AI prepares your case in minutes, then a real specialist takes over.
We're an independent team based in The Netherlands, working with research labs and procurement teams across Europe and worldwide.
With a service contract, ten to fifteen years is normal for most benchtop instruments. Detectors and pumps are the parts that wear first.
Often, yes. Verified suppliers frequently work with service partners converting the instrument. If applicable, we can list servicing options alongside the offer.
Ask a scientist through the request button. Parts are often available even when the instrument itself is discontinued.
Two to six weeks, depending on refurbishment scope and whether calibration is included.
We ship to 38 countries. Crating and customs handling are quoted with the instrument.
Tell us what you need and a scientist finds it for you, usually within the hour.
Last updated 22 October 2026
The middle half of the 79 with a price runs from €223 to €890.
