Fluke 325 TRMS 400A Commercial Clamp Meter is the ideal tool for high current , clamp-on amp meter measurement up to 2000A. Fluke 325 TRMS 400A Commercial Clamp Meter is a digital clamp meter that is True-RMS 2000A with an extra wide jaw that easily clamps around large conductors, typically found in high-current applications. Fluke's Clamp Meter Selection Guide can help you choose the right product to fit your needs.