Current Transducer with Cable - 400 Amp. Maretron's Current Transducer is used specifically with Maretron's ACM100 Alternating Current Monitor.. Features:. 400 Amp. Includes Cable. WARNING: This product can expose you to chemicals including NICKEL (METALLIC) which is known to the State of California to cause cancer. For more information go to P65Warnings.ca.gov.