The EL731 AC-DC sensitive earth-leakage relay can detect ground currents down to 0 Hz, even in resistance-grounded electrical systems. Suitable for use with AC, mixed AC-DC, and DC systems, including low-voltage 6-pulse VFDs commonly used on motors up to 250 hp, the product can be installed in place of an existing ground fault relay without replacing the current transformer. Features include a temperature input, metering capabilities, password-protected alarm, and trip settings. An Ethernet communications port is optional.
For more information, visit www.littelfuse.com/acdc.