Littelfuse's EL731 AC/DC Sensitive Earth-Leakage Relay

EL731 ac/dc sensitive earth-leakage relay can detect ground currents in resistance-grounded electrical systems down to 0 Hz to protect variable-frequency drives (VFDs) that operate at low speeds, during which ac current approaches dc. VFDs operating in resistance-grounded electrical systems are growing in popularity because of their ability to reduce arc-flash hazards.
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Category:
Machine Safety
Product Type:
Safety Relay
Manufacturer:
Littelfuse