The GA earth leakage relay family was designed by NewElec to meet market challenges for a more reliable and stable form of earth leakage protection for use on direct-on-line starters, variable speed drives or any soft starter. The relay is particularly suitable in applications involving large kilowatt motors without sacrificing earth leakage sensitivity or trip delay rapidity.
The GA is available in diverse configuration options, including latched or non-latching main trip contact, fail-safe or non fail-safe options, as well as 110 V/220 V or 380 V/525 V a.c. auxiliary supply voltages. Two models are offered: the GA with a standard 74 x 134 mm cut-out; and the GA-ELX with an adaptor plate to fit a 71 x 94 mm cut-out.
A latched ‘contactor trip’ changeover contact can only be reset by pressing the control panel-mounted pushbutton. Sensitivities range from 30 mA to 1000 mA with userselectable instantaneous or IDMT curve selection while using the same earth leakage core.
GA relays provide harmonic suppression and isolation to IEC 255-5 App A. The trip contact current rating is 6 A at 220 V and 3 A at 525 V a.c.
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