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The GTD series of power solid state relays (zero crossing type) are solid state actuators with built-in heatsink, heater break diagnostics (Hb function), selectable current scale, and adjustable setpoint. Junction overheat protection is available as an option.

An alarm signal is provided in output. The GTD series of power solid state relays are offered with currents of 25A and 40A, rated voltage 480 VAC, and Vdc input control signal.

Voltage transistors are protected by MOV (varistor). All models are designed to guarantee performance at rated currents, with continuous power conduction at 40°C. See the dissipation curves for other performance conditions.

Thanks to their high performance, they are appropriate for very short switching times, with millions of operations without wear on components.

Various accessories are available, such as a front panel attachment, fuses and fuse holders.