The Siemens 3RP1574-1NQ30 is a high-performance electronic time delay relay designed for star-delta (wye-delta) motor starting applications. Built for reliability and precision, this relay provides a configurable time range of 1 to 20 seconds, allowing smooth transition between the star and delta phases to reduce inrush current and mechanical stress on motors.
Housed in a compact 22.5 mm-wide enclosure, the unit supports DIN rail mounting and features screw-type terminalsfor secure wiring. It operates with dual supply voltage inputs—24 V AC/DC and 100–127 V AC (50/60 Hz)—making it versatile for a wide range of industrial control panels.
With one instantaneous and one delayed contact (1 NO + 1 NO), the 3RP1574-1NQ30 offers dependable switching performance. It meets stringent international standards for insulation, electromagnetic compatibility, and temperature resistance, ensuring reliable operation in harsh environments.
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