The Siemens 3UG5501-2AW30 is an analog monitoring relay for level and resistance, covering 0.5 to 500 kohm with overshoot and undershoot detection. It runs on a universal supply of 24 to 240 V AC/DC at 50/60 Hz and offers a tripping delay adjustable from 0.5 to 30 seconds. The output is a single changeover contact with spring-loaded terminals.
The 0.5 to 500 kohm resistance range covers common sensor and level probe applications—think conductive level rods or resistive temperature sensors where you need a window comparator. The overshoot/undershoot logic means you can set both high and low trip points, or configure it as a single-step monitor. The 24-240 V AC/DC supply simplifies panel wiring: one relay works across control voltages from 24 VDC to 240 VAC without a separate power supply module. The tripping delay (0.5-30 s) lets you ignore brief fluctuations—useful for pump-down cycles or tank filling where slosh triggers a false alarm. The single changeover contact (SPDT) is rated for the relay's switching capacity; spring-loaded terminals speed wiring and hold firm under vibration.
RoHS compliant since 01-06-23.