039-21523-0400 Type PVE-380/480 Under-/Over Voltage trip Relay by CROMPTON INSTRUMENTS (TE Connectivity)

The Crompton Instruments 039-21523-0400 Type PVE-380/480 is an under/overvoltage relay designed for 3-phase, 4-conductor electrical systems. This protective device features adjustable inputs supporting 220-230-240-254-265-277V L/N AC and 380-400-415-440-460-480V L/L AC. It provides reliable monitoring with relay contacts for system control. Operators can configure the under-voltage setting range from 75 to 100% of nominal voltage (Un) and the over-voltage setting range from 100 to 125% Un. Additionally, the unit incorporates an adjustable hysteresis of 1 to 15% Un and an adjustable time delay of up to a maximum of 10 seconds. This combination of adjustable thresholds and time delay parameters ensures precise voltage protection and fault management in industrial power distribution applications.

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