Littelfuse 201A 190/480 VAC 50/60 Hz Voltage Monitoring Relays
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Description
Description
The 201A series is a three-phase, auto-ranging, dual-range voltage monitor that protects 190–480 V ac, 50/60 Hz motors regardless of their size. This monitor provides a user-selectable nominal voltage setpoint and will automatically select between the 200 V and 400 V range. It includes advanced, single LED diagnostics where color and light patterns distinguish between faults and normal conditions. This unique microcontroller-based voltage and phase-sensing unit constantly monitors the three-phase voltages to detect harmful power line conditions. When a harmful condition is detected, the output relay is deactivated after a specified trip delay. The output relay reactivates after power line conditions return to acceptable levels for a specified restart delay time.
Specifications:
Manufacturer: Littelfuse
Manufacturer Part Number: 201A
Product Type: Voltage Monitoring Relays
Voltage Rating: 190/480 VAC
Frequency Rating: 50/60 Hz
General Purpose Rating: 10 A @ 240 VAC
Pilot Duty Rating: 480 VA @ 240 VAC
No. of Phase: 3
Dimensions: 5.75" x 3.5" x 3.35"
Weight: 2.0 lb.
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