Littelfuse 201A Symcom MotorSaver 3-Phase Voltage Monitor, Model -AU, 190-480V, Variable Trip Point, Restart Delay, Trip Delay, and Voltage Unbalance, 8-Pin Octal Base

The 201A is a 3-phase, dual-range, auto-ranging voltage monitor that protects 190-480VAC, 50/60Hz motors regardless of size. The product provides a user-selectable nominal voltage set point and the voltage monitor automatically selects between the 200V and 400V range. The 201A includes unique advanced LED diagnostics, where color and different light patterns distinguish between faults and normal conditions. This unique microcontroller-based voltage and phase-sensing device constantly monitors 3-phase voltages for damaging power line conditions. When a damaging condition is detected, the 201A's output relay de-energizes after a specified trip delay. The output relay re-energizes after power line conditions return to acceptable levels. Specifications: Input voltage (V): 190 to 480 VAC. Maximum input power: 5 W. AC input line frequency (Hz): 50/60Hz. Output form: SPDT. Output load capacity (pilot): 480 VA 240 VAC; General purpose: 10 A 240 VAC. Reset delay range: 2 s. Path delay interval: Undervoltage/Overvoltage fault: 4s; Unbalance & Phase Failures: 2s. Trip Point Accuracy(%): 1%. Under Voltage Trip Voltage: 90%. Under Voltage Reset Voltage(%): 93%. Voltage Unbalance Trip Point(%): 6%. Voltage Unbalance Reset(%): 4.50%. Termination Type: 12.0 in lbs; Wire: Stranded or Solid 12-22 AWG. Mounting Method: DIN Rail or Surface Mount (OT08-PC Socket to Socket). Operating Temperature: -20 to 70 °F. Humidity: 10-95% non-condensing per IEC 68-2-3. Dimensions: 1.75 in H x 2.38 in W x 4.13 in D (1.752 x 2.480 x 4.252 in). Product Type: Voltage Meter. Voltage: 190-480 V. Output: SPDT