201A Series – Three-Phase Voltage/Phase Monitor 系列 - Littelfuse 201A Voltage Monitoring Relays Provide Superior Protection

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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.

功能与特色

  • Proprietary microcontroller-based circuitry
  • Auto-sensing wide voltage range
  • Advanced LED diagnostics
  • Compact design for 8-pin; DIN-rail or surface mount

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Catalog #Input
Voltage (V)
Output
Form
Termination TypeMounting MethodDimensionsWeight (lbs/g)HumidityInput AC Line Frequency (Hz)Maximum Input PowerOutput Load Rating (VA)Overvoltage Reset Voltage (%)Overvoltage Trip Voltage (%)Restart Delay RangeTrip Delay RangeTrip Point Accuracy (%)StockSamplesCompare
产品号输入
电压(V)
输出
型式
端接类型安装方法尺寸规格重量(磅/克)湿度Input AC Line Frequency (Hz)Maximum Input PowerOutput Load Rating (VA)Overvoltage Reset Voltage (%)Overvoltage Trip Voltage (%)Restart Delay RangeTrip Delay RangeTrip Point Accuracy (%)库存样品比较
201A 190 - 480 VacSPDT扭矩: 12 in-lbs.;12 - 22 AWG单芯或绞合式DIN导轨或表面安装式(插入OT08-PC插座)1.75 H x 2.38 W x 4.13 D in. (44.5 x 60.3 x 104.8 mm)0公斤10 - 95% non-condensing per IEC 68-2-350 / 605Pilot Duty: 480 VA @ 240 Vac; General Purpose: 10 A @ 240 Vac2 sUnder/Over Voltage: 4 s; Unbalance/Phase faults: 2 s±1%查看 Order
201A-9 190 - 480 VacSPDT扭矩: 12 in-lbs.;12 - 22 AWG单芯或绞合式DIN导轨或表面安装式(插入OT08-PC插座)1.75 H x 2.38 W x 4.13 D in. (44.5 x 60.3 x 104.8 mm)0公斤10 - 95% non-condensing per IEC 68-2-350 / 605Pilot Duty: 480 VA @ 240 Vac; General Purpose: 10 A @ 240 Vac107%110%2 sUnder/Over Voltage: 4 s; Unbalance/Phase faults: 2 s±1%查看 Order
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