201A-9 - 201A Series

Series: 201A
Questions? Contact Littelfuse Support
External overview image
Roll Over to Zoom
 
The 201A is a 3-phase, auto-ranging, dual-range voltage monitor that protects 190-480VAC, 50/60Hz motors regardless of size. The product provides a user selectable nominal voltage setpoint and the voltage monitor automatically selects between the 200V and 400V range. The 201A includes advanced single 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 the 3-phase voltages to detect harmful power line conditions. When a harmful condition is detected, the 201A’s output relay is deactivated after a specified trip delay. The output relay reactivates after power line conditions return to acceptable levels.

Property (Mouseover for details) Value
Input Voltage (V) 190 - 480 Vac
Maximum Input Power 5
Input AC Line Frequency (Hz) 50 / 60
Output Form SPDT
Output Load Rating (VA) Pilot Duty: 480 VA @ 240 Vac; General Purpose: 10 A @ 240 Vac
Restart Delay Range 2 s
Trip Delay Range Under/Over Voltage: 4 s; Unbalance/Phase faults: 2 s
Trip Point Accuracy (%) ±1%
Overvoltage Trip Voltage (%) 110%
Overvoltage Reset Voltage (%) 107%
Undervoltage Trip Voltage 90%
Undervoltage Reset Voltage (%) 93%
Voltage Unbalance Trip Point (%) 6%
Voltage Unbalance Reset (%) 4.50%
Type of Detection High Voltage Detection
Termination Type Torque: 12 in-lbs.; 12 - 22 AWG solid or stranded
Mounting Method DIN rail or surface mount (plug into OT08-PC socket)
Operating Temperature -20° to 70°C (-4° to 158°F)
Humidity 10 - 95% non-condensing per IEC 68-2-3
Dimensions 1.75 H x 2.38 W x 4.13 D in. (44.5 x 60.3 x 104.8 mm)
Weight (lbs/g) 0 Kg
Check Stock Yes
To request product environmental information, please complete the Product Environmental Information Request Form.