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Power Monitoring and Protection
Power Monitoring and Protection

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201A

MotorSaver™ Three-Phase Voltage Monitor

The MotorSaver™ 201A Three-Phase Voltage Monitor is an autoranging plug-in voltage monitor designed to protect three-phase motors regardless of size. It is used on 190-480 VAC 50/60 Hz motors to prevent damage caused by single phasing, low voltage, phase reversal, or voltage unbalance. To detect harmful power line conditions, the unique microprocessor-based voltage and phase sensing circuit constantly monitors the three-phase voltages. When a harmful condition is detected, the Model 201A MotorSaver's output relay is deactivated after a fixed trip-delay time period. The output relay reactivates after power line conditions return to an acceptable level for a fixed restart delay time. The trip delay prevents nuisance tripping due to rapidly fluctuating power line conditions.


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Features
  • Protection of three-phase motors against single phasing, low voltage, phase reversal, and voltage unbalance
  • DIN rail- or surface-mounted socket
  • UL and ULC listed, CE certified
  • Bicolor LED indication of normal and fault conditions
  • Single-phase condition detection regardless of regenerated voltages
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Specifications

Supply Watts:5W

Frequency:50* or 60 Hz

Transient Protection:2500V for 10 ms

Line Voltage Monitored:Three-phase, 190-480 VAC, adjustable

Low Voltage Trip:90% of setpoint

Low Voltage Reset:93% of setpoint

Reset Delay Time after Fault:2 seconds

Reset Delay Time after Power Loss:2 seconds

Trip Delay Time Low Voltage:4 seconds

Trip Delay Time Phase Fault:2 seconds

Trip Delay Time Unbalance:2 seconds

Voltage Unbalance Reset:4.5%

Voltage Unbalance Trip:6%

Dimensions:2.37"W x 1.75"H x 4.25"L (6.0 x 4.4 x 10.8cm)

Weight:0.56 lb (0.25 kg)

Approvals:UL listed file #E68520, CE certified

Warranty:5 years

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Certifications






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QtyModelDescriptionIn StockList PriceInternet Price
201A 3PH VOLT MONITOR 190-480V SPDT In Stock202.64162.11
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