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The Model 201A-AU is the newest, most versatile, plug-in style voltage monitor designed to protect 3-phase motors from damaging power conditions. Its wide operating range combined with UL, cUL and CE compliance enables quick access to domestic and global markets.

SymCom 201A-AU & 201-575-AU Three-Phase Voltage Monitor Distributor

Models 201A-AU & 201-575-AU

Installation Instructions

A unique microcontroller-based voltage and phase-sensing circuit constantly monitors the 3-phase voltages to detect harmful power line conditions. When a harmful condition is detected, the MotorSaver's output relay is deactivated after a specified trip delay. The output relay reactivates after power line conditions return to an acceptable level for the specified restart delay. The trip and restart delays prevent nuisance tripping due to rapidly fluctuating power line conditions.

If you are looking for SymCom 201A-AU Voltage Monitors, please call us on (800) 894 - 0412 or email us at we will do our best to help you find the 201-575-AU voltage monitor that you are looking for at the most competitive prices possible. If you are searching for 201A-AU voltage monitor technical information (data-sheets) please use the datasheets or product selection guide page links.

Protects 3-Phase Motors from:

  • Loss of any phase
  • Low voltage
  • High voltage
  • Voltage unbalance
  • Phase reversal
  • Rapid cycling

The Model 201A-AU automatically senses whether it is connected to a 190-240V, 60Hz system, a 440-480V, 60Hz system, or a 380-416V, 50Hz system. An adjustment is provided to set the nominal line voltage from 190-240 or 380-480VAC. Other variable settings include a 1-30 second trip delay, manual or 1-500 second restart delay, and 2-8% voltage unbalance trip point.


  • Compact design
  • Standard manual, 1-500 sec. variable restart delay
  • Standard 2-8% variable voltage unbalance
  • Standard 1-30 sec. variable trip delay
  • DIN rail mounted octal base
  • Optional external manual reset
  • One 10 amp general purpose form C relay
  • UL and cUL listed
  • CE compliant
  • 5-year warranty
  • Made in USA

SymCom's MotorSaver Model 201A-AU is an auto ranging plug-in voltage / phase monitor designed to protect 3-phase motors regardless of size. It is used on 190-480VAC (475-600 for Model 201-575-AU), 50/60 Hz motors to prevent damage caused by single-phasing, low voltage, high voltage, phase reversal, or voltage unbalance conditions.

Our industrial factory automation supplies distributors warehouse in Boise, Idaho stocks some SymCom products enabling us to further assist you in finding the correct model 201-575-AU three phase voltage monitor for your application in the Pacific Northwest USA. We can proudly say that we carry more SymCom/SSAC/Littelfuse in stock than any other SymCom distributors in the Pacific Northwest region.

Whether we have model 201A-AU 3-phase voltage monitors in stock in Boise, Idaho or need to get them from SymCom; Clearwater Tech can get 201-575-AU voltage monitor to you fast and save money!

It will be very helpful if you have the SymCom 201A-AU voltage monitors part numbers ready, then our sales representatives can provide you with a pricing and availability quote for 201-575-AU 3-phase voltage monitor that you are looking for in seconds.

If you do not have the part numbers for SymCom 201A-AU three-phase voltage monitors, our application engineers will be able to help you figure out the part numbers and get the price quote to you as soon as possible.

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