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Series: 460 SP

460-SP Series – Single-Phase Voltage Monitor
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The 460-SP (460-xxx-SP) series is a single-phase voltage monitor designed to protect motors from damaging power conditions. The 460-100-SP is used on 95–120 V ac, 50*/60 Hz single-phase motors, and the 460-200-SP is used on 190–240 V ac, 50*/60 Hz single-phase motors to protect them from damaging high- and low-voltage conditions. An adjustment knob allows the user to set a 1–500 second restart delay. The variable restart delay is also a power-up delay and can be utilized to stagger-start motors on the same system.

The unique microcontroller-based, voltage-sensing circuit constantly monitors the voltage 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 and a specified amount of time has elapsed (restart delay). The trip delay prevents nuisance tripping due to rapidly fluctuating power line conditions.

*Note: 50 Hz will increase all delay timers by 20 %

  • Proprietary microcontroller-based circuitry
  • Fixed trip delay 4 seconds
  • Adjustable restart delay (1–500 s)
  • Advanced LED indication
  • DIN-rail or surface-mountable
  • Constant monitoring of voltage to detect harmful power line conditions – even before the motor starts
  • Prevents nuisance tripping due to rapidly fluctuating power line conditions
  • Allows staggered start-up of multiple motors on the same system to prevent a low-voltage condition
  • Provides diagnostics that can be used for troubleshooting and to determine relay status
  • Allows flexibility for panel assembly

460 SP Parts

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460 SP Applications

Highlights Section

  • Fan motors
  • Air conditioners
  • Compressors
  • Heat, well, and sump pumps
  • Small conveyer motors