Loading ...

Time Mark 21 3-Phase Automatic Reset Monitor With Adjustable Trip, Restart Delay, 190 to 480 VAC, 8 Pins, SPDT


  • Locke Part #: Q1339
  • Mfg. Part #: 21
  • Manufacturer: Time Mark
  • UPC: 662917001350

For pricing information and availability, login to your account with your customer number and home branch. Or contact your local branch.

  • The model 21 is a microcontroller based universal 3-phase monitor for protecting 3-phase motors from abnormal power conditions
  • It can detect under voltage, over voltage, voltage unbalance, reverse phase and single phasing even when regenerated voltage is present
  • The model 21 includes adjustable trip and restart delays to prevent nuisance tripping during power fluctuations and short cycling in compressor applications
  • The LED status indicators and adjustment pots for Voltage Adjustment, % Unbalance, Restart Delay and Trip Delay are mounted on the front of the unit for easy access
  • The model 21 does not require a neutral connection and can be used on either Wye or Delta systems
  • Application: Phase Loss, Phase Reversal, Over/Under Voltage and Voltage Unbalance Applications
  • Contact Configuration: SPDT
  • Country of Origin: US
  • Dimensions: 3.53 in L x 2.45 in W x 1.77 in D
  • Display Type: LEd
  • Frequency Rating: 50/60 Hz
  • Mfg Standards/Approvals: cULus Recognized
  • Mounting Type: Socket
  • Number of Pins: 8
  • Series: 21 Series
  • Type: 3-Phase Automatic Reset
  • Voltage Rating: 190 to 480 VAC
  • Warranty: 5 yr