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The 460 is a 3-phase voltage monitor that protects 190-480VAC, 50/60Hz motors regardless of size. The product provides a user selectable nominal voltage set point and the voltage monitor automatically senses line voltage.
This unique microcontroller-based voltage and phase-sensing device constantly monitors the 3-phase voltages to detect harmful power line conditions such as low, high, and unbalanced voltage, loss of any phase, and phase reversal. When a harmful condition is detected, the 460 output relay is deactivated after a specified trip delay. The output relay reactivates after power line conditions return to an acceptable level for a specified amount of time (restart delay). The trip and restart delays prevent nuisance tripping due to rapidly fluctuating power line conditions.
All 460 models feature adjustable 1-30 second trip delay, 1-500 second restart delay, 2-8% voltage unbalance trip point, and one form C contact except where noted.

  • Input Voltage (V): 190 to 480VAC
  • Maximum Input Power: 6W
  • Input AC Line Frequency (Hz): 50/60Hz (50Hz will increase all delay timers by 20%.)
  • Output Form: Form C
  • Output Load Rating (VA): Pilot Duty: 480VA @ 240VAC B300; General Purpose: 10A @ 240VAC
  • Restart Delay Range: 1 - 500s adjustable
  • Trip Delay Range: Over Under and Unbalanced Voltage: 1 - 30s adjustable; Single-Phase Faults (>25%UB): 1s fixed
  • Overvoltage Trip Voltage (%): 208 to 528VAC
  • Overvoltage Reset Voltage (%): Trip setting minus 3%
  • Undervoltage Trip Voltage: 185 to 480VAC
  • Undervoltage Reset Voltage (%): Trip setting plus 3%
  • Voltage Unbalance Trip Point (%): 6%
  • Voltage Unbalance Reset (%): 5%
  • Protection Class: IP20 NEMA 1 (finger safe)
  • Termination Type: Torque: 6in-lbs; Wire: Stranded or solid 12-20AWG one per terminal
  • Mounting Method: 35mm DIN rail or Surface Mount (#6 or #8 screws)
  • Operating Temperature: -20° to 70°C (-4° to 158°F)
  • Storage Temperature (F/C): -40° to 80°C (-40° to 176°F)
  • Humidity: 10-95% non condensing per IEC 68-2-3
  • Dimensions: 3.50 in H x 2.08 in W x 2.35 in D (88.9 x 52.9 x 59.7 mm)
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Manuals (1)
Product Type:

Voltage Meter




Form C


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