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Uoa-110-Dka - Single Phase Under Voltage Monitor/Relay - Atc Diversified (Sensert Connected)

Brand: Atc Diversified
Part #: Uoa-110-Dka
$192.17

List Price: $208.37
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Description / Uoa-110-Dka - Single Phase Under Voltage Monitor/Relay - Atc Diversified (Sensert Connected)

Single Phase Under Voltage Monitor/Relay
ATC Diversified • Industrial Electrical Controls • Sensert Connected
Uoa-110-DkaPhase Monitor

ATC Diversified Uoa-110-Dka replacement part, single phase under voltage monitor/relay, ATC phase monitor industrial control

ATC Diversified phase monitor/relay for three-phase power systems. Continuously monitors phase voltage for loss, unbalance, incorrect sequence, and over/under voltage conditions protecting motors, compressors, and equipment from phase fault damage.

⚠ Installation Note

Verify the phase monitor input voltage rating matches your supply voltage before installation. Incorrect voltage rating will result in immediate device failure.

🔍 Application & Benefits

✖ Problems It Solves

  • ✖ Three-phase motor damaged by single-phasing (loss of one phase)
  • ✖ Motor running hot from phase voltage unbalance
  • ✖ Equipment connected in incorrect phase rotation sequence
  • ✖ Motors failing prematurely from undetected phase faults

✓ Key Benefits

  • ✓ Detects phase loss, unbalance, incorrect sequence, and voltage faults before damage occurs
  • ✓ Trips an output relay to disconnect equipment when a phase fault is detected
  • ✓ Automatic or manual reset after fault clears depending on model
  • ✓ LED diagnostics identify the specific fault type quickly

🔧 Installation Overview

  1. Mount on DIN rail or panel per installation instructions
  2. Connect phase monitor to the three-phase supply being monitored
  3. Wire output relay contacts into the motor starter or contactor control circuit
  4. Set voltage and unbalance trip thresholds if adjustable on your model
  5. Apply power and verify LED status indicates all phases are normal
  6. Test trip function by simulating a phase loss or unbalance per the product manual

📋 Specifications

DetailValue
Part NumberUoa-110-Dka
BrandATC Diversified Electronics
Product TypePhase Monitor
CategoryIndustrial Electrical Controls

❓ Common Questions

Q: What is phase loss and why is it dangerous?

A: Phase loss (single-phasing) occurs when one of the three supply phases is lost. A three-phase motor running on two phases attempts to draw full load from the remaining two phases, causing extreme overheating and rapid winding failure. A phase monitor detects the missing phase in milliseconds and trips the output relay before damage occurs.

Q: What is phase unbalance?

A: Phase unbalance occurs when the voltage on the three phases is not equal. Even a 3.5% voltage unbalance can cause a 25% increase in motor winding temperature. ATC Diversified phase monitors measure and compare all three phase voltages and trip if unbalance exceeds the set threshold.

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