Details

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The Crouzet 84873026 HWUA is a three-phase voltage monitoring relay designed for industrial applications requiring protection against phase imbalances, sequence errors, and over/undervoltage conditions. This relay is particularly suitable for systems operating within the 220–480 VAC range.

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🔧 Key Specifications

• Model: 84873026 HWUA

• Voltage Range: 3-phase 220–480 VAC

• Relay Output: DPDT (Double Pole Double Throw)

• Contact Rating: 5A, 250V AC/DC

• Mounting: 35 mm DIN rail

• IP Rating: IP20 (connection), IP30 (housing)

• Operating Temperature: -20°C to +50°C

• Time Delay Settings:

  • Startup Delay: 0.5 seconds

  • Alarm Delay: 0.2 seconds

  • Threshold Crossing Delay: 0.1 to 10 seconds

• Certifications: UL, CSA, RoHS

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⚙️ Monitoring Functions

The HWUA relay offers comprehensive monitoring capabilities

• Phase Sequence Monitoring: Detects incorrect phase order.

• Phase Failure Detection: Identifies total phase loss.

• Phase Asymmetry Detection: Monitors voltage imbalance between phases.

• Overvoltage and Undervoltage Detection: Monitors voltage levels exceeding or falling below set thresholds.