Phase Loss Failure Sequence Three-Phase Unbalance and Over/Under Voltage Protection Relays

Phase Loss Failure Sequence Three-Phase Unbalance and Over/Under Voltage Protection Relays. Comprehensive Protection: Protects motors from open-phase, phase sequence errors, voltage imbalance, and over/under voltage. Adjustable Voltage Settings: HHD10-D model features panel-adjustable over/under voltage thresholds and delay times. Wide Voltage Tolerance: Works with 380V AC 50Hz power supply, allowing 85% to 110% voltage fluctuations. DIN-Rail Installation: Designed for direct installation on DIN-rails for easy integration into control cabinets. High Electrical Life: Rated for 100,000 electrical switching cycles for long-term reliable operation. Robust Contact Capacity: Supports 3A AC250V resistive load capacity for effective motor control circuit switching. Flexible Delay Options: Offers adjustable delay times from 0.5s to 10s depending on the specific protection mode.