1-Phase Enphase Q Relay

Manufacturer Number: Q-RELAY-1P-INT

Reliable Grid Disconnection for Enphase Systems

The Enphase Q Relay (1-Phase) serves as a critical safety component in Enphase solar installations.
It acts as an intelligent grid disconnection device, designed to isolate Enphase microinverters from the AC grid during abnormal operating conditions and reconnect them automatically once the grid returns to normal.

Key Features

• Single-phase operation with integrated switching capability.

• Automatic disconnection and reconnection based on voltage and frequency thresholds.

• Built-in detection for DC injection, ensuring compliance with VDE V 0126-1-1 standards.

• Operates in coordination with the Enphase IQ Gateway to meet all grid disconnection requirements.

• Provides line and neutral conductor isolation for enhanced system safety.

Operation

During grid disturbances or abnormal voltage/frequency conditions, the Q Relay automatically disconnects the Enphase microinverters from the AC network.
Once normal grid parameters are restored, it safely reconnects the system without manual intervention — ensuring continuous, compliant, and reliable solar power operation.