GOLDEN GI-1A-12DH Power Relay Reliable and Versatile 4-Pin Relay

GOLDEN GI-1A-12DH Power Relay – Avalon & Whatsminer M10 PSU Replacement

The GOLDEN GI-1A-12DH is a 4-pin power relay designed as a direct replacement for faulty relays in Avalon power supplies and the Whatsminer M10 PSU. It features 1,000MΩ insulation resistance (500VDC), a working time of ≤10ms and release time of ≤5ms at rated voltage. The relay operates from -40°C to 105°C at 5–85% RH, mounts via PCB terminals and weighs just 5.6g (18.5×10.2×15.9mm).

Role in Mining PSUs

The relay controls the main power path or standby circuit in the PSU. When it fails — contacts welded shut or coil open — the PSU either stays permanently on (ignoring shutdown commands) or won't start at all. Replacing the relay restores normal PSU power sequencing and shutdown behaviour.

Replacement Procedure

Disconnect mains and discharge capacitors. Locate the relay on the PSU control board — it is a small 4-pin PCB-mount component. Desolder the through-hole pins, remove the old relay, insert the new GI-1A-12DH with correct orientation and solder. Verify normal PSU startup and shutdown behaviour.

GI-1A-12DH Relay Specifications

Related PSU Repair Components

• 14D681K Varistor – Avalon PSU3300-03
• 18P Data Cable – Whatsminer PSU Connection
• C19 US Power Cord – Avalon / Whatsminer PSU
• Avalon PSU Fan Simulator – Immersion Cooling

Repairing Avalon or Whatsminer PSUs? Contact us at contact@lys-sz.com for relays, varistors and all PSU components.

Worldwide shipping from our Shenzhen warehouse.