OVER VOLTAGE RELAY (P/N dg04) - As Removed

The dg04 is an overvoltage relay that monitors 28-volt electrical bus voltage in aircraft alternator systems. When voltage exceeds safe limits—typically during regulator runaway events—the relay disables the voltage regulator and removes alternator field excitation to protect avionics and electrical components from damage. Installed in general aviation and corporate aircraft electrical systems, this relay provides critical protection against voltage spikes that could destroy sensitive avionics, instruments, and control systems.

Installation and trip/restore settings must be verified per the aircraft maintenance manual and applicable FAA approvals or supplemental type certificate (STC) data.

What is the OVER VOLTAGE RELAY (P/N dg04)?

The dg04 is an overvoltage relay that monitors 28-volt electrical bus voltage in aircraft alternator systems. When voltage exceeds safe limits—typically during regulator runaway events—the relay disables the voltage regulator and removes alternator field excitation to protect avionics and electrical components from damage.

What conditions is the dg04 available in?

The dg04 is currently available in the following conditions: As Removed. Each condition reflects the part's maintenance history and certification status per FAA standards.

How do I get pricing for the dg04?

The dg04 requires a custom quote. Submit a Request for Quote (RFQ) through our website or call our sales team at (904) 998-9101 for immediate pricing assistance.

Do you offer expedited shipping for the dg04?

Yes, we offer same-day processing on in-stock items and provide 24/7 AOG (Aircraft on Ground) support for urgent needs. Standard, expedited, and overnight shipping options are available.