OVER VOLTAGE RELAY (P/N 138-5) - As Removed
P/N: 138-5
Category: Generator Control Units & Voltage Regulators
Shipping for this part is quoted to your address. We email you the total to approve before anything is charged.
Available Inventory
| Condition | Price | Stock |
|---|---|---|
| As Removed | $125.00 | 2 Available |
Product Description
The 138-5 is an overvoltage relay protecting aircraft DC electrical systems from charging circuit faults. Installed between the alternator and voltage regulator, it monitors bus voltage and trips to disconnect the charging circuit or alternator field when overvoltage is detected. This prevents damage to avionics, instruments, and the battery during regulator failure or system malfunction.
Installation requires proper wiring verification and compliance with aircraft maintenance manual specifications and FAA-approved data.
Please note: Product descriptions are provided for informational purposes. Always refer to your aircraft's Illustrated Parts Catalog (IPC) to verify part compatibility and specifications.
Frequently Asked Questions
What is the OVER VOLTAGE RELAY (P/N 138-5)?
The 138-5 is an overvoltage relay protecting aircraft DC electrical systems from charging circuit faults. Installed between the alternator and voltage regulator, it monitors bus voltage and trips to disconnect the charging circuit or alternator field when overvoltage is detected.
What conditions is the 138-5 available in?
The 138-5 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 138-5?
The 138-5 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 138-5?
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.
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