The RB Series is a pulse width-modulated DC to DC converter that provides regulated +28 VDC up to 5.0 amperes. The converter transforms an unregulated input from a 12V battery to a regulated +28 VDC output in a bootstrap mode.
The Model RB Series is primarily intended for use in an aircraft with 12 VDC battery system to operate 28 VDC equipment (especially during periods when the battery is not charged).
- State of the art design for regulation and positive logic for output overvoltage protection.
- Output is adjustable to 28 2 VDC via an internal trim pot.
- Designed to meet various applicable portions MIL-STD 704 notice 3, MIL-STD-202 and MIL-T-5422F class 1A.
- The Model RB Series is serviceable, small and lightweight (110 watts per pound and 5.8 watts per cubic inch for the RB-126)
Product Codes | |
|---|---|
| Mfr Part No: | RB125 |
| ECCN: | 3A225 |
| SCHEDULE B CODE: | 8504.40.0018 |
| TSO: | C71 |
- Stock: Out of Stock - On Backorder
- Manufacturer Part #: RB125
Aircraft Fitment Finder
Returns & refund summary
- 30-day return window — with prior return authorization, unopened in original packaging.
- Restocking fee: 20% on unopened items, 30% on open-box items.
- Refund processing fee: 5.51% applies to all refunds (returns, cancellations, core-fee refunds) regardless of reason.
- Return shipping: paid by buyer.
- Non-returnable categories: installed/used parts, special-order or rebuilt items, programmed items (incl. ELTs), batteries, AOG-priority orders, international orders.
Full terms: Return Policy.
Authenticity & authorization
All parts sold by American Aviation Parts are genuine factory products sourced through authorized distribution channels. Our authorization status varies by brand — for some brands we are a direct authorized dealer; for others we are an independent reseller through authorized distribution. Either way, the part you receive is the same factory product, with standard documentation available on request.
See our full Manufacturer Authorizations page for the current per-brand status.
Need traceability paperwork?
If your installation requires FAA Form 8130-3, manufacturer Certificate of Conformance, or other traceability documentation, please call 1-877-722-8727 or email [email protected] before placing the order so we can confirm what is available for this part.
Shipping
Standard ground, expedited, and AOG shipping options are available at checkout. Full shipping-cost tiers and timelines are published on our Delivery Information page.
