Description
F&R Enterprises 2T23-17 Power Supply Transformer Rectifier 208/240V 20/24V CT
This is a custom open-frame power supply assembly built around an F&R Enterprises model 2T23-17 transformer, paired with a bridge rectifier and a large Mallory electrolytic filter capacitor, all mounted on a metal chassis. The assembly steps down 208V or 240V AC input to dual secondary outputs: a center-tapped 20V AC winding at 0.15A and a 24V AC winding (rectified to approximately 30V DC) at 5A. The multi-pin connector block provides organized access to all secondary taps.
Specifications & What's Included
- Manufacturer: F&R Enterprises, San Francisco, CA
- Transformer Model: 2T23-17
- Primary Input: 240V (tap 3), 208V (tap 2), 0V common (tap 1)
- Input Frequency: 50/60 Hz
- Secondary Output 1: 24V AC at 5A (tap 8); rectified ~30V DC
- Secondary Output 2: 20V AC center-tapped at 0.15A (taps 6/7/8); CT at tap 7
- Filter Capacitor: Mallory CG23U50C1 — 2000 µF, 50V DC
- Rectifier: bridge rectifier on chassis
- Wiring: multi-conductor flying leads terminating to a multi-pin connector block
- Form Factor: open-frame metal chassis (panel/bracket mount)
- Country of Manufacture: United States
Applications
Custom transformer-rectifier assemblies like this 2T23-17 are built for OEM and industrial equipment where off-the-shelf supplies don't match the specific voltage and current requirements of the target system. The dual secondary design — a center-tapped low-current winding for logic or control circuitry and a higher-current rectified output for motors, solenoids, or analog stages — is a common architecture in industrial control panels, scientific instruments, and lab equipment from the 1970s through the 1990s. The Mallory CG23U50C1 capacitor is a classic American-made industrial-grade electrolytic, rated 2000 µF at 50V, suitable for bulk DC filtering on the rectified output. These assemblies are still useful today as replacement power stages in legacy equipment or as building blocks for custom power projects requiring dual isolated outputs from a 208V or 240V AC supply.
This F&R Enterprises 2T23-17 power supply assembly — comprising the transformer, bridge rectifier, and Mallory filter capacitor mounted on a metal chassis — has been inspected and appears to be in good used condition. The unit has not been bench-tested; output ratings are as labeled on the transformer (20V AC center-tapped at 0.15A and 24V AC / ~30V DC at 5A). The transformer shows the patina and surface aging typical of older industrial equipment, and the wiring and multi-pin connector appear intact. A 'TESTED' sticker with initials is visible on the base plate, though we have not independently verified operation at our facility. Please view our photo set and contact us if you have any questions.
Warranty Information
Additional Information
Brand: |
F&R Enterprises |
Model: |
2T23-17 |
MPN: |
2T23-17 |
SKU: |
35027 |
Type: |
Power Supply Assembly (Transformer + Rectifier + Filter Capacitor) |
Primary Voltage: |
208V (tap 2), 240V (tap 3), 0V (tap 1) |
Secondary Voltage: |
24V (tap 8), 20V CT (taps 6/7/8), 0V (tap 7) |
Secondary Current: |
5A @ 24V; 0.15A @ 20V CT |
Input Frequency: |
50/60 Hz |
Output DC Voltage (approx.): |
~30V DC (after rectification of 24V AC) |
Capacitor: |
Mallory CG23U50C1, 2000 µF, 50V DC |
Manufacturer Location: |
San Francisco, CA |
Country/Region of Manufacture: |
United States |
Form Factor: |
Open-frame chassis / panel mount |
Wiring Termination: |
Flying leads with multi-pin connector block |
Condition: |
Used – Inspected |
Seller Notes: |
Includes transformer, rectifier, and filter capacitor on chassis. Not bench-tested. |
Condition Notes: |
F&R Enterprises 2T23-17 power supply assembly inspected and in good used condition. Not bench-tested at our facility; output ratings per transformer label: 20V CT / 0.15A and ~30V DC / 5A. Wiring and connector appear intact. |
