Description
Ault 394-1089-00100 Power Module 20VAC 40VA Safety Isolating Transformer 4-Pin
The Ault 394-1089-00100 is a compact wall-mount safety isolating transformer, designated Power Module 1, that converts 120VAC mains power to a 20VAC low-voltage AC output. It is designed for indoor use and features a fixed AC input cord with a standard 2-prong wall plug and a captive output cable terminating in a 4-pin connector. The unit carries UL Listed (902R) and CSA certifications and is manufactured in the USA by Ault Inc.
Specifications & What's Included
- Manufacturer: Ault Inc. (Made in U.S.A.)
- Part Number: 394-1089-00100
- Product Designation: Power Module 1
- Transformer Type: Safety Isolating Transformer
- Input Voltage: 120 VAC
- Input Frequency: 50/60 Hz
- Input Current: 0.5 A
- Output Voltage: 20 VAC
- Output Power: 40 VA Maximum
- Output Connector: 4-Pin
- Input: Standard 2-prong AC wall plug (fixed cord)
- Indoor Use Only
- Certifications: UL Listed 902R, CSA Listed
- Includes: Unit with attached AC input cord and 4-pin output cable
Applications
Safety isolating transformers like this Ault Power Module 1 are used to provide low-voltage AC power to equipment while maintaining electrical isolation from the mains supply — a requirement in applications where user safety or circuit protection is a concern. The 20VAC output and 4-pin connector suggest this module was designed as a dedicated external power supply for a specific piece of OEM equipment, such as a point-of-sale terminal, access control reader, barcode scanner, industrial controller, or similar device. Ault Inc. (now part of SL Power Electronics) has historically manufactured power conversion products for OEM and industrial customers, and modules like this one are commonly found in embedded or proprietary system designs from the 1980s through 2000s. This unit is appropriate as a direct replacement for the same Ault part number in the original equipment it was designed to power.
This Ault 394-1089-00100 Power Module 1 (20VAC safety isolating transformer) has been inspected and is in good used condition. The housing shows light surface scuffing and dirt consistent with prior use, as visible in the photos. The AC input cord and 4-pin output cable are intact with no visible damage. The rating label on the bottom is fully legible. Please view our photo set and contact us if you have any questions. Please note: We have multiple units in stock — yours may not be the one shown in the photos, however, it will be similar in condition and function.
Warranty Information
Additional Information
Brand: |
Ault |
Model: |
394-1089-00100 |
MPN: |
394-1089-00100 |
Type: |
Safety Isolating Transformer / Power Module |
SKU: |
41501 |
Product Name: |
Power Module 1 |
Input Voltage: |
120 VAC |
Input Frequency: |
50/60 Hz |
Input Current: |
0.5 A |
Output Voltage: |
20 VAC |
Output Power: |
40 VA Max |
Output Connector: |
4-Pin |
Input Connector: |
Standard 2-prong AC wall plug (NEMA 1-15) |
Transformer Type: |
Safety Isolating Transformer |
Indoor/Outdoor Use: |
Indoor Use Only |
Certifications: |
UL Listed 902R, CSA Listed |
Country/Region of Manufacture: |
United States |
Condition: |
Used – Inspected and in Good Condition |
Seller Notes: |
Includes attached AC power cord and 4-pin output connector cable. |
Condition Notes: |
Ault 394-1089-00100 Power Module 20VAC inspected and in good used condition. Housing shows light scuffing; AC cord and 4-pin output cable intact. Rating label fully legible. Contact us with any questions. |
California Prop 65 Warning: |
WARNING: This product can expose you to chemicals including lead and lead compounds, and DEHP (a phthalate), which are known to the State of California to cause cancer and birth defects or other reproductive harm. Go to P65Warnings.ca.gov |
