Description
When your phone system needs reliable talk battery and ring voltage without a full PBX infrastructure, the Viking PS-48-RGA delivers exactly what's missing — 48V DC talk battery and 90V ring voltage in a compact wall mount enclosure.
The PS-48-RGA generates standard 48V DC talk battery alongside a 90V 20 Hz sine wave ring voltage rated up to 10 REN, giving a single unit the ability to sequence up to 30 ringing phones. It ships complete with a plug-in UL listed power supply, so there's no hunting for compatible adapters or extra hardware. The four-position screw terminal keeps wiring simple and clean, and the wall mount form factor fits neatly in telecom closets or equipment rooms.
Common applications include electronic key systems, paging systems, and OPX installations where standard telephone talk battery and ringing power simply aren't available from the existing infrastructure. If you need to extend phone system capabilities to a remote location or standalone equipment, this unit covers both power requirements in one small package.
Our Expert Take: Keep in mind that ringing capacity depends on how much of the DC load is in use — at full 48V DC load you get 5 REN, but when DC power is not being used you get the full 10 REN. If you're planning to sequence the maximum number of phones, factor your DC draw carefully. This is a straightforward, no-frills solution that works well in smaller key system expansions and OPX setups where simplicity and reliability matter more than advanced features.
Key Features
- Provides 48V DC talk battery (nominal, up to 150mA maximum current)
- Generates 90V AC @ 20 Hz sine wave ring voltage – up to 10 REN
- Capable of sequencing up to 30 ringing phones
- 5 REN ringing capacity with DC power fully loaded; 10 REN with DC power not used
- Compact wall mount enclosure with plug-in UL listed power adapter included
- Simple 4-position screw terminal connections
- Suitable for electronic key systems, paging systems, and OPX applications
- 120V AC input with UL listed 13.8V AC 1.25A adapter
Technical Specifications
- Input Power: 120V AC / 13.8V AC 1.25A, UL listed adapter included
- DC Output: 48V DC nominal, 150mA maximum current
- Ringing Output: 90V AC @ 20 Hz, up to 10 REN (5 REN with DC fully loaded)
- Connections: 4-position screw terminal
- Dimensions: 5.25″ x 3.5″ x 1.73″ (135mm x 90mm x 45mm)
- Operating Temperature: 32°F to 90°F (0°C to 32°C)
- Humidity: 5% to 95% non-condensing