Viking Electronics PS-1A 120VAC to 13.8VAC Power Supply

Overview

The Viking Electronics PS-1A is a dedicated AC-to-AC power supply delivering 120V AC input and 13.8V AC output via a 2.1mm barrel connector — the correct replacement or spare power source for Viking Electronics equipment requiring a 13.8V AC supply rail. If your Viking unit calls for a 2.1mm plug and 13.8V AC, the PS-1A is the direct-fit part. Its companion model, the PS-1, ships without a plug for hardwired installs; the PS-1A adds the 2.1mm barrel connector for plug-in deployment.

Compatibility

The PS-1A is designed for Viking Electronics products that require a 13.8V AC power input via a 2.1mm barrel connector. It is referenced in the PI-1A product manual, making it the specified supply for the PI-1A paging intercom — a voice-activated (VOX) relay unit with DPDT contacts for background music muting during paging. Verify your Viking unit's input voltage and connector spec before ordering: this is an AC output supply (13.8V AC), not a DC adapter — equipment requiring 12V DC or a DC barrel plug requires a different power supply. The PS-1 is the no-plug variant for the same voltage rail.

Installation Notes

Input is standard 120V AC North American mains. Output connector is a 2.1mm barrel plug — confirm your Viking unit accepts a 2.1mm center-positive or center-negative barrel before installation. Operating environment: 32°F to 90°F (0°C to 32°C), 5% to 95% non-condensing humidity. Keep the supply in a conditioned indoor space; it is not rated for outdoor or uncontrolled-temperature enclosures. Shipping dimensions are 8 × 6 × 6 inches; unit dimensions are 4.38" × 2.97" × 1.38".