Parallax Power Supply Inverters
Parallax Power Supply Inverters: Reliable DC Power for the Road
When it comes to managing electrical power in a recreational vehicle, few names carry as much weight as Parallax Power Supply. With over 50 years of experience in the RV electrical industry, Parallax has built a reputation for producing rugged, dependable power conversion products that RV owners and OEM manufacturers alike have come to trust. Their presence in the inverters and power conversion category reflects that same commitment to quality and long-term reliability.
A Heritage of Power Conversion Innovation
Parallax Power Supply's roots trace back through some of the most respected names in RV electrical history, including Phillips, BW Manufacturing, and MagneTek™. This lineage gives Parallax a depth of engineering knowledge that newer offshore manufacturers simply cannot match. Their products have always been manufactured in North America and built with steel enclosures — the same standard used in residential and industrial electrical systems — ensuring durability that holds up to the vibration, temperature swings, and constant demand of life on the road.
TempAssure™ Technology and Three-Stage Charging
One of the standout technologies behind Parallax power conversion products is the proprietary TempAssure™ adaptive multistage charging system. This system uses Bulk, Absorption, and Float current stages to optimize battery charging based on real-time conditions, helping to extend battery life and ensure your house batteries are always properly maintained. The TempAssure™ module is available as an upgrade option on several product lines, including the RU Series replacement units, giving older RV setups a path to modern charging performance.
Product Lines to Know
Parallax offers several well-regarded series that serve power conversion and inversion needs across a range of RV configurations:
- 8300 Series Power Centers — A full AC/DC distribution solution with three-stage converter/charger, 30-amp shore service, and filtered DC outputs ranging from 45 to 75 amps. Active power factor correction on select models allows the converter to run on a standard 15A branch circuit.
- 5300 Series Power Centers — Designed for 50-amp shore services, delivering filtered DC outputs of 55, 65, and 75 amps inside a durable steel enclosure.
- 4400 ParaMode Series — A streamlined, modular deck-mount converter/charger featuring a compact design, spike- and surge-free DC output, and rugged steel construction.
- RU Series Replacement Units — Direct replacements for legacy Parallax, MagneTek™, and B-W Manufacturer converter sections, featuring updated circuitry, reduced dimensions, and TempAssure™ upgrade compatibility.
Built for the RV Lifestyle
Every Parallax power conversion product undergoes extensive cycle testing before it leaves the factory. Innovative diagnostics and controls are built in to maximize field reliability, giving RV owners confidence whether they're plugged into shore power at a campground or managing battery loads off the grid. The result is a product line that continues to be specified by RV manufacturers and trusted by do-it-yourself upgraders across North America.
Browse the full selection of inverters and power converters available, or explore the complete Parallax Power Supply catalog to find the right solution for your rig.