CASE STUDIES
Modern fifth wheels and travel trailers demand more from their electrical systems than ever before. With expanding use of solar charging, electric accessories, and growing circuit loads, OEMs needed a modular 12VDC power distribution solution that was compact, UL-listed, and field-serviceable — all while reducing installation complexity and warranty risk. Existing products often lacked serviceability or left solar integration as an afterthought.
Steiner developed a family of Modular Power Distribution Boxes, specifically engineered for RV trailer platforms. Built to handle up to 150 amps at 12VDC, these units integrate solar charging circuits, dedicated breakaway switch terminals, and modular circuit breakers within an impact-resistant, weather-sealed enclosure. The system simplifies battery wiring, increases safety, and future-proofs RVs for next-generation loads.
Three variants are available to support different model tiers and options:
Breakers Only
Breakers with Power Disconnect
Fifth Wheel or Travel Trailer Configurations
Each version leverages a shared patented design and core enclosure layout for streamlined production and consistency across RV product lines.
depending on model
Solar side port remains active even when the power disconnect is switched off — allowing battery maintenance during storage
Breakers, fuses, and disconnects can be added post-install without rewiring the OEM circuit harness
All units use automotive-style labeling, preconfigured grounding studs, and removable covers for fast, safe servicing
Dedicated terminal helps prevent miswiring and recalls related to trailer breakaway brake systems
Durable polymer housings mount in tow vehicle compartments and withstand outdoor exposure
and cost-optimized manufacturing
Steiner’s modular power distribution boxes have been adopted across multiple product lines by leading RV manufacturers. These boxes reduce installation labor, streamline service, and build customer confidence with intuitive layouts and clear circuit labeling. OEMs benefit from flexible configurations, global sourcing, and a field-proven platform that supports both present and future 12VDC needs.
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We’re no mere contractor for hire. When you work with us, you get a partner who’s invested in seeing your products succeed and your business flourish. Contact us today to see how we can help get your ideas off the ground!
