The Dometic MPS-50US is a 50-amp multiplex power supply designed for RV owners who need reliable, centralized power management and distribution. This OEM component integrates with Dometic's multiplex system to manage 12-volt auxiliary power, battery charging, and load distribution across your RV's electrical systems. Essential for newer Dometic-equipped RVs relying on multiplex technology for climate control, slide-outs, and auxiliary functions.
- 50-amp capacity for high-demand RV electrical systems
- Multiplex-compatible design integrates with Dometic control systems
- Manages 12-volt auxiliary power distribution and battery charging
- OEM Dometic component ensures factory compatibility
- Supports climate control, slide-out, and accessory circuits
- Compact design fits standard RV power compartments
| Specification | Detail |
|---|---|
| Part Number | 9105303781 |
| Manufacturer | Dometic |
| Amperage Rating | 50 Amp |
| System Type | Multiplex Power Supply |
| Voltage | 12-Volt DC |
| Application | RV Power Management and Distribution |
Frequently Asked Questions
Q: How do I know if my RV uses the MPS-50US?
A: The MPS-50US is used in RVs with Dometic multiplex electrical systems. Check your RV's electrical panel or owner's manual for Dometic multiplex components. If your RV has integrated Dometic controls for climate, slides, and awnings, you likely have a multiplex system.
Q: Can I install this myself?
A: While experienced RV owners can replace this unit, it involves working with your RV's main power distribution. We recommend having a qualified RV technician handle installation to ensure proper wiring and system integration.
Q: What's the difference between the MPS-50US and other Dometic power supplies?
A: The MPS-50US is specifically designed for multiplex systems with 50-amp capacity. Other Dometic power supplies may have different amp ratings or be designed for non-multiplex systems. Always verify your part number before ordering.
Why Elkhart RV Parts? We specialize in hard-to-find Dometic RV replacement parts and ship directly from Elkhart, Indiana—the RV capital of the world. Every part is genuine OEM Dometic stock, backed by expert support to help you find the exact component your RV needs.
| Product_name | Dometic MPS-50US Multiplex Power Supply 50 Amp |
|---|---|
| Brand | Dometic |
| Product_type | Power Supply / Power Management |
| Amperage | 50 Amp |
| Voltage | 12V |
| System_type | Multiplex |
| Compatible_systems | Dometic S3Dometic S4Later generation |
| Primary_function | Power distribution and conversion |
| Category | RV Parts |
| Subcategory | Electrical / Power Management |
| New_arrival | true |
| Oem_part | true |
Factory-Fresh OEM Parts — the same brands installed in new RVs straight from Elkhart. Genuine, name-brand components made to order — never generic, never outdated. Sourced directly from the original RV manufacturers for perfect fit and factory-level quality.


