Dometic MPS-50US 50 Amp Multiplex Power Supply - Part# 9105303781

DometicSKU: 9105303781
Added to catalog: March 10, 2026
Last in stock: Apr 12, 2026

Sale price$99.99
|
In stock (1984 units), ready to be shipped
FREE Delivery Estimate April 22 – April 25
1-Hour Cancellation Window

1-Hour Cancellation Window

You'll have 1 hour after placing your order to update your shipping address or cancel completely.

After that, we begin coordinating with our vendors to fulfill your order — at that point, cancellations and address changes usually aren't possible.

If you're unsure about anything, please reach out before ordering or cancel within the window.

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.

100% Authentic OEM Parts

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.

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