Xantrex Inline Transfer Relay f/PROwatt SW Review

My Real Take on the Xantrex Inline Transfer Relay f/PROwatt SW

As someone who has spent over a decade wrestling with gear in every conceivable environment – from the sterile hum of a lab to the grit of a workshop, and the unforgiving demands of fieldwork – I’m always on the lookout for components that simplify complex systems. The Xantrex Inline Transfer Relay f/PROwatt SW is one such device that piqued my interest. It’s designed to seamlessly switch between shore power and an inverter’s AC output, a crucial function for any mobile power setup. My existing setup was a bit cobbled together, requiring manual intervention to connect or disconnect shore power when the inverter was active, a process that was not only inconvenient but also carried a small risk of error. This transfer relay promised to automate that switch, offering a cleaner and more reliable solution. Upon unboxing, the unit presented itself with a utilitarian black casing; it feels robust enough for its intended purpose, without any unnecessary bells and whistles. I briefly considered a more integrated switch panel, but the inline nature of this Xantres unit offered a more straightforward installation for my specific application. My initial impression was one of practical utility, a quiet promise of smoother operation for my mobile power system.

Real-World Testing: Putting **Xantrex Inline Transfer Relay f/PROwatt SW** to the Test

First Use Experience

I integrated this inline transfer relay into a small, mobile workstation I’d set up in my garage, primarily for powering various diagnostic tools and charging equipment. The primary test scenario involved cycling between grid power (shore power) and the ProWatt SW inverter multiple times throughout a day of tinkering. Connecting the relay was straightforward; it uses a standard power plug for the inverter GFCI side and a hardwired connection for the AC input and output. Initially, I was a little apprehensive about the automatic switching, wondering if there would be a noticeable interruption or delay. However, the transition was surprisingly smooth, almost imperceptible when switching from shore power to the inverter, and similarly quick when returning to shore power. There were no unexpected glitches or power fluctuations that affected the sensitive equipment I was running.

Extended Use & Reliability

After about two months of consistent use, this transfer relay has proven its worth. It’s become an indispensable part of my mobile setup, silently managing the power source without any intervention from my end. I’ve subjected it to daily use, often switching sources multiple times when moving between charging stations or when grid power became unstable for brief periods. The unit shows no signs of wear; the casing is still solid, and all connections remain secure. Maintenance has been non-existent, as expected for a passive component like this; I simply ensure the connections are clean and dry, which they naturally have been. Compared to the manual switching I was doing previously, this component is a monumental upgrade in terms of both convenience and reliability, effectively eliminating a potential point of failure in my power system.

Breaking Down the Features of **Xantrex Inline Transfer Relay f/PROwatt SW**

Specifications

The Xantrex Inline Transfer Relay f/PROwatt SW boasts a 15A transfer relay size, which is ample for most typical inverter and shore power loads encountered in recreational vehicles, workshops, or mobile off-grid applications. Its black color is a standard aesthetic choice, blending into most electrical installations without drawing undue attention. The inclusion of a power plug for the inverter GFCI and a hardwire cord for the AC input simplifies connection; the plug offers a convenient, secure link to the inverter, while the hardwire option provides flexibility for direct integration into existing AC circuits. This relay is specifically designed as an accessory for the Prowatt SW product line, ensuring optimal compatibility and performance with those inverters. The manufacturer, Xantrex, is known for its power management solutions, lending a degree of confidence in the product’s design and build. These specifications mean the relay can handle a decent amount of current, providing a reliable automatic switch without requiring complex wiring or custom modifications for Prowatt SW users.

Performance & Functionality

In terms of its primary function, the Xantrex Inline Transfer Relay f/PROwatt SW performs exceptionally well. It reliably switches the AC source between shore power and the ProWatt SW inverter, and vice versa, with minimal interruption. The automatic nature of the transfer is its strongest asset, removing the need for manual intervention and thus preventing accidental power interruptions or incorrect source selection. I’ve observed that when shore power is present, the relay smoothly prioritizes it, and when shore power is lost, it seamlessly transitions to the inverter’s output. This consistent and predictable behavior is exactly what is needed in critical power applications. Its functionality is straightforward: it does one job, and it does it very well.

Design & Ergonomics

The design of this transfer relay is purely functional. Its black, plastic casing is robust and seems built to withstand the vibrations and conditions typical in mobile power environments. While not aesthetically remarkable, its easy to mount design means it can be secured quickly in place without fuss. The connection points, a power plug on one end and hardwire terminals on the other, are clearly designated and provide a solid connection. There’s no learning curve associated with this unit; its operation is entirely automatic once installed. The simplicity of its design is a significant ergonomic advantage, reducing installation complexity and potential user error.

Durability & Maintenance

Given its static nature once installed, the durability of the Xantrex Inline Transfer Relay f/PROwatt SW is primarily tied to the quality of its internal components and the robustness of its casing. Based on my extended use, it feels solid and reliable. There’s no indication of premature wear or degradation, even with regular power cycling. Maintenance is practically non-existent, which is a huge plus for any gear specialist. The only real maintenance would be occasional checks of the wire connections to ensure they remain tight and free from corrosion, especially in environments where dust or moisture might be a concern. However, the unit itself requires no active cleaning or lubrication.

Accessories and Customization Options

The primary “accessories” included with the Xantrex Inline Transfer Relay f/PROwatt SW are the pre-attached cables: a power plug for the inverter GFCI and a hardwire cord for the AC input. These are not so much accessories as integrated components essential for its function. There are no other customization options for this specific relay model itself, as it’s a fixed-function device. Its purpose is to integrate directly into a power system, and its design reflects that singular focus rather than offering modularity. It is designed to work with the Xantrex ProWatt SW inverter line, so compatibility with other brands or inverter models is not an advertised feature.

Pros and Cons of **Xantrex Inline Transfer Relay f/PROwatt SW**

Who Should Buy **Xantrex Inline Transfer Relay f/PROwatt SW**?

This transfer relay is ideally suited for individuals and professionals who utilize Xantrex ProWatt SW inverters in mobile applications such as RVs, boats, food trucks, or remote workshops where automatic switching between grid power and inverter power is desired. It is an excellent choice for anyone looking to simplify their power management system and eliminate the hassle and potential errors of manual source switching. Those who prioritize convenience and reliability in their power setup will find significant value in this unit.

You should probably skip this product if you require a higher amperage rating than 15A, need a transfer switch with a manual override feature, or are using an inverter from a different manufacturer. Users looking for a universal solution might need to explore other options. For those who do fit the intended profile, pairing this relay with a Xantrex ProWatt SW inverter and ensuring your shore power input and inverter output cables are appropriately sized for the 15A capacity will make the system perform optimally.

Conclusion on **Xantrex Inline Transfer Relay f/PROwatt SW**

The Xantrex Inline Transfer Relay f/PROwatt SW is a well-executed component that effectively solves a common problem in mobile power systems. Its ability to automatically and reliably switch between shore power and inverter power streamlines operation and enhances overall system stability. The $144.89 price point feels justified given the convenience and peace of mind it provides, especially when compared to the cost and complexity of implementing a manual switching solution. I would absolutely recommend this unit to anyone already invested in the Xantrex ProWatt SW inverter ecosystem who needs a straightforward, automatic power source transfer. It’s a practical upgrade that delivers on its promise of simplified, dependable power management.