Choosing between two used MGE critical power monitoring systems comes down to how much you want to spend and whether having a display on the unit matters. Both are designed to keep watch over UPS systems and critical power equipment, but they are sold at very different price points.
Quick verdict
If you want the lower-cost path into MGE critical power monitoring and appreciate having a Square D display attached to the unit, the MGE 102198-0F at USD 79.99 is the more practical pick. If the specific 505730-00 A00 model designation is what you are looking for, and you are comfortable paying USD 275.00, the MGE 505730-00 A00 is the alternative. For most buyers, especially anyone watching how much they spend, the 102198-0F is the easier recommendation.
Comparison snapshot
| Feature | MGE 102198-0F w/ Square D Display | MGE 505730-00 A00 |
|---|---|---|
| Listed price | USD 79.99 | USD 275.00 |
| Price indicator | ||
| Condition | Used | Used |
| Model | 102198-0F | 505730-00 A00 |
Where each wins
MGE 102198-0F with Square D Display is the lower-cost pick. The listed price is USD 79.99, which is the lower of the two, and it includes the Square D display, making on-site status checks easier. This unit is oriented toward data centers and UPS monitoring.
MGE 505730-00 A00 is the higher-priced unit at USD 275.00, but it carries the model designation 505730-00 A00 and SKU 4119AA. It centers on real-time alerts and easy integration with existing electrical setups, which could matter for facilities that need quick notification of power anomalies.
Product notes
MGE 102198-0F with Square D Display
The practical reason to choose this unit is the price: USD 79.99 is the lower listed price in this comparison, and you get a Square D display in the package. It is intended for monitoring UPS and other critical power equipment, with an application focus on data centers. Because it is a used unit, you may see minor scratches or signs of handling. That is the trade-off for paying less and having a display included. If your environment has racks of critical power gear and you want a simple, display-equipped monitoring device without spending a lot, this is the version to start with. It does not carry the 505730-00 A00 model label, so if that specific designation is important to you, this unit will not match it.
MGE 505730-00 A00 (4119AA)
The case for this unit is the specific model identity: 505730-00 A00 with SKU 4119AA. It emphasizes real-time alerts and easy integration with existing electrical setups, which is useful if you want to catch power problems before they become outages. At USD 275.00, it is priced well above the 102198-0F, so the cost difference is substantial. It is also a used item, so cosmetic wear is possible. This is the option for someone who specifically needs the 505730-00 A00 model and is willing to pay a higher price for that exact unit, rather than settling for the less expensive display-equipped version. If your primary goal is just monitoring with a display and minimal spend, the higher cost is harder to justify.
Final choice by use case
Choose the MGE 102198-0F with Square D Display when you want to spend less and prefer having a display on the unit. It is the lower-priced way into critical power monitoring. Choose the MGE 505730-00 A00 when the exact model number is important or you prioritize the real-time alert emphasis of that model, and you are prepared to pay USD 275.00 for it. Both are used MGE critical power monitoring systems, so your decision is really about price and model preference.
