10 Best Sine Wave Ups 2026 in the United States

The APC Smart-UPS 3000VA Lithium Ion is a strong choice if you need reliable backup power for rack-mounted systems. It offers a solid power capacity of 3000VA (2700W), suitable for protecting important servers or network gear from outages. The pure sine wave output is a big plus, ensuring clean, stable power that’s safe for sensitive electronics. The unit’s transfer time is fast, helping prevent disruptions when switching to battery. It includes ten outlets—eight standard 5-15R and two 5-20—giving flexibility for connecting multiple devices.

The built-in network management card and SmartConnect feature allow easy remote monitoring and alerts, which is great if you want to track UPS status without being on-site. The lithium-ion battery helps keep the UPS lighter and may last longer compared to traditional batteries. Its slim 2U rackmount design fits well in most server racks, though at nearly 78 pounds it’s on the heavier side. The detailed battery runtime depends on the load you put on it, so connecting many devices will shorten backup time. Also, the SmartConnect service is free only for six months after purchase, so ongoing use will require a subscription.

This UPS suits small to medium IT setups that need dependable power protection with convenient management. However, if you require very long battery backup or a more lightweight option, considering other models might be beneficial.

The APC Smart-UPS SMT-SmartConnect SMT2200IC offers a solid combination of features tailored for small to medium-sized businesses that need reliable backup power for servers and network equipment. Its power capacity of 2200VA/1980 Watts ensures it can handle substantial loads, making it suitable for a variety of critical devices. The pure sine wave output is ideal for sensitive electronics, providing clean and stable power which is crucial for maintaining equipment performance and longevity. With a total of 8 IEC-C13 outlets, it offers ample connectivity options for multiple devices.

The tower form factor is designed to fit neatly in server rooms or office environments without taking up excessive space. The transfer time is minimal, ensuring seamless switch-over during power interruptions. Additionally, the SmartConnect feature allows for cloud-based proactive monitoring, making it convenient to manage and monitor the UPS from anywhere with an internet connection. This can be particularly useful for IT administrators who need to oversee multiple systems remotely. The LCD interface is user-friendly and provides clear, multilingual information, which simplifies setup and monitoring.

On the downside, the unit is relatively heavy at 110.4 pounds, which might make installation and relocation cumbersome without proper handling equipment. Moreover, while the inclusion of a SmartSlot for an optional network management card is beneficial, it does require an additional purchase. In summary, the APC Smart-UPS SMT2200IC is well-suited for businesses needing reliable backup power with advanced monitoring capabilities, although its weight and potential need for additional accessories are considerations to keep in mind.

The Eaton 9SX 2000VA 1800W 120V Online Double-Conversion UPS is designed to provide reliable power protection for your critical equipment. With a power capacity of 2000VA and 1800W, it offers robust support for a variety of devices. One of its key strengths is the zero transfer time between on-line and battery modes, which ensures uninterrupted operation, making it ideal for environments where power consistency is crucial.

The UPS features six NEMA 5-20R outlets and one L5-20R outlet, providing ample connectivity options for your equipment. An optional NETWORK-M2 network card allows for full remote access and control, adding a layer of cybersecurity management. The front-panel LCD is a handy feature that keeps you updated with status information and vital analytics, helping you manage the UPS effectively. Another benefit is the option to add external battery modules, which can extend the runtime significantly, ensuring longer protection during outages.

However, there are some drawbacks. The unit is quite heavy at 82 pounds, which may make it difficult to move or install. Despite these minor issues, the Eaton 9SX is a solid choice for those who need a reliable and versatile UPS with advanced features and extended runtime capabilities.