Uninterruptible Power Supply Systems
UPS systems from 500VA to 6.4mVA - solutions for all applications.
A UPS (Uninterruptible Power Supply) serves as a critical emergency backup for connected equipment during mains power failures, ensuring a seamless transition to battery power to maintain operations. It protects against power surges and voltage spikes, safeguarding sensitive devices while simultaneously recharging its batteries once mains power is restored, ensuring readiness for future outages.
We provide a range of rack-mounted and floor-standing UPS solutions from 500VA to 6.4mVA, suitable for all applications, from home office to large data centres. Our systems can offer runtimes from 5 minutes to several hours. If you need help selecting the right UPS for your needs, feel free to contact our friendly sales team on 0333 222 4000 for assistance.
With 32 years of experience, our knowledgeable sales team is here to provide expert advice on UPS systems tailored to your needs. We specialise in professional installation and comprehensive maintenance services for systems 5kVA and above.
Riello Sentinel Dual UPS (1kVA - 3kVA)
6 options, 1kVA - 3kVA
Riello Sentinel Dual UPS (1kVA - 3kVA)
APC Smart-UPS Line Interactive (Tower) SMT Series
5 Options, 750VA - 3kVA
APC Smart-UPS Line Interactive (Tower) SMT Series
APC Smart-UPS Line Interactive (Rack) SMT Series
10 options, 750VA - 3kVA
APC Smart-UPS Line Interactive (Rack) SMT Series
APC Smart-UPS Line Interactive (Rack/Tower) SMX Series
9 options, 750VA - 3kVA
APC Smart-UPS Line Interactive (Rack/Tower) SMX Series
APC Smart-UPS Online SRT series with extended runtime
5 options, 1.5kVA - 6kVA
APC Smart-UPS Online SRT series with extended runtime
APC Smart-UPS Line Interactive Lithium-ion UPS
5 options, 750VA - 3kVA
APC Smart-UPS Line Interactive Lithium-ion UPS
Eaton Tripp Lite Series SmartPro Medical-Grade UPS
2 options, 700VA - 1kVA
Eaton Tripp Lite Series SmartPro Medical-Grade UPS
Riello Sentinel Dual UPS (5kVA - 6kVA)
2 options, 5kVA - 6kVA
Riello Sentinel Dual UPS (5kVA - 6kVA)
APC Symmetra PX UPS, 16-48kW (scalable)
3 options, 16kW - 48kW
APC Symmetra PX UPS, 16-48kW (scalable)
APC Symmetra PX UPS, 16-48kW (scalable, without batteries)
3 options, 16kW - 48kW
APC Symmetra PX UPS, 16-48kW (scalable, without batteries)
APC Symmetra PX UPS, 32-96kW (scalable) with Modular Power Distribution
3 options, 32kW - 96kW
APC Symmetra PX UPS, 32-96kW (scalable) with Modular Power Distribution
APC Easy UPS 3S 3:1 (for external batteries)
4 options, 10 kVA - 30kVA
APC Easy UPS 3S 3:1 (for external batteries)
APC Easy UPS 3S 3:3 (for external batteries)
5 options, 10kVA - 40kVA
APC Easy UPS 3S 3:3 (for external batteries)
APC Easy UPS 3S 3:1 (for internal batteries)
4 options, 10 - 30kVA
APC Easy UPS 3S 3:1 (for internal batteries)
APC Easy UPS 3S 3:3 (for internal batteries)
5 options, 10 - 40kVA
APC Easy UPS 3S 3:3 (for internal batteries)
FAQs
A UPS, or uninterruptible power supply, is a device that provides emergency backup power when your main electricity supply fails. It keeps connected equipment running, allowing your operations to continue seamlessly (or to safely and cleanly shut down computers, servers, or other critical systems where only a short runtime is required). A UPS also helps protect against power surges, voltage drops, and electrical noise, ensuring your equipment remains stable and secure through a clean, regulated power supply.
Yes, UPS systems are worth the investment, especially for businesses and organisations that rely on continuous power. A UPS protects valuable data, prevents hardware damage, and reduces costly downtime during power cuts. Even for home use, a UPS can safeguard computers, networking equipment, and entertainment systems from sudden power loss or spikes.
When used correctly, UPS systems are safe. They are designed with built-in protection to prevent overheating, short circuiting, and electrical faults. The main risk comes from improper installation or failure to follow safety guidelines, including handling batteries during a replacement activity. Choosing a professional supplier and following the manufacturer’s instructions will ensure your UPS operates safely and reliably.
A UPS works by storing electrical energy in internal batteries or capacitors. When the main power fails or drops below a safe level, the UPS automatically switches to its stored power, providing an uninterrupted flow of electricity to connected devices. Once the main power returns, the UPS recharges itself, ready for the next power interruption. Some models also regulate voltage to protect against power fluctuations.
The size of UPS you need depends on the total power consumption of the equipment you want to protect and how long you need it to run during an outage. To calculate this, add up the maximum wattage of all connected devices and choose a UPS with at least 20% more capacity than that total. For business or server applications, it is best to speak with a specialist to ensure the UPS is correctly sized for your power and runtime requirements. NSSE are well used to calculating these requirements and offering solutions best suited for our customers needs and budget.