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Critical Power Supplies - Maintaining a rack

Do you need help installing?
We can help you.

We provide a range of on-site services whether your project is for a single UPS and Generator or remote monitoring across multiple sites.

Critical Power Supplies - Project Planning

Get a head start with our FREE
Project Management Consultation.

Why not use our project management services to help you have a smooth and pain free project.

Critical Power Supplies - Datacentre Banner

Trade-In your UPS with us

Trade-in your old UPS for a same or higher spec model*

Critical Power Supplies - Maintaining a rack

Do you need help installing?
We can help you.

We provide a range of on-site services whether your project is for a single UPS and Generator or remote monitoring across multiple sites.

Critical Power Supplies - Project Management and Planning

Get a head start with our FREE
Project Management Consultation.

Why not use our project management services to help you have a smooth and pain free project.

Critical Power Supplies - Datacentre Banner

Trade-In your UPS with us

Trade-in your old UPS for a same or higher spec model*

*Terms and conditions apply.

Uninterruptible Power Supplies

Uninterruptible Power Supplies or UPS is our speciality here at Critical Power Supplies. With a wide range of UPS systems for all types of applications from home and domestic use up to heavy industry and medical uses, you are sure to find the UPS power supply that you require. Do you need a rack mount solution for your servers or UPS battery backup? For whatever your needs are we can provide you with an uninterruptible power supply.

In our collection you will find all of the uninterruptible power supplies that you require from line interactive UPS to online UPS systems. We also stock an extensive selection of UPS battery replacements and 3 phase UPS systems.

You will find leading manufacturers in our collection including APC, Eaton and Riello, so you can expect nothing less than outstanding performance with our products. We only have suppliers who meet our supply chain standards for quality (ISO 9001), health and safety (ISO 18001), and environmental management (ISO 14001). Browse our uninterruptible power supplies in full below or contact us today if you have any questions regarding our range.

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Critical Power Supplies - Product box 1805796 1613561815
APC suppressor pnetr6 surge protector 2 ac outlet(s) black
£33.55 £33.55
in stock
details >
Critical Power Supplies - Product box 1025031 1562165755
Riello iDialog 600VA Offline 230V (UPS)
£61.61 £61.61
in stock
details >
Critical Power Supplies - Product box 1024641 1562162891
Riello iDialog 800VA Offline 230V (UPS)
£69.20 £69.20
in stock
details >
Best Seller
Critical Power Supplies - Product box 681361 1548067446
Riello iPlug 600VA Offline 230V (UPS)
£66.68 £66.68
in stock
details >
Critical Power Supplies - Product box 34901 1500036357
CSB RBC48 Replacement Battery
£58.20 £58.20
in stock
details >
Critical Power Supplies - Product box 1783326 1611651433
APC UPS network management card
£241.60 £241.60
in stock
details >
Critical Power Supplies - Product box 31828 1500036357
Riello Netman 204 4GB Connectivity Card
£158.30 £158.30
in stock
details >
Critical Power Supplies - Product box 1724256 1608110746
APC smt1500rmi2uc uninterruptible power supply (ups) 1500 va 6 ac outlet(s) line-interactive
£723.44 £723.44
in stock
details >
Best Performance
Critical Power Supplies - Product box 1856036 1616145433
APC Back-UPS 1.4kVA Line Interactive 230V (UPS)
£120.56 £120.56
in stock
details >
Critical Power Supplies - Product box 1025001 1562165353
Riello iDialog 400VA Offline 230V (UPS)
£60.60 £60.60
in stock
details >
Critical Power Supplies - Product box 1727496 1608110998
APC Back-UPS 700VA Line Interactive 230V (UPS)
£69.99 £69.99
in stock
details >
Critical Power Supplies - Product box 35213 1500036357
Riello Vision Dual 3kVA Line Interactive 230V (UPS)
£472.09 £472.09
in stock
details >
Great Value
Critical Power Supplies - Product box 34827 1500036357
APC Back-UPS 400VA Offline 230V (UPS)
£79.40 £79.40
in stock
details >
Critical Power Supplies - Product box 895896 1559640972
Riello MultiCOM 384 Monitoring Card
£118.81 £118.81
in stock
details >
Critical Power Supplies - Product box 1742076 1608112732
APC apcrbc140 sealed lead acid (vrla)
£460.98 £460.98
in stock
details >
Critical Power Supplies - Product box 885331 1559044796
Riello Rack Mounting Kit (600 - 800mm Depth) (for SDH/VSD Range)
£35.29 £35.29
in stock
details >
Critical Power Supplies - Product box 35280 1500036357
APC Back-UPS 500VA Line Interactive 230V (UPS)
£55.51 £55.51
in stock
details >
Critical Power Supplies - Product box 32661 1500036357
APC rbc48 replacement battery
£104.49 £104.49
in stock
details >