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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.

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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.

Single Phase UPS Systems

Here at Critical Power Supplies, we have an exceptional range of single phase UPS systems available to purchase online. The technology used to generate and distribute electricity in many countries around the world produces either a three-phase or single-phase supply.

As it moves closer to the point of use, local substations reduce the electricity voltage and add a neutral and earth reference. The substation supplies a single-phase, 230V supply (made up of a single-phase and neutral) to energy consumers (businesses or consumer customers) in its vicinity, or a three-phase supply to larger energy consumers.

The supply coming into an industrial estate, factory, office block or other large building will be a three-phase, 400V 50Hz supply. It is then converted to a single-phase supply by the distribution network within the building so that wall sockets will have a voltage of 230V at 50Hz. This provides a maximum current typically: 10, 13, 16, or 20 Amps.

UPS are designed to work on either a single or three-phase supply, but not both. The difference between them is really to do with how they handle the electricity supply, their switching mechanisms and size of output they are designed to enable.

At Critical Power Projects, we supply a number of desktops, floor standing, or rack-mounted, single phase UPS and single-phase UPS systems up to 3kVA from leading manufacturers across the globe. We employ a team of qualified and experienced UPS experts, fully conversant with the full gamut of requirements of power protection by all sectors of business and industry. We also understand which single-phase UPS will be best for your requirements, and as we are manufacturer-independent, we are free to supply a solution that best meets your needs. If it’s just the product you want, we can ship it to you quickly (from stock or on special order). For additional power security, some single-phase UPS (and those rated above 3kVA) can be hard-wired, in which case we can provide expert installation and project management.

We also provide battery extension packs to increase battery run time, plus bypasses, remote monitoring, power management and power monitoring solutions.

For advice on 1 phase UPS, or if you would like to know more about single phase UPS systems and the range of power protection products and services we supply, or if you would like us to arrange a site survey or quotation, please call: 0808 503 8777, fill in our contacts form or send us an email with your details and we’ll call you.

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Critical Power Supplies - Product box 1722766 1608110642
APC Back-UPS 850VA, 230V, USB Type-C and A charging ports (UPS)
£96.24 £96.24
in stock
details >
Critical Power Supplies - Product box 1724256 1608110746
APC smt1500rmi2uc uninterruptible power supply (ups) 1500 va 6 ac outlet(s) line-interactive
£699.50 £699.50
in stock
details >
Critical Power Supplies - Product box 35280 1500036357
APC Back-UPS 500VA Line Interactive 230V (UPS)
£54.84 £54.84
in stock
details >
Critical Power Supplies - Product box 1804531 1613560375
APC Smart-UPS 1.5kVA Line Interactive 230V with SmartConnect (UPS)
£542.77 £542.77
in stock
details >
Critical Power Supplies - Product box 1725341 1608110823
APC Smart-UPS 3kVA Line Interactive 230V with SmartConnect (UPS) (2U)
£1,509.75 £1,509.75
in stock
details >
Critical Power Supplies - Product box 1804521 1613560369
APC Smart-UPS 1.5kVA Line Interactive 230V with SmartConnect (UPS)
£460.96 £460.96
in stock
details >
Critical Power Supplies - Product box 1724311 1608110748
APC Smart-UPS 1kVA Line Interactive 230V with SmartConnect (UPS)
£402.80 £402.80
in stock
details >
Critical Power Supplies - Product box 1804526 1613560370
APC Smart-UPS C 1kVA Line Interactive 230V with SmartConnect (UPS)
£347.60 £347.60
in stock
details >
Critical Power Supplies - Product box 1727496 1608110998
APC Back-UPS 700VA Line Interactive 230V (UPS)
£68.64 £68.64
in stock
details >
Critical Power Supplies - Product box 1727511 1608110999
APC Back-UPS 950VA Line Interactive 230V (UPS)
£87.57 £87.57
in stock
details >
Critical Power Supplies - Product box 32837 1500036357
APC Smart-UPS X 750VA Line Interactive 230V (UPS)
£449.12 £449.12
in stock
details >
Critical Power Supplies - Product box 1725611 1608110855
APC Smart-UPS SRT 3kVA Online 230V (UPS) (2U)
£2,125.82 £2,125.82
in stock
details >
Critical Power Supplies - Product box 1783256 1611649585
APC Smart-UPS 2.2kVA Line Interactive 230V with Smart Connect (UPS) (2U)
£1,184.47 £1,184.47
in stock
details >
Critical Power Supplies - Product box 1724236 1608110746
APC Smart-UPS 1kVA Line Interactive 230V with SmartConnect (UPS)
£558.54 £558.54
in stock
details >
Critical Power Supplies - Product box 35256 1500036357
APC Back-UPS 325VA Offline 230V (UPS) (UK)
£79.44 £79.44
in stock
details >
Best Seller
Critical Power Supplies - Product box 1725006 1608110800
APC Smart-UPS 750VA Line Interactive 230V with SmartConnect (UPS)
£282.54 £282.54
in stock
details >
Critical Power Supplies - Product box 31821 1500036357
APC Smart-UPS X 3kVA Line Interactive 230V (UPS)
£1,480.18 £1,480.18
in stock
details >
Critical Power Supplies - Product box 32644 1500036357
APC Smart-UPS 620VA Line Interactive 230V (UPS)
£225.37 £225.37
in stock
details >