About us

Constant Power Services

Constant Power Services currently occupy a 19,000 sq/ft premises in Hitchin, Hertfordshire which accommodates both sales and service activities as well as a large warehouse facility. Stock UPS units are typically available up to 400kVA as well as a comprehensive spares holding to fulfill our service customer base.

Directly employed Sales and Service engineers are situated in our Letchworth head office and remotely throughout the United Kingdom. Combined with representation in Ireland this allows a quick and efficient response to both sales enquires and service related callouts.


Products

Central Supply Systems

Central Supply Systems

The CSS (Central Supply System) range by Riello UPS is designed in compliance with standard EN 50171 and is therefore the ideal solution for installat...

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Communication card adapter

Communication card adapter

This adapter allows you to use the Riello UPS communication cards via an RS232 port. Is the optimal solution for use with legacy UPS without a slot or...

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Environmental sensors

Environmental sensors

The Netman environmental sensors monitor and record environmental conditions as well as activities in protected areas and at the premises where the UP...

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Essential Service Package

Essential Service Package

Essential Service PackageThis package is essential to those who have a UPS less than 12 months old and within the warranty period. Offering 1 service ...

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Generator supply and maintenance

Generator supply and maintenance

From telecommunications, to transportation and medical applications, UPS battery power can keep your business operating during short-term power outage...

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iDialog Rack Range

iDialog Rack Range

iDialog Rack RangeThe iDialog Rack range is the ideal solution for the protection of peripherals in the home and in office environments. iDialog is an...

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iDialog Rack UPS

iDialog Rack UPS

The iDialog Rack range is the ideal solution for the protection of peripherals in the home and in office environments.

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Kit for AS400 and iSeries™

Kit for AS400 and iSeries™

Due to its single-level memory management feature, it is compulsory for any IBM AS/400 system to be UPS protected so that an orderly and controlled sh...

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Load Bank Testing

Load Bank Testing

Load Bank TestingYour business may require a complete system inspection, in which case Constant Power Services can offer site load testing to help ide...

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Master MPS Range

Master MPS Range

Master MPS RangeThe Master MPS Range has been enhanced with the HP series available from 100 to 600kVAMaster MPS Range provides maximum protection and...

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Master Static Bypass

Master Static Bypass

Master Static BypassThe centralised by-pass is an alternative to the distributed by-pass. Technically the two solutions fulfil the same purpose, i.e. ...

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Master Switch Single Phase

Master Switch Single Phase

Master Switch Single-phase (MMS ) is part of the Master Switch range and offers solutions suitable for protecting single-phase loads with different po...

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Multi Guard Industrial Range

Multi Guard Industrial Range

Multi Guard Industrial RangeThe Multi Guard Industrial range was specially developed to ensure power continuity in all sectors deemed critical due to ...

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Multi Guard Industrial UPS

Multi Guard Industrial UPS

The Multi Guard Industrial range was specially developed to ensure power continuity in all sectors deemed critical due to the specific environmental c...

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Multi Sentry uninterruptible power supply

Multi Sentry uninterruptible power supply

MULTI SENTRY is a state-of-the-art uninterruptible power supply, achieving the highest possible level of on-line double-conversion performance (VFI-SS...

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Multi Switch Transfer Systems

Multi Switch Transfer Systems

Multi-Switch improves electrical supply continuity. The principle of operation guarantees a higher reliability level than that achieved using a single...

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Premium Service Package

Premium Service Package

Premium Service PackageThe Premium Package is well suited to cover the requirement for a service agreement to be in place when a contract or project i...

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Professional Service Package

Professional Service Package

Professional Service PackageThe Professional Service Package would be ideally suited, but not exclusive, to a facilities management company or custome...

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Project Mangement For UPS Projects

Project Mangement For UPS Projects

Project Mangement For UPS ProjectsOur dedicated projects team look after the transition period from point of order to site handover. From equipment lo...

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Riello Multi Power

Riello Multi Power

Riello Multi PowerThe MULTI POWER is designed to protect any critical high-density computer and IT environment, whilst achieving maximum availability....

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Sentinel Dual 1000 - 3000 VA

Sentinel Dual 1000 - 3000 VA

Sentinel Dual 1000 - 3000 VASentinel Dual 1000 - 3000 VA is the high density version of the Premium Pro range of double-conversion on-line UPS.Sentine...

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Sentinel Dual 3.3 - 10 kVA

Sentinel Dual 3.3 - 10 kVA

Sentinel Dual 3.3 - 10 kVAThe Sentinel Dual 3.3 - 10 kVA range is available in 3.3-4 kVA single-phase models and 6.5-8-10 kVA three-phase/single-phase...

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Sentinel Dual High Power UPS

Sentinel Dual High Power UPS

The SENTINEL DUAL (High Power) series is available in 3.3-4-5-6-8-10kVA single-phase models and 6.5-8-10kVA three-phase/single-phase models, with on-l...

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Sentinel Pro 700 - 3000 VA

Sentinel Pro 700 - 3000 VA

Sentinel Pro 700 - 3000 VA is the latest evolution of the successful Riello Dialog Plus online UPS. This latest development has been designed with the...

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Sentinel Pro UPS Units

Sentinel Pro UPS Units

SENTINEL PRO is the latest evolution of the successful Riello Dialog Plus online UPS. This latest development has been designed with the environment i...

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SuperCaps UPS Solutions

SuperCaps UPS Solutions

Riello SuperCaps UPS are designed to provide complete power supply protection for sensitive and mission-critical loads, protecting them from mains dis...

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Thermal Imaging For UPS Projects

Thermal Imaging For UPS Projects

Thermal Imaging For UPS ProjectsThermal imaging highlights any anomalies, for example, if one battery is hotter or colder than the others it shows the...

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Ultimate Professional Service Package

Ultimate Professional Service Package

Ultimate Professional Service PackageFor complete peace of mind where you simply can not afford any downtime or disruption to your data centre or serv...

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Uninterruptible Power Supply Repairs

Uninterruptible Power Supply Repairs

Uninterruptible Power Supply RepairsHaving a service agreement means that any remedial works which may be required are picked up early, allowing you t...

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UPS Generators

UPS Generators

From telecommunications, to transportation and medical applications, UPS battery power can keep your business operating during short-term power outage...

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Jobs

UPS Service Engineer

UPS Service Engineer

Experience within the UPS industry required for this position. Field Service experience within an Electrical and/or Electronic discipline is preferable.

All applicants must be within easy reach of our Letchworth based office.

Documents

General Catalogue

General Catalogue

Catalogue

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Software and Accessories

Software and Accessories

Catalogue

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Contact Us

Constant Power Services

  • Riello House
  • Works Road
  • Letchworth, Stevenage
  • Hertfordshire
  • SG6 1AZ

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