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Automatic Transfer Switches

Automatic transfer switches (ATS) increase the resilience of your electrical power installation. An ATS has dual power inputs (one primary and one secondary) from which it supplies power to the connected loads. If the primary ‘A’ supply fails, the secondary ‘B’ automatically takes over without interruption to the load. ATS use fast acting (within milliseconds) relays to transfer power between the ‘A’ and ‘B’ supplies. The two power supplies can be two separately derived mains power sources or two UPS system outputs or a combination of the two. The ATS have built-in network connectivity for remote management via Web, SNMP, or Telnet interfaces. ATS are typically rack mounted in a server cabinet. Static Transfer Switches (STS) are floor standing designed for larger loads and incorporate a solid state static switch with a zero transfer time.

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CertaUPS ATS 230V 16A Singe Phase 8 C13 1 C19 Outlets from £312.50
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APC Rack ATS 230V 10A Singe Phase C14 Input 12 C13 Outlets from £613.18
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APC Rack ATS 230V 16A Singe Phase C20 Input 8 C13 1 C19 Outlets from £660.67
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APC Rack ATS 230V 32A Singe Phase IEC 309 Input 16 C13 2 C19 Outlets from £859.08
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APC Rack ATS 230V 16A Singe Phase 2 IEC 309 Inputs 1 IEC 309 Outlets from £862.26
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Borri STS300 400V 100A Three Phase Static Transfer Switches POA
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Borri STS300 400V 250A Three Phase Static Transfer Switches POA
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Borri STS300 400A 400V Three Phase Static Transfer Switches POA
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Borri STS300 400V 630A Three Phase Static Transfer Switches POA
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Borri STS300 400V 800A Three Phase Static Transfer Switches POA
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Borri STS300 400V 1250A Three Phase Static Transfer Switches POA
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Borri STS300 400V 1000A Three Phase Static Transfer Switches POA

Static Transfer Switches

There are two types of switch. Automatic Transfer Switches (ATS) are generally relay-based whilst Static Transfer Switches (STS) make use of static electronics to provide a break-free transfer. In terms of form factor, ATS devices are designed for server racks and will be rack mounted or wall mounted. STS products are designed for larger room-sized loads including three-phase applications and can be sized up to several hundred Amps in power rating.

For more information on our automatic transfer switches or static transfer switches please contact our projects team.

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Related FAQs

  • Can you use a PDU for environment monitoring?

    Some of the metered PDUs, smart and intelligent PDUs we supply can be installed with additional plug-in sensors for temperature and humidity. The PDUs are connected to the local IP network and can report monitoring readings taken by the sensors.

  • Can an intelligent PDU provide smart socket metering and control?

    With intelligent PDUs each individual socket is remotely monitored for power and energy usage and can be remotely controlled i.e. powered down or rebooted to provide total control of the connected load(s).

  • Do you supply in-line energy meters?

    As well as power distribution units we have specific in-line energy meters that can be installed between power sources and their connected loads. The in-line meters come with flying leads, plugs and sockets and provide a range of power related information including kVA, kW, power factor, voltage, frequency and kWh of energy usage.