The majority of data center

transfer switches on the market

fall short of expectation.

Electromechanical Relay Switches (ATS):

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Vendors’ transfer times vary from 8 to 16ms.

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The contacts often weld together due to electrical arcing;

one of the leading causes of electromechanical relay

transfer switch failure.

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Relay only solutions do not indicate when the relay has

welded and is therefore no longer able to switch power feeds.

Thus data center operators only know their transfer switch has

failed when it’s too late, i.e. there is a power failure and no

switchover occurs.

Silicon-Controlled Rectifier Switches (STS):

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Offer very fast transfer times (normally 4 to 6ms), but

are over five and a half times more expensive than

electromechanical switches.

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Draw significantly more energy than electromechanical relays

and produce more heat thereby consuming cooling resources.

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Are less energy efficient requiring forced cooling and lower

maximum operating temperatures.

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Reduce the energy efficiency of the rack.

Smart Controller Enables Remote Monitoring and

Management:

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Intuitive GUI, SNMP, Modbus, TCP/IP, JSON-RPC for scripting,

IPv4 / IPv6.

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Full depth chassis.

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Front and rear tablet access and control via USB ports.

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Threshold alerting and status updates via GSM text, email

and syslog.

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Logs transfer times for reporting.

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Support for plug-and play sensors.

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USB ports support Wi-Fi, camera, tablet, and cascading.

Raritan’s innovative hybrid design

is fast and reliable.

8–16ms

ATS (relay-based) Transfer Time

4ms

STS (SCR-based) Transfer Time

Raritan Hybrid (relay+SCR-based) Transfer Time

Multifunction Display

Transfer Switch Indicator Lamps

Transfer Switch

Indicators and Controls

Raritan’s Patent-Pending Hybrid Design:

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Solid state components provide speedy transfer.

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Patent-pending circuitry reduces wear on electro-mechanical

components.

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Eliminates electrical arcing that leads to transfer relay failure.

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Identifies output short circuits and sends an alarm so the

short circuit may be corrected before the power transfer

is made manually.

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Speed of an STS at a lower cost.

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Fan-free design for increased reliability.

Field Replaceable Short Circuit Protection

Integrated iPadTM display via USB port

A Transfer Switch That Is More Intelligent, More Reliable, Easier to Use

Inlet 2

Inlet 1 On

Output

Power

Fail

Inlet 2 On

Inlet 2

SCR

Inlet 2

Relay

Off

Output

Fail

Inlet 1

Relay

Relay

Off

Output

Fail

Inlet 1

SCR

Inlet 2

SCR

4-8ms