The Advantages of a Transfer Switch – Don’t Let Power Problems Ruin Your Day

In critical network applications, older single power inlet devices are basically a disaster waiting to happen. All it takes is a power outage to take down single-inlet routers, servers and firewalls and cause widespread interruptions of network service and loss of access to critical devices and functions when they’re needed the most. In an ideal world, the obvious solution would be to replace those existing single power inlet devices with brand new dual-inlet network elements, but in the real world, sometimes we just don’t have the budget to drop tens of thousands of dollars on new equipment when those older single inlet devices are working fine (for the most part.) In cases like this, a simple transfer switch can provide an economical means to add power redundancy and power fallback capabilities, without the need to replace existing single inlet devices.

A transfer switch allows single inlet devices to be connected to two power supplies, effectively providing power redundancy and fallback without the need to purchase expensive new dual-inlet devices. Installation and operation of a transfer switch are incredibly simple. First, the transfer switch is connected to a primary power source (such as a wall outlet) and a secondary power source such as a PSU. Next, several single inlet devices are connected to the transfer switch. After installation, the transfer switch constantly monitors the primary power source and automatically switches over to the secondary power source in the event that the primary power source fails or becomes unstable.

When the transfer switch detects that the primary power supply is compromised, the process of switching to the secondary power supply is almost instantaneous. Some of the more advanced transfer switch products offer switching times as short as 8 microseconds; quick enough that the switchover is transparent to devices and unnoticeable by users. In addition, some transfer switch products also offer the ability to switch back to the primary power source if the switch determines that the primary source is dependable again.

A transfer switch can provide incredible savings for budget-conscious network managers who need power fallback and redundancy capabilities for mission critical applications, but can’t afford the expense or inconvenience of replacing existing single inlet equipment with brand new dual inlet devices. In addition to saving money, a transfer switch can also save time and trouble by avoiding the need to reconfigure existing devices or rewrite scripts in order to provide compatibility with newer dual-inlet devices.

All it takes is a power outage to a router at a remote network equipment rack, and your entire network could be down for days while you wait for technicians to travel to the remote site and fix the problem. A transfer switch helps network administrators to avoid the expense and hassles associated with replacing single inlet devices, and provides a simple, cost-effective means to add power fallback and redundancy capabilities without replacing your existing single inlet devices and reconfiguring existing applications to work with new dual-inlet devices.

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