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Electrician's Wiki - Liebert AC4 Controller
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Liebert AC4 Controller
Auto-Changeover Controllers
Professional rating

Autochangeover controllers are ideal for coordinated control of systems with redundant data center infrastructure equipment, such as multiple environmental units or pumps. When the controller detects an alarm in an operating device, a standby device is enabled and the device in alarm is either disabled or left operating as configured.

Manufacturer Name: Vertiv Co. (12)
Location: Columbus, Ohio, United States
Description: Critical Power Solutions, Thermal Management, Monitoring and Control Software
Link to Website: http://www.vertivco.com
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