Siemens 7TU9915-4EA1/BB

The Siemens 7TU9915-4EA1/BB is an over/undervoltage relay designed to monitor AC voltage levels with precision. This device includes an integrated timer function and features a 3-element configuration with a 3V hysteresis to ensure reliable switching performance. It operates on an auxiliary supply voltage of 220V and is built as two plug-in modules housed within an external 7XP20 case. The voltage setting range for AC applications spans from 5 to 133 volts, making it suitable for a variety of monitoring tasks. This relay is available through BSP Automation, providing a dependable option for voltage protection in industrial systems.
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