Description
The Simplex 2081-9044 Overvoltage Protector is a circuit protection device designed to protect low-voltage fire alarm system wiring from electrical transients caused by lightning strikes or disturbances on nearby power lines. The module provides multiple stages of surge protection to reduce transient energy to levels that connected fire alarm equipment can safely withstand.
The device is commonly installed at the points where fire alarm circuits enter or leave a building. By placing the protector near the building entry point, it minimizes the risk of surge energy traveling along external wiring and damaging control panels or connected devices.
The compact unit is epoxy encapsulated for durability and is designed for installation inside a dedicated metallic electrical box. It supports protection of several circuit types used in fire alarm systems including power circuits, data communications lines, and city circuit connections.
The protector provides line-to-line and line-to-earth surge suppression and is rated for a continuous current of up to 200 mA. It is compatible with several Simplex fire alarm control panel series and associated communication circuits including IDNet, RUI communications, and MAPNET II signaling lines.

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