SURGE-RS485 – Surge suppression for RS485 communications

SURGE-RS485 – Surge suppression for RS485 communications

Description

Fire Detection, Control Panels and System Accessories

Surge protection is required to reduce the risk of potential high voltage spikes on power and communication lines from permanently damaging the equipment connected to it.
Lightning is a predominant cause of high voltage surges; however power line disturbances and load switching can also cause such surges. Whilst Notifier equipment contains some surge protection, it cannot absorb as much energy as a stand alone surge protector. Because a fire panel interfaces to a large volume of various devices which are located over a wide area, the loops and zone cables are particular exposed to voltage surges.

Every connection from a panel makes the system vulnerable to an energy spike through each connection.

Additional information

Models

SMX+650-1L-PS5, SMX+900-1L-PS5, SMX+900-1L-PS11, SMX+650-1L-PS11GL, SMX+12U1LPS11, SMX+28U1LPS11, SMX+40U1LPS11, SMX+40U1LPS11, LCM-320, LEM-320

Specifications

Specification Value
Product Model IN-485 RS485 Protection (Two Channel)
Maximum Working Voltage 36VDC
Maximum Working Current 2A
Peak Surge Handling Per Mode (8/20µs) 20kA
Clamping Voltage 36VDC
Let Through Voltage for 5kV 10/700µs Pulse 41V