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SCR490D - SSAC Obstruction Lamp Alarm 120VAC Relay
SCR490D - SSAC
SCR490D
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Price: $208.03
Returnable: NOT RETURNABLE
Manufacturer SKU: SCR490D
(Minimum order):  10



Availability: Usually Ships in 3 to 5 Days
Part Number: SCR490D
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Description
 
*** The Minimum Order Quantity of this Part is 10.

SCR490D - SSAC Obstruction Lamp Alarm 120VAC Relay

The SCR490D Family

The SCR490D Series is used to provide remote monitoring of steady burning incandescent marker and obstruction lighting. Four onboard switches allow operator programming for lighting systems with two through nine lamps on a single AC circuit. The SCR490D uses a toroidal sensor and electronic circuitry to sense the failure of one or more lamps.

Operation
When a lamp fails, the SCR490D senses a decrease in current flow. Then, after a fixed time delay, it transfers to its alarm mode. In alarm mode, the LED indicator, the output relay (SPDT isolated contacts), and a non-isolated solid-state output are energized. Replacement of the failed lamps resets the alarm outputs and the LED indicator. To prevent false alarm signals, power must be applied to the SCR490D at the same time that lamps are energized.

Features:

  • Senses failed obstruction lamps
  • 2 - 9 steadily burning lamps can be monitored
  • Toroidal current sensing
  • Isolated, 10A, SPDT alarm output contacts
  • 1A, solid-state line voltage alarm output
  • 6 second trip delay prevents nuisance alarms
pdfDownload the The SSAC Product Line catalog in *.pdf format
pdfDownload the The SCR490D Datasheet datasheet in *.pdf format