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Apollo XP95 Switch Monitor

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SKU: 55000-843 Category: Tag: Brand:


The XP95 Switch Monitor with Isolator is designed to monitor the state of one or more single pole, volt-free contacts connected on a single pair of cables and to report the status to Apollo compatible control equipment. The Switch Monitor has four input states, ‘normal’, ‘fault’, ‘pre-alarm’, and ‘alarm’. The product has two visable LED’s and is Loop Powered.

Key Features

The Switch Monitor provides four input states to the control equipment: “Normal” “Fault” “Pre-alarm”and “Alarm”. These are derived from the switched resistive values. The Switch Monitor has a red LED to indicate an alarm and two yellow LEDs to indicate a switch input wiring fault or a loop short-circuit wiring fault. The Switch Monitor is fitted with a bi-directional short- circuit isolator and will be unaffected by a single short- circuit on either loop input or output.


  • Loop Operating Voltage : 17V DC
  • Maximum Loop Operating Voltage : 28V DC

Maximum Current Consumption @ 24V

  • Switch On Surge, Max 150ms : 3.5mA
  • Quiescent, 20ohms EOL Fitted : 1.25mA
  • LED Off, Switch Input Closed : 1.5mA
  • LED On, Switch Input Closed : 3.5mA
  • LED On, Switch Input S/C : 3.6mA
  • Maximum Continuous Current : 1A
  • Maximum Switch Current : 3A
  • On Resistance : 0.2ohms
  • Switch Input Monitoring Voltage : 9-11V DC
  • Maximum Cable Resistance : 50ohms
  • Operating Tempurature : -20 to +70 Degrees Celcius
  • IP Rating : 54


Additional information

Weight 0.2 kg