Apollo XP95 Switch Monitor (55000-843)


This product has been superseded by another model

Apollo XP95 Switch Monitor

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.

Technical Specification

  • 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


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