THORN SECURITY IXA-500 CONTACT MONITOR MODULE 502CMA

Description:

The Thorn Security IXA-500 Contact Monitor Module 502CMA is used in addressable fire alarm control systems to supervise and monitor dry contact initiating devices and report their status to the fire alarm control panel. Commonly installed in Thorn Security and Autocall TFX fire alarm systems with manual pull stations, waterflow switches, supervisory switches, heat detectors, and other contact-initiated devices in commercial and industrial facilities. Fire alarm technicians and system integrators use this contact monitor module for new system installations, preventive maintenance, fire alarm upgrades, and replacement of failed addressable monitoring modules.

Applications:

The Thorn Security IXA-500contact monitor module 502CMA provides a supervised initiating device circuit capable of monitoring normally open or normally closed dry contacts while continuously reporting device and wiring status to compatible addressable fire alarm control panels. It is widely used in commercial buildings, hospitals, schools, airports, industrial plants, warehouses, and other life safety installations requiring reliable monitoring of initiating devices within addressable fire detection systems. 

Technical Specifications:

• Brand: Thorn Security / Autocall
• Model: IXA-500 / 502CMA
• Product Type: Addressable Contact Monitor Module
• Assembly Number (IXA-500CMA): 976092
• Assembly Number (IXA-502CMA): 976185
• PCB Number (IXA-500CMA): 940575
• PCB Number (IXA-502CMA): 940581
• Function: Dry Contact Monitoring Module
• Operating Voltage: 28 VDC Addressable Loop
• Contact Type: Normally Open or Normally Closed
• Initiating Circuit Styles: NFPA Style B, C, D, or E
• Standby Current: 0.18 mA
• Alarm Current: 0.18 mA
• Maximum Wiring Resistance: 10 Ω
• Operating Temperature: 32°F to 120°F (0°C to 49°C)
• Operating Humidity: Up to 85% Non-Condensing
• Mounting: Standard 2-Gang Electrical Box (IXA-500CMA) or Motherboard Plug-In (IXA-502CMA)
• Application: Addressable Fire Alarm Systems

Common Replacements:

• Thorn Security IXA-500CM 976027
• Thorn Security IXA-501CM 976081
• Thorn Security IXA-500DMA 976093