DIN Rail 8 Output Expander


The Protege DIN Rail 8 Output Expander provides the control of 8 high current Form C relay outputs to the Protege system, an advanced technology security product providing seamless and powerful integration of access, security and building automation. The Output Expander provides extensive hardware advancements that allow flexible and structured control of lighting and HVAC systems and is designed for use with industry standard DIN Rail mounting.

Key Features:

Power Supply

Device power is supplied from a 12VDC input. Ultra low current requirements ensure cost effective power distribution.

Connectivity and System Expansion

Expanding the Protege System with outputs from the Protege DIN Rail 8 Output Expander allows convenient cost effective expansion and added benefit of:

  • 8 multiple function outputs for use in any programmable output entry
  • Ideal for connection in an electrical switch room to control signage, lighting and building automation
  • Address configuration is achieved using the address programming feature of the Protege System Controller
  • Outputs can be configured to automatically turn on or resume their previous state when powered up or during a communication failure


Single RS-485 communication interface port used for all network communication functions and interconnects to other modules.

Upgradable Firmware

Utilizing the latest flash technology and high performance communication mediums, the firmware can be updated via the Protege interface.

Ordering Code PRT-PX8-DIN
Power Supply
DC Input Voltage 11-14VDC
DC Output Voltage (DC IN Pass-Through) 10.83-14.0VDC 0.7A (typical) electronic shutdown at 1.1A
Operating Current 80mA (typical)
Total Combined Current* 3.25A (max)
Low Voltage Cutout 8.7VDC
Low Voltage Restore 10.5VDC
RS-485 Module Network
PGM Outputs 8 Form C relays - 7A N.O./N.C. at 30 VAC/DC resistive/inductive
Dimensions (L x W x H) 156.8 x 90 x 60mm (6.17 x 3.54 x 2.36")
Net Weight 340g (12oz)
Gross Weight 410g (14.5oz)
Operating Conditions
Operating Temperature UL/ULC 0° to 49°C (32° to 120°F) : EU EN -10° to 55°C (14° to 131°F)
Storage Temperature -10°- 85°C (14° - 185°F)
Humidity 0%-93% non condensing, indoor use only (relative humidity)
Mean Time Between Failures (MTBF) 587,177 hours (calculated using RFD 2000 (UTE C 80-810) Standard)

* The Total Combined Current refers to the current that will be drawn from the external power supply to supply the expander and any devices connected to its outputs. The Auxiliary outputs are directly connected via thermal resettable fuses to the N+ N- input terminals, and the maximum current is governed by the trip level of these fuses.

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