Siemens PAD-4-ENCL


Enclosure for PAD-4

Availability: Estimated 6 Weeks

Condition: New
Brand: Siemens
Status: Active
SKU: 72191
Manufacturer Part #: PAD-4-ENCL
Secondary Part #: 500-050081


Used with Siemens − Fire Safety fire alarm control panels (FACPs), the Distributed Power Supply PAD-4 Unit is a NAC expander with a built-in, auxiliary-power output. Each PAD-4 unit distributes additional power in buildings for audible and visual indicators that conform to the Americans with Disabilities Act (ADA).

Additional information

Weight 11 lbs
Dimensions 13.50 × 18.75 × 3.25 in

Siemens Industry, Inc.




Unit of Measurement

EA (Each)

Production Status



  • Four (4) ‘Class B’, power-limited notification appliance circuits (NACs)
  • `Class A’, field-selectable wiring
    • Each unit can support an optional module (Model PAD-4-CLSA) that converts two (2) built-in ‘Class A’ NACs into four (4) ‘Class A’ NACs
  • Up to 3 Amps of auxiliary-power output
  • Optional built-in strobe synchronization
    • Supports coded audible signals, including Temporal 3, Temporal 4 patterns
  • Battery supervision and control
  • ‘Form C’ general Trouble / AC Fail monitoring contact
  • Power supplies support NAC power
    • Up to 6A used with Model FP2011-U1
    • Up to 9A used with Model FP2012-U1
  • 24VDC output voltage
  • Ground-fault detection
  • Advanced microprocessor control
  • Uses Flash memory-based system firmware
    • Optional system-diagnostic and firmware-upgrade tool


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