2081-9044 SIMPLEX


Availability: In stock SKU: 2081-9044
Trust Guard Security Scanned



2081-9044 Simplex, Electrical transients caused by lightning or by disturbances on high voltage power lines can cause damage to low voltage fire alarm circuits. Proper application of 2081-9044 Overvoltage Protectors can minimize the energy from those electrical transients to a level that can be safely handled by the circuits requiring protection. This protection is most effective when placed at the locations where the circuits leave and enter buildings. The 2081-9044 Overvoltage Protector provides multiple stages of protection against electrical transients. The small package size allows it to be easily mounted at the location that achieves maximum protection.

Designed specifically for protection of fire alarm circuits including:

  • DC power (200 mA maximum).
  • Data communications.
  • Local energy city circuit connections.
  • Rugged epoxy encapsulated package.

Multiple stages of protection include:

  • Line-to-Line protection and Line-to-Earth protection.

Listings Reference:

  • Listed as an Overvoltage Protector to UL 864, Control Units and Accessories for Fire Alarm Systems.
  • Listed as an Overvoltage Protector to ULC-S527, Control Units for Fire Alarm Systems.
  • Listed as an Isolated Loop Circuit Protector toUL 497B, Protectors for Data Communications and Fire Alarm Circuits.
  • Compatible with the requirements of the National Electrical Code (NFPA 70).

External Wiring Requirements.

Fire alarm system wiring that is run external to the building and is protected by 2081-9044 Overvoltage Protectors shall be installed in accordance with the individual system component’s installation instructions including properly grounded, twisted and shielded wire pairs, and observance of the following precautions.

Location. To ensure optimized protection, the 2081-9044 Overvoltage Protector shall be located as close as possible to the point at which the circuits leave or enter the buildings and installed in dedicated metallic electrical boxes.

Wiring distance is limited to one contiguous property. The total maximum wire length is determined by the individual application’s allowable limit as specified with overvoltage protectors, but must not exceed 3270 ft (1 km).

The grounding conductor shall be 12 AWG with a maximum length of 28 ft (8.5 m), run in as straight a line as possible and connected to the building grounding electrode system per NFPA 70, the National Electrical Code

Datasheet 2081-9044.

See all our parts for Simplex.



Additional information

Weight 2 lbs
Dimensions 5 × 5 × 5 in
Product Brand




Product Category


You've just added this product to the cart: