How to determine what fuse size to use on the ERD97P21-U.


New installation, not sure what fuse size to use.

Product Line

Pelco Cameras, Pelco Video Management


  • ERD97P21-U


Unfamiliar with ERD92P21-U.


Voltage and Fusing Options:

  1. The ERD97P21-U Receiver can be configure at 24 VAC, 120 VAC, or 230 VAC. Seven plug-in
  2. connectors and none  fuses are included with the ERD97P21-U Receiver. Install the proper
  3. voltage cubes and fuses.

  4. Determine the full-load wattage requirements of the enclosure.
  5. Devide the enclosure wattage determined in step1 by the input voltage to the receiver.
  6. Select a fuse value that is close to, but not less than the value of the determined in step 2.

Exanple:An enviromental enclosure with 120 VAC input, heater, defroster and windows wiper.

From the enclosure specifications:
Heater .................. .160 watts
Defroster ............... 15 watts
Windows wiper .... 90 watts
Total wattage ........ 265 watts

265/120 VAC = 2.208 Amps

Therefore, a 3A fuse will work for this sample enclosure.

Related Articles:

ERD97P21-U Camera output Power.
ERD97P21-U voltage selection jumper part numbers.