IZ-1 prot.R3

IZ-1 prot.R3
IZ-1 prot.R3
The IZ-1 prot.R3 loop insulator is used within the RS-R3 addressable communication lines of the Rubezh-2OP prot.R3, Rubezh-KAU1 prot.R3, and Rubezh-KAU2 prot.R3 receiving and control panels built into the RUBEZH fire alarm and fire extinguishing system. The loop insulator is designed to insulate the short-circuited sections of the addressable communication line thus ensuring functioning of the communication line rest part. When the short circuit is reset, the loop insulator automatically restores functioning of the addressable communication line (ACL).

The IZ-1 prot.R3 loop insulator is designed for an addressable communication line part disconnection in case of a short circuit.

The IZ-1 prot.R3 loop insulator is the addressable device and takes one address in the ACL.

To provide the connection with the addressable communication line, two double contact terminal blocks ALS1 and ALS2 are available on the board. ALS1 and ALS2 terminals have an equal priority in connection with ACL.


The following is available at the loop circuit insulator board:

  •  ALS1 and ALS2 terminals are double contact terminal blocks of equal priority in connection with ACL;
  • state indicator;
  • TEST/tamper button

Protected section of the loop starts near the insulator and ends near the next insulator or the last device within the loop or branch.


 Loop circuit insulator state      Indication
     Standby      Flashing once per (4-5) seconds
     ACL short circuit      Fast flashing (twice a second)
     Test      Rapid flashing for (2-3) s when 
TEST button is pressed
     No power supply      Off





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